CA1279609C - Pin-shaped device for releasing a flowable medium - Google Patents
Pin-shaped device for releasing a flowable mediumInfo
- Publication number
- CA1279609C CA1279609C CA000545602A CA545602A CA1279609C CA 1279609 C CA1279609 C CA 1279609C CA 000545602 A CA000545602 A CA 000545602A CA 545602 A CA545602 A CA 545602A CA 1279609 C CA1279609 C CA 1279609C
- Authority
- CA
- Canada
- Prior art keywords
- dosing
- piston
- piston rod
- pin
- bush
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
- A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
- A46B11/002—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs pressurised at moment of use manually or by powered means
- A46B11/0058—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs pressurised at moment of use manually or by powered means with a metered dosage
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
- A45D40/26—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball
- A45D40/262—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball using a brush or the like
- A45D40/264—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball using a brush or the like movable within the container
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
- A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
- A46B11/0013—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs dispensing by gravity or by shaking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K5/00—Pens with ink reservoirs in holders, e.g. fountain-pens
- B43K5/18—Arrangements for feeding the ink to the nibs
- B43K5/1818—Mechanical feeding means, e.g. valves; Pumps
- B43K5/189—Pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating Apparatus (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Pens And Brushes (AREA)
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A pin-shaped device for releasing a flowable medium, comprises a housing having front and rear ends and an axis, a brush-like application element arranged to extend through the front end of the housing and displaceable in a an axial direction, a piston rod arranged to displace the application element, the housing having an intermediate wall provided with a guiding opening, the piston rod being axially movable in the guiding opening, a pressure spring acting upon the piston rod so that the piston rod is movable in the guiding opening under the action of the pressure spring, a dosing piston being in communication with the application element, a control piston, the control piston and the application element being fixedly connected with the piston rod, while the dosing piston being axially movable relative to the piston rod, a supply chamber and a dosing chamber formed in the housing and connected with one another, the dosing chamber being alternatingly closable during the movement of the piston rod at axially opposite ends, and a sealing ring and a sealing cylinder arranged so the control piston abuts at one end of said dosing chamber against the sealing ring, while the dosing piston abuts at an opposite end of the dosing chamber against the sealing cylinder.
A pin-shaped device for releasing a flowable medium, comprises a housing having front and rear ends and an axis, a brush-like application element arranged to extend through the front end of the housing and displaceable in a an axial direction, a piston rod arranged to displace the application element, the housing having an intermediate wall provided with a guiding opening, the piston rod being axially movable in the guiding opening, a pressure spring acting upon the piston rod so that the piston rod is movable in the guiding opening under the action of the pressure spring, a dosing piston being in communication with the application element, a control piston, the control piston and the application element being fixedly connected with the piston rod, while the dosing piston being axially movable relative to the piston rod, a supply chamber and a dosing chamber formed in the housing and connected with one another, the dosing chamber being alternatingly closable during the movement of the piston rod at axially opposite ends, and a sealing ring and a sealing cylinder arranged so the control piston abuts at one end of said dosing chamber against the sealing ring, while the dosing piston abuts at an opposite end of the dosing chamber against the sealing cylinder.
Description
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1~7~
The present invention relates to a ?in-shaped device for releasing a flowable medium from ~ supply cortainer wit~. a brush-like application element. More oarticularly, it relates to such a device in which the application elemen.t is displacea~le through a closable opening of a front of the device by means of a pistor. rod acting against a spring force anà communicating with a dosing piston in a chamber provided at the end side of the supply container.
The application elemen~ in form of a brush or another conventional fiber writing tip must be supDlied during each actu-ation of the device with a predetermined quantity of a flowable medium. It must be guaranteed th.at the flowable medium cannot be dried in the supply chamber and in the dosing chamber. Fast ~5 drying with the removed clos~ng cap in the supply opening into which the application element is withdrawn must be prevented.
~ The U.S. Patent 3,14~,676 discloses a pin-shaped device for applying liquids by means of a brush. The liquid is supplied from a supply chamber via a dosina chamber or the like to the brush. Since in this device no actuating element is provided, the brush is moved from the dosing chamber only with the tip facing upwardly, under the action of the force of gravity. In this position the dosing chamber is not closed, so that during the operation or when the device is left open with projecting brush, drying in the dosing chamber can take place.
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1i~7~
1 For applying flowable cosmetics substances, a further device is disclosed in the Japanese document number CH0 60-8803, Figures 2 and 3 of this document show a oin-shaped device in which the application element is connected with a throughgoing piston rod. The piston rod can be a~.ially aisolaceable at the rear end of the pin by rotation. The application pin contains also a supply chamber and a dosing chamber. During the forward movement of the piston rod a throughopening from the supply chamber to the dosing cha~ber is released for filling the dosing chamber with liquid. Moreover, during the forward movement of the piston rod a dosing piston or the like is actuated, which supplies a suction pad or a sponge arranged in the suooly opening with the liquid. From this sponge the liquid is transferred to the application element.
This device has the disadvantage that in the inoperative position the dosing chamber is not closed from air entrance. There is, therefore, the danger that the liauid can be dried in the dosing chamber, ~"
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1~7~
Accordingly, it is an. object of the present invention to provide a pin-shaped device for releasing a flowable medium which avoids the disadvantages of the ~rioY art.
More particularly, it is an object of the present inven-tion to provide a device for reieasing a flowable medil~m from a container in which the function of dosing is guaranteed and in which the medium cannot be dried in the supply chalnber and dosing chamber with reliability. Moreover, the application element can be protected from drying as well.
In keeping with these objects and with others which will become apparent hereinafter, one feature of the present invention resides, briefly stated, in that the device is provided with a control piston which ls fiY~edly connected with a throughgoing piston rod which carries also the aDplication element, and also provided with a movable dosing piston on the DiSton rod. It is, therefore guaranteed, that both the supply chamber and the dos.~ng chamber are always sealed from the outer air.
Y/~r, The supply chamber is sealed from the piston rod by means of a sealing ring and the chamber is sealed by means of a further sealing ring relative to the control piston, so that the sealing action is increased. An additional sealing of the supply chamber from the outer air is achieved by a construction in which the dosing piston abuts against an outer surface of the control pis-ton by means of an inner cone and carries on its outer periphery a 1~79~
I seallng element which is complementary to a sealing cylinder. The dosing chamber is thereby sealed relative to the piston rod in the inoperative position.
In accordance with a further advantageous embodiment of S the invention, the dosed quantitv of the flowable medium is exactly determined and changed in a simple manner exclusively by change of the control piston, in correspondence with the proper-ties of the flowable medium. This is achieved when the axial path of the piston rod is greater than the length of the control piston and greater than the axial path of the dosing piston, while the length of the control piston and the a.Yial path of the dosing piston are different.
For adding air to the volume of the discharge medium in the s~pply chamber, a valve is provided which allows a pressure and volume equalization of the pressure differences between the outer atmosphere and the interior of the supplv cham~er. It is advantageous to provide a conical ring-shaped groove in the inter-mediate wall which closes the supply chamber from behind, such that ~he ring-shaped groove narrows toward rear end of the housing and carries a ring-shaped seal. The ring-shaped seal abuts against the piston rod and the ring-shaped groove is formed wider than the ring-shaped seal in the direction of the conical region.
A positive sealing of the supply chamber from outside can be achieved in an advantageous manner when the dosing piston has a supporting pipe which in the initial position of the piston ~;~7~
I rod abuts against the ring sealing under the action of the pres- sure spring. The force of the return spring of the piston rod is used so that in the inoperative position the dosing chamber is sealed.
In accordance with a further advantageous feature of the invention, the supply chamber is sealed by a diaphragm valve rela-tive to the piston rod. It is mounted in a throughflow bush by means of a valve bush in an outer diameter portion, and abuts in the initial position of the piston rod against the supporting pipe with an inner diameter portion. The diaphragm valve has the advantage that it easily reacts to pressure differences.
The sealing on the dosing piston can be improved in an advantageous manner without changing the principle of the device, when a seallng is used to seal the inner and outer diameter. In an advantageous manner, a further diaphragm~ e sealing element is mounted between the dosing piston and the supporting pipe. Its inner diameter portion abuts against the piston rod and its outer diameter portion abuts against the sealing cylinder.
The inventive device can be adjusted ln a simple manner to different viscosities of the media to be used, when the connec-tion between the supply chamber and the dosing chamber is per-formed through a throughflow bush which is supported by means of a ring-shaped flange and an intermediate bush in the housing and provided with one or several overflow surfaces. The outer dimen-sions of the throughflow bush can be retained unchanged, so that .. ..
1~79~jO'3 I the automatically mounted device can remain ~he same with respect to the number and dimensions of the used parts. At the same time, by the change of one individual part, it can be adjusted to the properties of the flowable medium.
~I r '' For preventing advancement of a medium in a hori~ontal position of the device when the supply chamber is only partially filled, capillary channels can advantageously be provided and formed as an intermediate storage. An advantageous embodiment of this intermediate storage is achieved when the communication from the supply to the dosing chamber is performed through a through-flow bush which is supported by means of a ring-shaped flange and an intermediate bush in the housing and which has one or several overflow passages.
In order to enable filling the device with different lS media, the changes must be made only in the dosing piston and the throughflow bush. In an advantageous manner, a premounted struc-tural unit can be provided which contains changeable parts, while the r~m"aining parts of the device remain the same. In accordance with a further embodiment of the invention, a structural group is formed so that the intermediate bush serves for supporting the front part, the cylinder bush and the throughflow bush and is inserted,in the housing.
An especially simple dosing is achieved when it is performed not only by friction, but also under the action of a predetermined force. The dosing force can be adjusted accurately lX79~
1 when, in accordance with a further embodiment of the inventlon, a dosing sprlng acts with its end upon the dosing piston, extends through the throughflow bush, and is supported with its opposite end against a housing-fixed supportina wall For avoiding actuation of the dèvice and dosing of a flowable medium with fitted closure ca~, another advantageous embodiment of the device providès that the piston rod is mounted in a guided piston which is displaceable along an inner wall of the housing and has a coupling piece for receiving a closure cap.
The device can be actuated only after plugging of the closurè cap.
A further advantage is obtained for the user when the closing cap can be placed on the rear end of the device and not lost. Simul-taneously, also an improvèd guidance of the piston rod is achieved when it is supported in the guiding piston.
For facilitating the operation by the user, an arresting device is provided which is known in the ball-type writing instru-ments for adjusting the writing lead. With the above arresting device, the application element, similarly to a ball writing lead, can be extended from the housing and locked in this position. The above arresting device can be designed in a very simple manner when it includes an arresting element displaceable transversely to the movement direction of the piston rod under the action of a spring in a cutout and fixable by a releasing pin.
In accordance with a further embodiment of the inven-tion, an abutment disk is mounted fixedly on the piston rod and 1~7~
I abuts wlth its one side under the action of the vressure spring against the intermediate wall of the housing, while at its ?P-site side lt abuts against the dosing spring which in turn presses with its another end against a sup?orting ring connec~ed with a sealing element and a dosing piston. In this manner it is possi-ble to retain very low the spring force of the dosing spring and particularly its pretensioning in the initial position. The dosing spring is pretensioned during the movement of the piston rod, until it is in the position to move the dosing piston. This provides the advantage that a small spring force is obtained for the pressure spring as well, which brings the p~ston rod to the initial position. The device is easy to handle ~ith these struc-tural features.
When the abutment dis~ is designed so that it has seve-'5 ral openings extending parallel to its center axis, a further advantage is provided. The flowing medium in the supply container is pressed during movement of the piston rod through the openings and c~anges the viscosity of the medium with the use of the thi~o-tropie effect.
The novel features which are considered as character-istic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connec-tion with the accompanying drawing.
1~7~ 3 Figure 1 is a view showing a longitudinal section of a device for releasing a flowable medium in accordance with the present invention, with a withdra~/n applicatior. element:
S Figure 2 is a view showing the device of Figure 1 with the application element in the position of use;
Figure 3 is a longitudinal section showing the device during the beginning of a dosing ~rocess;
~!rb Figure 4 is a perspective view of a throughflow bush of the device in accordance with the present invention;
Figure 5 is a perspective view showing the throughflow bush of the inventive device in accordance with another embodiment of the invention;
Figure 6 is a view showing a longitudinal section of the lS device for releasing a flowable medium of a further embodiment, with a withdrawn application element;
Figure ? ~s a view showing the device of Figure 6 with the outwardly projecting application element;
Figure 8 ls a view showing the device for releasing a flowable medium in accordance with still a further embodiment of the invention in an initial position and in the region of the dosing chamber: and Figure 9 is a view showing the device of Figure 8 in the working position of its application element.
~;~7~6()~3 A device for releasing and applying a flowable medium shown in Figure 1 includes a housing 1 which has an interme~iate wall 2 with a flange 3 formed on the latter. The flange 3 is provided with a conical annular groove 4 and a ring-shaped spring-receiving depression 5. The intermediate wall 2 has a guiding opening 6, and also a longitudinal groove 7 provided in the rear region of the housing 1 and ending in a cutout 8.
As shown in the drawing, the housing 1 is closed by a collar bush 9 which is pressed and glued to the housing. The collar bush 9 serves for mounting an annular clip lo which carries at its springy clip leg a releasing pin 11, The housing 1 has a chamber which is located above the intermediate wall 2 and accom-modates a guiding piston 12 which is provided with a coupling piece 13 having a slot 14. The guiding piston 12 has a transverse opening for an arresting element 16 which abuts against a spring 1~. The guiding pin 12 also has a blind hole lB for mounting an end of a piston rod 19.
~ The piston l9`has a length which approximately corre-sponds to the length of the housing 1 and carries in its front region a th.ickened portion formed as a control piston 20, which is connected with the piston rod 19 b,v an outer cone 21. The piston 19 carries at its free end an application element 22. The appli-cation element 22 preferably is formed as a brush. However, it can also be formed as a fiber tip which can be used as known 1~79~
1 paintlng tlps, The housing 1 is closed at its front end by a closin~ cap 23 which is connected with the housing by a thread 24 and abuts against a part of the housing I with its sealing wall 25. The S piston 19 is held in its end position by a pressure spring 26 which urges the guiding piston ~2 toward abutment against the collar bush 9.
An intermediate bush 27 is mounted on the front end of the housing 1. It has an outwardl~ extended cran~-shaped flange 28 and a further ring-shaped flange 2g e.Ytending inwardly. A
front part 30 is inserted into the above intermediate bush 2?. A
supply opening 31 is provided in the front part 30 and extends rearwardly so as to form a ring-shaped recess 3 . This recess 32 accommodates a sealing ring 33 which abuts against the control piston 20 in the inoperative position.
A dosing piston 34 is arranged axially immovably on the piston rod 19 in an opening 36. The dosing piston 34 carries on its outer periphery a sealing element 35. It is also provided at its front end with an inner cone 3? which is complementary to the ou~er cone 21 of the control piston 20. The dosing piston 34 is located inside a cylinder bush 38 which has a throughflow cylinder 39 and a sealing cylinder 40 connected with one another by a running incline 42. Furthermore, the cylinder bush 38 has at its end side a supporting flange 41 which can be brought to abutment against the dosing piston 34.
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A throughflow bush 43 is arranged in the lnner ring-shaped flange 29 of the intermediate bush 2~. The throughflow openings are formed by overflow surfaces 45 as shown more clearly in Figure 4. The throughflow bush 43 is guided at its opposite end on the flange 3 of the intermediate wall 2. For this purpose it is provided with a supporting wall 4~ which closes the conical ring-shaped groove 4 and encloses a ring-shaped sealing 48.
A further embodiment of a throughflow bush 50 is shown in Figure 5. Here, it has a preformed flange 51 which is inter-lo rupted by overflow passages 52. The overflow passages 52 have the advantage that they adjust the flowing medium in an especially satisfactory manner so as to form at this location an intermediate accumulator of a kind in which a certain quantity of the medium to be applied is held to be aspirated from there.
I Figures 6 and 7 show a further embodiment of the device in¦accordance with the present invention. It substantially corre-sponds to the device shown in Figure 1, but has a different dosing pi~ton 53. A sealing element 54 is arranged in the dosing piston 53 and held by a supporting bush 55. At the rear end of the housing 1 the supporting bush 55 is e.vtended in form of a sup-por~ting pipe 56. A diaphragm valve 57 is pressed under the action of a pressure spring 26 by means of the piston rod 19 against the throughflow bush 50. The diaphragm valve 57 is fixed on its outer diameter by means of a valve bush 58 which has a supporting flange 59 and is pressed in the throughflow bush 50.
Y~ 'b 1;~7~0~
In condition of use of the device, a stlpply chamber 60 ls completely filled with the flowir.~ medium to be released, A
dosing chamber 61 is provided at the discharge end of the device inside the cylinder bush 38. As can be seen from Figure 6, in the initial position both the supply chamber 60 and the dosing chamber 61 are sealed from the atmosphere, In the device in accordance with the embodiment of Figures 8 and 9, an abutment dis~ 72 is seated stationarily on a piston rod ~0 and notch 71. The abutment disk 72 has a plurality of openings 73. The outer diameter of the abutment dis~ ~2 corre-sponds substantially to the inner diameter of the housing 1.
Also, a dosing piston ~4 is provided in this embodimene and con-nected with a sealing element 75 and a supporting ring ~6. A
semi-collar 77 serves for fixing a membrane valve ~8 on the inter-mediate wall 2.
The device for releasing a flowable medium in accordance with the present invention operates in the following manner:
For transporting the flowable medium which fills the supply chamber 60, to the application element 22 and moving the lat~er~to the position of use, the closing cap 23 is first unscrewed and placed onto the coupling piece 1.,. When a force is applied onto the closing cap 23 which serves as a button, the guiding plston 22 moves forwardly against the force of the spring 26. Through the piston rod 19, also the control piston 20 and the dosing piston 34 are moved axiallv. The sealing element 35 of the lg 1~79~09 1 dosing piston 34 runs on the running incline 42. The dosing piston 34 is thereby held while the piston rod 19 and the control piston 22 are moved further rorwardly. As long as the control piston 20 leaves the sealing ring ~3 the medium can be pressed from the doslng chamber 61 into the supp~y opening 31. After opening the dosing chamber 61 the dosing spring 49 is in the position such that the dosing piston :34 is moved ~n the sealing cylinder so and the medium is supplied to the supply opening 31.
The path of the dosing piston :34 is identified with reference letter H in Figure 2.
~ At the end of the forward movement of the piston rod 19 the arresting element 16 is pressed by means of the spring 17 in the cutout 8 and arrests the guiding piston 12 in its front posi-tion. In this position which is shown in Figu.re 2 the application element projects beyond the front part 30 and is in the position ready to use. The application element 23 is filled with the medium since as shown in Figures 1 2 and 3 during multi-actuation of the piston rod l9 the supply opening 31 is partially filled with the medium discharged to the apnlication element 22.
For adding air to the medium which is supplied from the supply chamber 60 the ring-shaped sealing 48 is provided. It enables an air admixture to t~e supply chamber 60. The negative pressure which is formed in the supply chamber 60 when the dosing piston 34 is moved into the sealing cylinder 40 contributes to an air exchange. The atmospheric pressure is then greater than the 1~7c~
1 pressure lnslde the supply chamber 60, so that because of the conical design of the ring-shaped groove 40 an air supply from outs~d~de inwardly can take place.
For withdrawing the piston rod 19, the releasing pin 11 is pressed into the cutout 8 and the arresting element 16 is unblocked. The piston rod 19 is brought under the action of the pressure spring 26 to its initial position. The guiding piston 12 abuts again against the collar bush '3.
In the embodiment shown in ~igu.res 6 and 7 the same ~n operation of the pin-shaped device for apDlication of a f~owable medium takes place. The advantage of this construction is that directly behind the differently designed dosing piston 53, the sealing element 54 is arranged and forlned as a diaohragm. The sealing element 54 abuts simultaneously against the sealing cylin-lS der 40 and the outer diameter of ~he piston rod 1~3. In this manner an additional sealing of the dosing chamber 61 from the atmosphere is achieved. Moreover, in the inoperative position shown in Figure 6, a forced sealing by the membrane valve 57 is provided, since the supporting pipe 56 under the action of the pressure spring 26 acts upon the second diaphragm valve 57 and cldses the same in force-transmitting manner in the inoperative position. With the introduced application element 22, a pressure equalization can be carried through the diaphragm valve 5? as long as a negative pressure takes places in the supply chamber 60. The diaphragm valve 57 can be designed so that it reacts in a very 1;~7~3~ 3 1 The device shown in ~ig~res 8 and 9 functions in princi-ple in the same manner as the above described devices. This further embodiment makes possible to reduce the forces for actua-tion of the dosing and arresting Ulli ~ and thereby to Drovide the user with a product which is especially easy to handle. The dosing spring 49 must act in this embodiment not with the help of its pretensioning upon the dosing stroke H. The spring forc~ is re~uired only for bringing the dosing piston 74 against the piston rod 70 in its initial position shown in Figure 8. During dis-placement of the piston rod ?0, the abutment disk 72 is moved and a pretensioning of the dosing spring 49 is formed until it is in the position in which the dosing piston 74, including its sealing ellment 75, is to be displaced. The device can also be designed so~that the dosing spring 49 is compressed to a ~loc~ length and only thereafter the movement of the dosing piston 74 is obtained.
Inlthe last case the dosing stroke can be brought directly by the user. The pressure SDring 26 can, therefore, be designed so that it~.has to overcome the return forces for moving the ~iston rod 70 with connected individual parts.
Also, in this embodiment the Diston rod 70 is first adtanced axially until the control piston 20 leaves the sealing 32. After this either a pretensioning of the dosing spring 49 is formed, or alternatingly the dosing spring 49 is compressed to the block length. With the sufficient Dretensioning or block length, the dosing piston 74 can be moved by a predetermined stroke.
~;~7~ 3 22386-25o2 Since during this movement the abutment disk 72 is moved into the supply chamber 60, simultaneously because o -the opening 73 the flowable medium is moved. In the event of thixotropous media, the desired change of the viscosity takes place, which leads to a favourable flow condition. The medium is moved by the dosing piston 74 into the supply opening 31, and then it is brought in communication with the application element 22 when it is withdrawn to the position shown in Figure 8.
It will be understood that each of the elements described above, or two or more together, may also find a use-ful application in other types of constructions differing from the types described above.
While the invention has been illustrated and described as embodied in a pin-shaped device for applying a flowable medium, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.
Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the stand-point of prior art fairly constitute essential characteristics of the generic or specific aspects of this invention.
1~7~
The present invention relates to a ?in-shaped device for releasing a flowable medium from ~ supply cortainer wit~. a brush-like application element. More oarticularly, it relates to such a device in which the application elemen.t is displacea~le through a closable opening of a front of the device by means of a pistor. rod acting against a spring force anà communicating with a dosing piston in a chamber provided at the end side of the supply container.
The application elemen~ in form of a brush or another conventional fiber writing tip must be supDlied during each actu-ation of the device with a predetermined quantity of a flowable medium. It must be guaranteed th.at the flowable medium cannot be dried in the supply chamber and in the dosing chamber. Fast ~5 drying with the removed clos~ng cap in the supply opening into which the application element is withdrawn must be prevented.
~ The U.S. Patent 3,14~,676 discloses a pin-shaped device for applying liquids by means of a brush. The liquid is supplied from a supply chamber via a dosina chamber or the like to the brush. Since in this device no actuating element is provided, the brush is moved from the dosing chamber only with the tip facing upwardly, under the action of the force of gravity. In this position the dosing chamber is not closed, so that during the operation or when the device is left open with projecting brush, drying in the dosing chamber can take place.
~J
1i~7~
1 For applying flowable cosmetics substances, a further device is disclosed in the Japanese document number CH0 60-8803, Figures 2 and 3 of this document show a oin-shaped device in which the application element is connected with a throughgoing piston rod. The piston rod can be a~.ially aisolaceable at the rear end of the pin by rotation. The application pin contains also a supply chamber and a dosing chamber. During the forward movement of the piston rod a throughopening from the supply chamber to the dosing cha~ber is released for filling the dosing chamber with liquid. Moreover, during the forward movement of the piston rod a dosing piston or the like is actuated, which supplies a suction pad or a sponge arranged in the suooly opening with the liquid. From this sponge the liquid is transferred to the application element.
This device has the disadvantage that in the inoperative position the dosing chamber is not closed from air entrance. There is, therefore, the danger that the liauid can be dried in the dosing chamber, ~"
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1~7~
Accordingly, it is an. object of the present invention to provide a pin-shaped device for releasing a flowable medium which avoids the disadvantages of the ~rioY art.
More particularly, it is an object of the present inven-tion to provide a device for reieasing a flowable medil~m from a container in which the function of dosing is guaranteed and in which the medium cannot be dried in the supply chalnber and dosing chamber with reliability. Moreover, the application element can be protected from drying as well.
In keeping with these objects and with others which will become apparent hereinafter, one feature of the present invention resides, briefly stated, in that the device is provided with a control piston which ls fiY~edly connected with a throughgoing piston rod which carries also the aDplication element, and also provided with a movable dosing piston on the DiSton rod. It is, therefore guaranteed, that both the supply chamber and the dos.~ng chamber are always sealed from the outer air.
Y/~r, The supply chamber is sealed from the piston rod by means of a sealing ring and the chamber is sealed by means of a further sealing ring relative to the control piston, so that the sealing action is increased. An additional sealing of the supply chamber from the outer air is achieved by a construction in which the dosing piston abuts against an outer surface of the control pis-ton by means of an inner cone and carries on its outer periphery a 1~79~
I seallng element which is complementary to a sealing cylinder. The dosing chamber is thereby sealed relative to the piston rod in the inoperative position.
In accordance with a further advantageous embodiment of S the invention, the dosed quantitv of the flowable medium is exactly determined and changed in a simple manner exclusively by change of the control piston, in correspondence with the proper-ties of the flowable medium. This is achieved when the axial path of the piston rod is greater than the length of the control piston and greater than the axial path of the dosing piston, while the length of the control piston and the a.Yial path of the dosing piston are different.
For adding air to the volume of the discharge medium in the s~pply chamber, a valve is provided which allows a pressure and volume equalization of the pressure differences between the outer atmosphere and the interior of the supplv cham~er. It is advantageous to provide a conical ring-shaped groove in the inter-mediate wall which closes the supply chamber from behind, such that ~he ring-shaped groove narrows toward rear end of the housing and carries a ring-shaped seal. The ring-shaped seal abuts against the piston rod and the ring-shaped groove is formed wider than the ring-shaped seal in the direction of the conical region.
A positive sealing of the supply chamber from outside can be achieved in an advantageous manner when the dosing piston has a supporting pipe which in the initial position of the piston ~;~7~
I rod abuts against the ring sealing under the action of the pres- sure spring. The force of the return spring of the piston rod is used so that in the inoperative position the dosing chamber is sealed.
In accordance with a further advantageous feature of the invention, the supply chamber is sealed by a diaphragm valve rela-tive to the piston rod. It is mounted in a throughflow bush by means of a valve bush in an outer diameter portion, and abuts in the initial position of the piston rod against the supporting pipe with an inner diameter portion. The diaphragm valve has the advantage that it easily reacts to pressure differences.
The sealing on the dosing piston can be improved in an advantageous manner without changing the principle of the device, when a seallng is used to seal the inner and outer diameter. In an advantageous manner, a further diaphragm~ e sealing element is mounted between the dosing piston and the supporting pipe. Its inner diameter portion abuts against the piston rod and its outer diameter portion abuts against the sealing cylinder.
The inventive device can be adjusted ln a simple manner to different viscosities of the media to be used, when the connec-tion between the supply chamber and the dosing chamber is per-formed through a throughflow bush which is supported by means of a ring-shaped flange and an intermediate bush in the housing and provided with one or several overflow surfaces. The outer dimen-sions of the throughflow bush can be retained unchanged, so that .. ..
1~79~jO'3 I the automatically mounted device can remain ~he same with respect to the number and dimensions of the used parts. At the same time, by the change of one individual part, it can be adjusted to the properties of the flowable medium.
~I r '' For preventing advancement of a medium in a hori~ontal position of the device when the supply chamber is only partially filled, capillary channels can advantageously be provided and formed as an intermediate storage. An advantageous embodiment of this intermediate storage is achieved when the communication from the supply to the dosing chamber is performed through a through-flow bush which is supported by means of a ring-shaped flange and an intermediate bush in the housing and which has one or several overflow passages.
In order to enable filling the device with different lS media, the changes must be made only in the dosing piston and the throughflow bush. In an advantageous manner, a premounted struc-tural unit can be provided which contains changeable parts, while the r~m"aining parts of the device remain the same. In accordance with a further embodiment of the invention, a structural group is formed so that the intermediate bush serves for supporting the front part, the cylinder bush and the throughflow bush and is inserted,in the housing.
An especially simple dosing is achieved when it is performed not only by friction, but also under the action of a predetermined force. The dosing force can be adjusted accurately lX79~
1 when, in accordance with a further embodiment of the inventlon, a dosing sprlng acts with its end upon the dosing piston, extends through the throughflow bush, and is supported with its opposite end against a housing-fixed supportina wall For avoiding actuation of the dèvice and dosing of a flowable medium with fitted closure ca~, another advantageous embodiment of the device providès that the piston rod is mounted in a guided piston which is displaceable along an inner wall of the housing and has a coupling piece for receiving a closure cap.
The device can be actuated only after plugging of the closurè cap.
A further advantage is obtained for the user when the closing cap can be placed on the rear end of the device and not lost. Simul-taneously, also an improvèd guidance of the piston rod is achieved when it is supported in the guiding piston.
For facilitating the operation by the user, an arresting device is provided which is known in the ball-type writing instru-ments for adjusting the writing lead. With the above arresting device, the application element, similarly to a ball writing lead, can be extended from the housing and locked in this position. The above arresting device can be designed in a very simple manner when it includes an arresting element displaceable transversely to the movement direction of the piston rod under the action of a spring in a cutout and fixable by a releasing pin.
In accordance with a further embodiment of the inven-tion, an abutment disk is mounted fixedly on the piston rod and 1~7~
I abuts wlth its one side under the action of the vressure spring against the intermediate wall of the housing, while at its ?P-site side lt abuts against the dosing spring which in turn presses with its another end against a sup?orting ring connec~ed with a sealing element and a dosing piston. In this manner it is possi-ble to retain very low the spring force of the dosing spring and particularly its pretensioning in the initial position. The dosing spring is pretensioned during the movement of the piston rod, until it is in the position to move the dosing piston. This provides the advantage that a small spring force is obtained for the pressure spring as well, which brings the p~ston rod to the initial position. The device is easy to handle ~ith these struc-tural features.
When the abutment dis~ is designed so that it has seve-'5 ral openings extending parallel to its center axis, a further advantage is provided. The flowing medium in the supply container is pressed during movement of the piston rod through the openings and c~anges the viscosity of the medium with the use of the thi~o-tropie effect.
The novel features which are considered as character-istic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connec-tion with the accompanying drawing.
1~7~ 3 Figure 1 is a view showing a longitudinal section of a device for releasing a flowable medium in accordance with the present invention, with a withdra~/n applicatior. element:
S Figure 2 is a view showing the device of Figure 1 with the application element in the position of use;
Figure 3 is a longitudinal section showing the device during the beginning of a dosing ~rocess;
~!rb Figure 4 is a perspective view of a throughflow bush of the device in accordance with the present invention;
Figure 5 is a perspective view showing the throughflow bush of the inventive device in accordance with another embodiment of the invention;
Figure 6 is a view showing a longitudinal section of the lS device for releasing a flowable medium of a further embodiment, with a withdrawn application element;
Figure ? ~s a view showing the device of Figure 6 with the outwardly projecting application element;
Figure 8 ls a view showing the device for releasing a flowable medium in accordance with still a further embodiment of the invention in an initial position and in the region of the dosing chamber: and Figure 9 is a view showing the device of Figure 8 in the working position of its application element.
~;~7~6()~3 A device for releasing and applying a flowable medium shown in Figure 1 includes a housing 1 which has an interme~iate wall 2 with a flange 3 formed on the latter. The flange 3 is provided with a conical annular groove 4 and a ring-shaped spring-receiving depression 5. The intermediate wall 2 has a guiding opening 6, and also a longitudinal groove 7 provided in the rear region of the housing 1 and ending in a cutout 8.
As shown in the drawing, the housing 1 is closed by a collar bush 9 which is pressed and glued to the housing. The collar bush 9 serves for mounting an annular clip lo which carries at its springy clip leg a releasing pin 11, The housing 1 has a chamber which is located above the intermediate wall 2 and accom-modates a guiding piston 12 which is provided with a coupling piece 13 having a slot 14. The guiding piston 12 has a transverse opening for an arresting element 16 which abuts against a spring 1~. The guiding pin 12 also has a blind hole lB for mounting an end of a piston rod 19.
~ The piston l9`has a length which approximately corre-sponds to the length of the housing 1 and carries in its front region a th.ickened portion formed as a control piston 20, which is connected with the piston rod 19 b,v an outer cone 21. The piston 19 carries at its free end an application element 22. The appli-cation element 22 preferably is formed as a brush. However, it can also be formed as a fiber tip which can be used as known 1~79~
1 paintlng tlps, The housing 1 is closed at its front end by a closin~ cap 23 which is connected with the housing by a thread 24 and abuts against a part of the housing I with its sealing wall 25. The S piston 19 is held in its end position by a pressure spring 26 which urges the guiding piston ~2 toward abutment against the collar bush 9.
An intermediate bush 27 is mounted on the front end of the housing 1. It has an outwardl~ extended cran~-shaped flange 28 and a further ring-shaped flange 2g e.Ytending inwardly. A
front part 30 is inserted into the above intermediate bush 2?. A
supply opening 31 is provided in the front part 30 and extends rearwardly so as to form a ring-shaped recess 3 . This recess 32 accommodates a sealing ring 33 which abuts against the control piston 20 in the inoperative position.
A dosing piston 34 is arranged axially immovably on the piston rod 19 in an opening 36. The dosing piston 34 carries on its outer periphery a sealing element 35. It is also provided at its front end with an inner cone 3? which is complementary to the ou~er cone 21 of the control piston 20. The dosing piston 34 is located inside a cylinder bush 38 which has a throughflow cylinder 39 and a sealing cylinder 40 connected with one another by a running incline 42. Furthermore, the cylinder bush 38 has at its end side a supporting flange 41 which can be brought to abutment against the dosing piston 34.
;
1;~7~
A throughflow bush 43 is arranged in the lnner ring-shaped flange 29 of the intermediate bush 2~. The throughflow openings are formed by overflow surfaces 45 as shown more clearly in Figure 4. The throughflow bush 43 is guided at its opposite end on the flange 3 of the intermediate wall 2. For this purpose it is provided with a supporting wall 4~ which closes the conical ring-shaped groove 4 and encloses a ring-shaped sealing 48.
A further embodiment of a throughflow bush 50 is shown in Figure 5. Here, it has a preformed flange 51 which is inter-lo rupted by overflow passages 52. The overflow passages 52 have the advantage that they adjust the flowing medium in an especially satisfactory manner so as to form at this location an intermediate accumulator of a kind in which a certain quantity of the medium to be applied is held to be aspirated from there.
I Figures 6 and 7 show a further embodiment of the device in¦accordance with the present invention. It substantially corre-sponds to the device shown in Figure 1, but has a different dosing pi~ton 53. A sealing element 54 is arranged in the dosing piston 53 and held by a supporting bush 55. At the rear end of the housing 1 the supporting bush 55 is e.vtended in form of a sup-por~ting pipe 56. A diaphragm valve 57 is pressed under the action of a pressure spring 26 by means of the piston rod 19 against the throughflow bush 50. The diaphragm valve 57 is fixed on its outer diameter by means of a valve bush 58 which has a supporting flange 59 and is pressed in the throughflow bush 50.
Y~ 'b 1;~7~0~
In condition of use of the device, a stlpply chamber 60 ls completely filled with the flowir.~ medium to be released, A
dosing chamber 61 is provided at the discharge end of the device inside the cylinder bush 38. As can be seen from Figure 6, in the initial position both the supply chamber 60 and the dosing chamber 61 are sealed from the atmosphere, In the device in accordance with the embodiment of Figures 8 and 9, an abutment dis~ 72 is seated stationarily on a piston rod ~0 and notch 71. The abutment disk 72 has a plurality of openings 73. The outer diameter of the abutment dis~ ~2 corre-sponds substantially to the inner diameter of the housing 1.
Also, a dosing piston ~4 is provided in this embodimene and con-nected with a sealing element 75 and a supporting ring ~6. A
semi-collar 77 serves for fixing a membrane valve ~8 on the inter-mediate wall 2.
The device for releasing a flowable medium in accordance with the present invention operates in the following manner:
For transporting the flowable medium which fills the supply chamber 60, to the application element 22 and moving the lat~er~to the position of use, the closing cap 23 is first unscrewed and placed onto the coupling piece 1.,. When a force is applied onto the closing cap 23 which serves as a button, the guiding plston 22 moves forwardly against the force of the spring 26. Through the piston rod 19, also the control piston 20 and the dosing piston 34 are moved axiallv. The sealing element 35 of the lg 1~79~09 1 dosing piston 34 runs on the running incline 42. The dosing piston 34 is thereby held while the piston rod 19 and the control piston 22 are moved further rorwardly. As long as the control piston 20 leaves the sealing ring ~3 the medium can be pressed from the doslng chamber 61 into the supp~y opening 31. After opening the dosing chamber 61 the dosing spring 49 is in the position such that the dosing piston :34 is moved ~n the sealing cylinder so and the medium is supplied to the supply opening 31.
The path of the dosing piston :34 is identified with reference letter H in Figure 2.
~ At the end of the forward movement of the piston rod 19 the arresting element 16 is pressed by means of the spring 17 in the cutout 8 and arrests the guiding piston 12 in its front posi-tion. In this position which is shown in Figu.re 2 the application element projects beyond the front part 30 and is in the position ready to use. The application element 23 is filled with the medium since as shown in Figures 1 2 and 3 during multi-actuation of the piston rod l9 the supply opening 31 is partially filled with the medium discharged to the apnlication element 22.
For adding air to the medium which is supplied from the supply chamber 60 the ring-shaped sealing 48 is provided. It enables an air admixture to t~e supply chamber 60. The negative pressure which is formed in the supply chamber 60 when the dosing piston 34 is moved into the sealing cylinder 40 contributes to an air exchange. The atmospheric pressure is then greater than the 1~7c~
1 pressure lnslde the supply chamber 60, so that because of the conical design of the ring-shaped groove 40 an air supply from outs~d~de inwardly can take place.
For withdrawing the piston rod 19, the releasing pin 11 is pressed into the cutout 8 and the arresting element 16 is unblocked. The piston rod 19 is brought under the action of the pressure spring 26 to its initial position. The guiding piston 12 abuts again against the collar bush '3.
In the embodiment shown in ~igu.res 6 and 7 the same ~n operation of the pin-shaped device for apDlication of a f~owable medium takes place. The advantage of this construction is that directly behind the differently designed dosing piston 53, the sealing element 54 is arranged and forlned as a diaohragm. The sealing element 54 abuts simultaneously against the sealing cylin-lS der 40 and the outer diameter of ~he piston rod 1~3. In this manner an additional sealing of the dosing chamber 61 from the atmosphere is achieved. Moreover, in the inoperative position shown in Figure 6, a forced sealing by the membrane valve 57 is provided, since the supporting pipe 56 under the action of the pressure spring 26 acts upon the second diaphragm valve 57 and cldses the same in force-transmitting manner in the inoperative position. With the introduced application element 22, a pressure equalization can be carried through the diaphragm valve 5? as long as a negative pressure takes places in the supply chamber 60. The diaphragm valve 57 can be designed so that it reacts in a very 1;~7~3~ 3 1 The device shown in ~ig~res 8 and 9 functions in princi-ple in the same manner as the above described devices. This further embodiment makes possible to reduce the forces for actua-tion of the dosing and arresting Ulli ~ and thereby to Drovide the user with a product which is especially easy to handle. The dosing spring 49 must act in this embodiment not with the help of its pretensioning upon the dosing stroke H. The spring forc~ is re~uired only for bringing the dosing piston 74 against the piston rod 70 in its initial position shown in Figure 8. During dis-placement of the piston rod ?0, the abutment disk 72 is moved and a pretensioning of the dosing spring 49 is formed until it is in the position in which the dosing piston 74, including its sealing ellment 75, is to be displaced. The device can also be designed so~that the dosing spring 49 is compressed to a ~loc~ length and only thereafter the movement of the dosing piston 74 is obtained.
Inlthe last case the dosing stroke can be brought directly by the user. The pressure SDring 26 can, therefore, be designed so that it~.has to overcome the return forces for moving the ~iston rod 70 with connected individual parts.
Also, in this embodiment the Diston rod 70 is first adtanced axially until the control piston 20 leaves the sealing 32. After this either a pretensioning of the dosing spring 49 is formed, or alternatingly the dosing spring 49 is compressed to the block length. With the sufficient Dretensioning or block length, the dosing piston 74 can be moved by a predetermined stroke.
~;~7~ 3 22386-25o2 Since during this movement the abutment disk 72 is moved into the supply chamber 60, simultaneously because o -the opening 73 the flowable medium is moved. In the event of thixotropous media, the desired change of the viscosity takes place, which leads to a favourable flow condition. The medium is moved by the dosing piston 74 into the supply opening 31, and then it is brought in communication with the application element 22 when it is withdrawn to the position shown in Figure 8.
It will be understood that each of the elements described above, or two or more together, may also find a use-ful application in other types of constructions differing from the types described above.
While the invention has been illustrated and described as embodied in a pin-shaped device for applying a flowable medium, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.
Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the stand-point of prior art fairly constitute essential characteristics of the generic or specific aspects of this invention.
Claims (20)
1. A pin-shaped device for releasing a flowable medium, comprising a housing having front and rear ends and an axis; a brush-like application element arranged to extend through said front end of said housing and displaceable in an axial direction;
a piston rod arranged to displace said application element, said housing having an intermediate wall provided with a guiding opening, said piston rod being axially movable in said guiding opening; a pressure spring acting upon said piston rod so that said piston rod is movable in said guiding opening under the action of said pressure spring; a dosing piston being in communi-cation with said application element; a control piston, said control piston and said application element being fixedly con-nected with said piston rod, while said dosing piston being axi-ally movable relative to said piston rod; a supply chamber and a dosing chamber formed in said housing and connected with one another, said dosing chamber being alternatingly closable during the movement of the piston rod at axially opposite ends; and a sealing ring and a sealing cylinder arranged so said control piston abuts at one end of said dosing chamber against said sealing ring, while said dosing piston abuts at an opposite end of said dosing chamber against said sealing cylinder.
a piston rod arranged to displace said application element, said housing having an intermediate wall provided with a guiding opening, said piston rod being axially movable in said guiding opening; a pressure spring acting upon said piston rod so that said piston rod is movable in said guiding opening under the action of said pressure spring; a dosing piston being in communi-cation with said application element; a control piston, said control piston and said application element being fixedly con-nected with said piston rod, while said dosing piston being axi-ally movable relative to said piston rod; a supply chamber and a dosing chamber formed in said housing and connected with one another, said dosing chamber being alternatingly closable during the movement of the piston rod at axially opposite ends; and a sealing ring and a sealing cylinder arranged so said control piston abuts at one end of said dosing chamber against said sealing ring, while said dosing piston abuts at an opposite end of said dosing chamber against said sealing cylinder.
2. A pin-shaped device as defined in Claim 1; and further comprising means for sealing said supply chamber at oppo-site ends, said sealing means including a ring-shaped sealing member arranged on said piston rod and sealing the supply chamber at its one end.
3. A pin-shaped device as defined in Claim 2, wherein said sealing means aslo include a sealing ring provided in said dosing chamber and sealing by means of said control piston said supply chamber at the other end.
4. A pin-shaped device as defined in Claim 2, wherein said sealing means also include a sealing cylinder arranged so that said supply chamber is sealed at the other end by means of said dosing piston.
5. A pin-shaped device as defined in Claim 4, wherein said control piston has an outer conical surface, said dosing pis-ton having an inner conical surface abutting against said outer conical surface of said control piston, said dosing piston carrying a sealing element which is complementary to said sealing cylinder.
6. A pin-shaped device as defined in Claim 1, wherein said control piston has a predetermined axial length, said dosing piston having a predetermined axial path which is different from said length of said control piston, said piston rod having an axial path which is greater than said length of said control piston and greater than said axial path of said dosing piston.
7. A pin-shaped device as defined in Claim 1, wherein said intermediate wall closes said supply chamber from behind and has a conical annular groove reducing toward said rear end of said housing; and further comprising a ring-shaped sealing member arranged in said conical ring-shaped groove so that said piston rod abuts against said ring-shaped sealing member, said ring-shaped groove being wider than said ring-shaped sealing member in direction of its conical region.
8. A pin-shaped device as defined in Claim 7, wherein said dosing piston has a supporting pipe which in an initial position of said piston rod abuts against said ring-shaped sealing member under the action said pressure spring.
9. A pin-shaped device as defined in Claim 8; and fur-ther comprising a diaphragm valve which seals said supply chamber relative to said piston rod and has a valve bush, and a through-flow bush, said diaphragm valve having an outer diameter part which is mounted in said throughflow bush by means of said valve bush, and an inner diameter portion which in an initial position of said piston rod abuts against said supporting pipe.
10. A pin-shaped device as defined in Claim 8, and fur-ther comprising a diaphragm-like sealing element arranged between said dosing piston and said supporting pipe and having an inner diameter portion which abuts against said piston rod and an outer diameter portion which abuts against said sealing cylinder.
11. A pin-shaped device as defined in Claim 1; and further comprising a throughflow bush forming a communication between said supply chamber and said dosing chamber, a ring-shaped flange and an intermediate bush arranged so that said throughflow bush is supported in said housing by said ring-shaped flange and said intermediate bush, said throughflow bush having at least one overflow surface.
12. A pin-shaped device as defined in Claim 11, wherein said throughflow bush communicating said supply chamber with said dosing chamber has a plurality of such overflow surfaces.
13. A pin-shaped device as defined in Claim l; and further comprising a front part, a cylinder bush, a throughflow bush communicating said supply chamber with said dosing chamber, and an intermediate bush which supports said front part, said cylinder bush and said throughflow bush and is insertable in said housing.
14. A pin-shaped device as defined in Claim l; and further comprising a throughflow bush communicating said supply chamber with said dosing chamber, a dosing spring having two ends and guided in said throughflow bush, and a supporting wall fixedly connected with said housing, said dosing spring having one end with which it abuts against said dosing piston and another end with which it abuts against said supporting wall.
15. A pin-shaped device as defined in Claim 14, wherein said dosing spring has a predetermined spring force, said pressure spring located between said housing and said piston rod having a force which is greater than said spring force of said dosing spring.
16. A pin-shaped device as defined in Claim 1, wherein said housing has an inner wall; and further comprising a closing cap which closes said housing, and a guiding piston which is mounted on said piston rod and displaceable along said inner wall of said housing, said guiding piston having a coupling piece for receiving said closing cap.
17. A pin-shaped device as defined in Claim 1, wherein said housing has a front part provided with a supply opening, said piston rod being movable between two positions in which said appli-cation element projects outwardly beyond said front part and in which said application element is completely withdrawn into said supply opening, respectively; and arresting means arranged for arresting said piston rod in said two end positions.
18. A pin-shaped device as defined in Claim 1, wherein said housing has an intermediate wall through which said piston rod extends, said piston rod being provided with an abutment disk fixedly mounted thereon and having two end sides, said abutment disk being arranged so that its one end side abuts against said intermediate wall of said housing; and further comprising a dosing spring arranged between said abutment disk and said dosing piston, the other end side of said abutment disk forming an abutment for said dosing spring.
19. A pin-shaped device as defined in Claim 18, wherein said abutment disk has a central axis and a plurality of openings extending parallel to said central axis.
20. A pin-shaped device as defined in Claim 18, wherein said piston rod has a notch, said abutment disk being axially fixed on said notch of said piston rod.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3629627.9-23 | 1986-08-30 | ||
| DE19863629627 DE3629627C1 (en) | 1986-08-30 | 1986-08-30 | Pin-shaped device for dispensing flowable masses from a storage container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1279609C true CA1279609C (en) | 1991-01-29 |
Family
ID=6308606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000545602A Expired - Lifetime CA1279609C (en) | 1986-08-30 | 1987-08-28 | Pin-shaped device for releasing a flowable medium |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0258769A3 (en) |
| JP (1) | JPS6359371A (en) |
| CA (1) | CA1279609C (en) |
| DE (1) | DE3629627C1 (en) |
| ES (1) | ES2001846A4 (en) |
| GR (1) | GR880300085T1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3820450A1 (en) * | 1988-06-16 | 1990-01-04 | Geka Brush Georg Karl Gmbh | APPLICATION PEN FOR LIQUIDS |
| DE3827718A1 (en) * | 1988-08-16 | 1990-02-22 | Faber Castell A W | Apparatus for applying viscous substances |
| DE3910066C2 (en) * | 1988-08-18 | 1997-10-02 | Thomas Peter | Device for portioning and dispensing flowable media |
| FR2643290B1 (en) * | 1989-02-20 | 1991-12-20 | Robert Christian | PORTABLE LIQUID DISPENSER, ESPECIALLY DANGEROUS |
| JPH0412994Y2 (en) * | 1989-04-04 | 1992-03-27 | ||
| DE3923826A1 (en) * | 1989-07-19 | 1991-01-31 | Geka Brush Georg Karl Gmbh | Instrument for applying pasty substance - has sliding knob on end of housing to bring instrument to use position |
| DE3923828C1 (en) * | 1989-07-19 | 1990-12-20 | Georg Karl Geka-Brush Gmbh, 8809 Bechhofen, De | Fluid applicator ratchet - has centre hole through which plunger passes with play, and coil spring between ratchet and transverse sleeve end wall |
| JP2515041Y2 (en) * | 1990-04-27 | 1996-10-23 | フィグラ株式会社 | Application or copy tool |
| JPH0675600B2 (en) * | 1990-09-14 | 1994-09-28 | テルモ株式会社 | Applicator |
| WO2002102348A1 (en) * | 2002-05-02 | 2002-12-27 | Priscilla S.R.L. Unipersonale | Anti-stretch mark product and corresponding method |
| BR112013008210A2 (en) * | 2010-10-06 | 2016-06-21 | Ratioplast Gmbh | applicator for a fluent application medium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3144676A (en) * | 1962-03-07 | 1964-08-18 | Mura Joseph L La | Fountain brush |
| US3351074A (en) * | 1964-07-06 | 1967-11-07 | Bruno D Aston | Applicator for cosmetics and the like |
| JPS608803B2 (en) * | 1982-06-24 | 1985-03-06 | オクス工業株式会社 | liquid cosmetic applicator |
| EP0208797A1 (en) * | 1985-07-13 | 1987-01-21 | A.W. Faber- Castell Unternehmensverwaltung GmbH & Co. | Applying device for masses capable of flowing |
-
1986
- 1986-08-30 DE DE19863629627 patent/DE3629627C1/en not_active Expired
-
1987
- 1987-03-12 JP JP62055451A patent/JPS6359371A/en active Pending
- 1987-08-22 ES ES87112219T patent/ES2001846A4/en active Pending
- 1987-08-22 EP EP87112219A patent/EP0258769A3/en not_active Withdrawn
- 1987-08-28 CA CA000545602A patent/CA1279609C/en not_active Expired - Lifetime
-
1988
- 1988-10-21 GR GR88300085T patent/GR880300085T1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE3629627C1 (en) | 1988-01-14 |
| ES2001846A4 (en) | 1988-07-01 |
| EP0258769A3 (en) | 1989-09-06 |
| JPS6359371A (en) | 1988-03-15 |
| EP0258769A2 (en) | 1988-03-09 |
| GR880300085T1 (en) | 1988-10-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |