EP0623060A1 - Pompe a precompression perfectionnee. - Google Patents
Pompe a precompression perfectionnee.Info
- Publication number
- EP0623060A1 EP0623060A1 EP93904092A EP93904092A EP0623060A1 EP 0623060 A1 EP0623060 A1 EP 0623060A1 EP 93904092 A EP93904092 A EP 93904092A EP 93904092 A EP93904092 A EP 93904092A EP 0623060 A1 EP0623060 A1 EP 0623060A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- push rod
- pump body
- pump
- gland
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1001—Piston pumps
- B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
- B05B11/1025—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem a spring urging the outlet valve in its closed position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1097—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle with means for sucking back the liquid or other fluent material in the nozzle after a dispensing stroke
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1043—Sealing or attachment arrangements between pump and container
- B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
- B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1073—Springs
- B05B11/1074—Springs located outside pump chambers
Definitions
- the present invention relates to an improved precompression pump, more particularly intended for spraying or dispensing a fluid product for example, such as a perfume, a cosmetic product or a pharmaceutical product.
- a fluid product for example, such as a perfume, a cosmetic product or a pharmaceutical product.
- Such a liquid or pasty pump is generally actuated using a finger.
- a particular type of manual precompression pump is described in document FR-2 403 465.
- This type of pump comprises a cylindrical pump body in which an annular piston slides, said piston being controlled by a push rod which slides in said piston and which has an outlet channel opening into the pump body through a lateral opening, the piston comprising a substantially axial annular lip which cooperates with the push rod to close or release said lateral opening, the push rod being connected to the piston by a first elastic means which pushes the piston towards a position where it closes said lateral opening, said elastic means presser urging said piston towards an annular gland which urges said lip radially towards the push rod, by wedge effect.
- the present invention aims to solve this technical problem.
- the present invention relates to a pump of the type described above, characterized in that the gland is further adapted to abut against the piston outside said lip, which limits the relative approximation between the gland and the piston and limits therefore the radial force applied to said lip of the piston.
- the subject of the invention is a precompression pump comprising at least:
- a push rod sliding in said piston and passing through said second end of the pump body, said push rod extending between a first end outside the pump body and a second end inside the pump body , said push rod having a blind channel which extends axially from the outer end of the push rod to a lateral opening which opens into the interior of the pump body, the piston comprising an annular central lip spanning a certain distance towards the first end of the pump body, said central lip being adapted to slide in sealed contact at least on a part of the push rod, situated between said lateral opening and the second end of the push rod, said central lip being adapted to clear the lateral opening of the push rod when the piston is moved sufficiently towards the first end of the push rod.
- a first elastic means mounted between the push rod and the piston so as to urge said piston towards the second end of the push rod
- annular gland placed between the piston and said first end of the pump body, mounted to slide in said pump body and movable axially relative to the push rod,
- a second elastic means urging the gland towards the second end of the pump body by applying the gland against the central lip of the piston, said gland and said central lip having shapes suitable for the gland to apply a force of radial tightening directed inwards, by wedge effect, while axially urging said central lip towards the second end of the pump body, characterized in that the gland is further adapted to abut against the piston outside said central lip, which limits the relative approximation between the gland and the piston and therefore limits the radial tightening force applied to the central lip of the piston.
- the first end of the pump body may comprise an intake valve
- the pump may include an intake valve and the pump also comprises a second elastic means which urges the push rod towards said second end of the pump body.
- a precompression pump comprising at least:
- - a cylindrical pump body extending between a first end provided with an inlet valve and a second end.
- the pump also comprises:
- annular gland integral with the push rod and disposed between the lateral opening of the push rod and the first end of the pump body, - a first elastic means mounted between the push rod and the piston and urging said piston towards the gland, so that the central lip of the piston is applied against the gland, the gland and the central lip having shapes adapted so that the gland applies to the central lip a radial tightening force directed inwards, by effect wedge, and the gland is further adapted to abut against the piston outside the central lip, which limits the relative approximation between the gland and the piston and therefore limits the radial tightening force applied to the central lip piston.
- the gland may have an inner annular surface facing the central lip of the piston, flared by widening towards the second end of the pump body.
- the central lip of the piston may comprise the central lip of the piston has an outer annular surface, facing the gland, which has an outer diameter increasing towards the second end of the pump body.
- the gland may include a crown adapted to abut against the piston outside the central lip, said crown having radial cutouts.
- the part of the push rod on which the central lip of the piston slides with sealing can be cylindrical.
- this part of the push rod may include a peripheral relief projecting radially outwards in the vicinity of the lateral opening of the push rod, the central lip of the piston having a cylindrical inner surface facing said relief.
- the piston may include reliefs on which said helical spring rests.
- FIG. 1 is a view in longitudinal section of a pump according to a first embodiment of the invention, in the rest position,
- FIG. 2 is an enlarged view in partial section of the pump of FIG. 1, in the rest position,
- - Figure 2a is a view similar to Figure 2, for an alternative embodiment, - Figure 3 is an enlarged view in partial section of the pump of Figure 1, in the stop position of the gland,
- FIG. 4 is a view in longitudinal section of a pump according to a second embodiment of the invention, in the rest position,
- FIG. 5 is a sectional view along line NN of the pump of Figure 4
- - Figure 6 is a developed view showing the support of the precompression spring on the support ribs of the piston of the pump of the FIG. 4, by exaggerating the deformations of the ribs,
- FIG. 7 is a longitudinal sectional view of a variant of the pump of Figure 4
- - Figure 8 is a detail view of Figure 6
- FIG. 9 is a longitudinal sectional view of a variant of the pump of Figure 7, intended to spray a single dose of product.
- the pumps described here are generally made of molded plastic, the seals being generally made of elastomer and the springs of metal.
- the pump presented in FIG. 1 comprises a hollow cylindrical pump body 1, having an axis of revolution 2.
- the pump body 1 has an open upper end and a lower throttle extended downwards by an inlet duct lb suitable for communicating with a reservoir of product to be dispensed (not shown), directly or through a dip tube (not shown).
- the pump body also comprises a lower part of reduced internal diameter le, which extends from the lower constriction la in the direction of the open end le of the pump body, up to an internal shoulder Id of said body.
- the pump body 1 delimits a pump chamber 6 which normally contains product to be dispensed, and which communicates with the inlet duct 1b via the intermediate channel an inlet valve, which may for example comprise a conical seat 16, formed in the pump body 1 between the lower constriction la and the inlet duct lb, and a ball 15 adapted to be applied so tight on the conical seat 16 by closing the inlet duct 1b, when an overpressure is created in the pump chamber 6.
- an inlet valve which may for example comprise a conical seat 16, formed in the pump body 1 between the lower constriction la and the inlet duct lb, and a ball 15 adapted to be applied so tight on the conical seat 16 by closing the inlet duct 1b, when an overpressure is created in the pump chamber 6.
- the ball 15 comes off from its seat 16 by opening the inlet duct lb.
- the ball 15 can be metallic.
- the inlet valve could have any other known shape, without departing from the scope of the present invention.
- the pump body 1 can for example be mounted on the neck of the product reservoir using a metal cup 10 set on the open upper end of the pump body, said metal cup having a bottom 10a provided with a central opening 10b.
- An annular flat seal 31 is disposed between the open end 1c of the pump body and the bottom 10a of the metal cup. It goes without saying that the pump body 1 could be fixed by any other known means to the reservoir, without departing from the scope of the present invention.
- the piston 3 has an outer skirt 5, at least one periphery of which is in sealed contact with the pump body 1, and a conduit interior 3d axial, substantially cylindrical.
- the skirt 5 of the piston extends towards the lower constriction 1a of the pump body, but it could possibly also extend towards the bottom 10a of the cup 10, so as to abut against the seal 31 when the pump is in a rest position.
- the piston 3 further comprises an annular lower lip 4 which extends axially towards the constriction 1a of the pump body and which is disposed in the center of the piston 3, around the inner duct 3d.
- a push rod 7 centered on the axis 2 slides in the piston 3.
- the push rod 7 passes through the orifice 10b of the metal cup, and extends from a first end 7j inside the pump body up to 'at a second end 7f outside the pump body, which generally receives a pusher.
- the push rod 7 has a collar 7d extended towards the lower throttle 1a of the pump body by a cylindrical part 7g, of external diameter substantially equal to the internal diameter of the piston 3d pipe " , said cylindrical part 7g of the sliding rod with tightness in said conduit 3d Between the collar 7d and the piston 3 is disposed a helical spring 34.
- the push rod 7 is biased by the spring 34 towards the open end le of the pump body, and its stroke is limited towards the high by the abutment of the collar 7d against the flat seal 31 and the bottom 10a of the cup. At rest, the collar 7d of the push rod is therefore applied tightly against the seal 31. From its outer end 7f, the push rod 7 is pierced with an axial blind channel 7a, which opens laterally through at least one orifice 7b. The orifice 7b is covered by the conduit 3a of the piston when the pump is in a rest position, that is to say when no action is exerted on the push rod 7. The 3d conduit could be in tight contact with the rod 7 over the entire height of said conduit.
- the 3d pipe has two zones of reduced internal diameter 3b and 3c, located respectively above and below the orifice 7b when the pump is in its rest position, the zone 3c being formed inside the central lower lip 4, and the said zones 3b and 3c being in sealed contact with the rod 7.
- annular gland 8 having substantially the shape of a crown of revolution around the axis 2, is disposed under the central lower lip 4 of the piston and urged upwards by a helical spring 35, of stiffness less than the stiffness of the spring 34, which rests on the lower throttle 1a of the pump body.
- the central lower lip 4 of the piston may comprise a frustoconical outer surface 4a, of outer diameter decreasing downwards, from a maximum diameter to a minimum diameter.
- the piston 3 may have a flat annular face 3a, the normal of which is directed downward, extending radially between the central lower lip 4 and the skirt 5.
- the gland 8 may have a cylindrical inner duct 8 a in diameter between the maximum diameter and the minimum diameter of the frustoconical surface 4a, said cylindrical inner conduit 8a being extended towards the piston 3 by a ring 8b of diameter greater than the maximum diameter of the frustoconical surface 4a.
- the crown 8b advantageously comprises radial cutouts 8d, the utility of which will be seen later.
- the gland 8 has an annular shoulder provided with an inner edge 8c, preferably rounded so as not to have a sharp angle. The inner edge 8c is applied against a periphery of the frustoconical outer surface 4a of the piston by the action of the spring 35.
- the inner edge 8c exerts on the central lower lip 4 both an axial force directed towards the end 1c of the pump body, and a radial force directed towards the push rod 7, by wedge effect, under the action of the springs 34 and 35. But also, the crown 8b is in abutment against the annular face 3a of the piston, and exerts on the piston an axial force directed towards the end le of the pump body.
- the gland 8 applies said central lower lip 4 of the piston elastically against the push rod 7, while pushing the piston 3 upwards.
- the clamping effect of the gland 8 is limited by the stop of the crown 8b on the surface 3a of the piston: this tightening effect is thus controlled with great precision, which prevents jamming of the lip 4 or its deformation by creep.
- the central lower lip 4 is located at a certain distance below the lateral orifice 7b of the push rod, so that the radial tightening force exerted on the lip 4 does not risk wedging said lip 4 in the orifice 7b by an extrusion phenomenon.
- the orifice 7b is chamfered or enlarged at its outlet on the rod 7.
- the enlarged part 7c of the orifice 7b can be produced by a relief of the mold in which the rod 7 is formed, while the orifice 7b itself can be produced by a spindle which penetrates into the mold during molding, so that the edges of the enlarged part 7c are sharp and free from any molding defect, while the edges of the orifice 7b itself even may have small molding defects due to the translation of the spindle during molding. As the lip 4 slides on the edges of the enlarged part 7c, these possible defects do not. are not bothersome.
- the push rod 7 can be produced as shown in FIG. 2a, in two parts.
- the rod 7 has a first narrowed cylindrical part 60 which extends the cylindrical part 7g downwards.
- the lateral orifice 7b opens into said part 60.
- This part 60 itself extends downwards by a second narrower cylindrical part 61, then by a frustoconical narrowing 62, then by a short cylindrical part 63 which ends in a external relief 64 at the lower end of the rod 7.
- a cylindrical annular ring 65 of external diameter equal to the diameter of the cylindrical part 7g, is fitted onto the parts 61, 62, 63, and snapped onto the relief 64.
- the ring 65 has an outer upper edge 65a chamfered or rounded. In this variant, any possibility of poor quality molding is eliminated at the places where the piston 3 slides on the rod 7 and the ring 65, and in particular at the edge 65a.
- the operation of the pump is as follows.
- the pump chamber 6 generally contains product to be sprayed or dispensed. As the product it contains is incompressible, the piston 3 cannot descend into the pump chamber: only the push rod 7 therefore descends, compressing the spring 34 and possibly causing a slight rise of the piston 3 in the body pump.
- the cutouts 8d also facilitate the evacuation of the air contained in the pump chamber, when priming the pump, by preventing this air from being trapped under the piston.
- the piston 3 then descends into the pump body 1 as the volume of product contained in the pump chamber 6 decreases, by compressing the spring 35, until the gland 8 comes into abutment against the shoulder Id , where the downward movement of the push rod 7 and the piston 3 ceases.
- the gland 8 could abut against any part integral with the pump body 1, without departing from the scope of the present invention.
- the force exerted by the gland 8 on the piston 3 can therefore be significant, but it is taken up both by the annular face 3a and the central lower lip 4, which limits the force taken up by the part frustoconical lower 4a, and therefore also limits the radial tightening force exerted on said central lower lip 4 towards the push rod 7.
- the relative axial position of the gland 8 relative to the piston is precisely fixed by the stop of the crown 8b of the gland against the annular face 3a of the piston, so that the radial deformation of said frustoconical lower part 4a towards the push rod 7 is limited.
- the stiffer spring 34 When the user releases the push rod 7, the stiffer spring 34 first resumes its initial shape, pushing the push rod 7 upwards relative to the piston 3, so that the lip 4 of the piston 3 obscures the outlet orifice 7b, which isolates the pump chamber 6. After the relaxation of the spring 34, the spring 35 relaxes in turn, pushing the piston 3 and the gland 8 upward. This movement creates a vacuum in the pump chamber 6, and therefore opens the inlet valve 15, 16, allowing the product contained in the reservoir to return to the pump chamber 6, as the piston 3 goes up, until it reaches the rest position.
- the pump body 1 is pierced with an air intake orifice 18, located in the vicinity of the upper end of the said pump body.
- the collar 7d is no longer in contact with the seal 31, so that air can pass between the push rod 7 and the seal 31.
- a volume of air equal to the volume of product sucked in the pump chamber can pass into the reservoir via the orifice return air 18.
- the pump could not compo ⁇ er air return port 18, without departing from the scope of the present invention.
- Figures 4 and 5 show a second embodiment of the pump according to the invention.
- the pump of FIGS. 4 and 5 is an improvement on the pump shown in FIG. 7b of European patent application No. 91 403 023.4, not yet published at the time of filing of this application.
- the pump comprises a hollow cylindrical pump body 1, having an axis of revolution 2.
- the pump body 1 extends between an open upper end, and a lower throttle la which is extended by an inlet duct. lb adapted to communicate with a reservoir containing the product to be dispensed (not shown), directly or through a dip tube lf.
- the pump body 1 delimits a pump chamber 6 which normally contains product to be dispensed, and which communicates with the inlet duct 1b via an inlet valve.
- the outlet valve can for example comprise a conical seat 16 and a ball 15 adapted to be applied in a sealed manner on the conical seat 16 by closing the inlet duct 1b, when an overpressure is created in the pump chamber 6.
- the ball 15 comes off from its seat 16 by opening the inlet duct 1b.
- the inlet valve could have any other known shape, without departing from the scope of the present invention.
- the pump body 1 can be mounted on the neck of the product reservoir using a metal cup 10 crimped on the open upper end 1c of the pump body, said metal cup having a bottom 10a provided with 'a- central hole 10b.
- the metal cup 10 has at in addition to a widening 10c, and a flat annular seal 31b is disposed between the widening 10c and the neck of the reservoir.
- the piston 3 has an outer skirt 5, at least one periphery of which is in sealed contact with the pump body 1, and a conduit interior 3d axial.
- the piston 3 further comprises an annular lower lip 4 which extends axially towards the constriction 1a of the pump body and which is disposed in the center of the piston 3, around the inner duct 3d.
- the pump comprises an axial push rod 40, centered on the axis 2, which passes through the orifice 10b of the metal cup.
- the push rod 40 is formed in two parts, and comprises an outer sleeve 41 fixed to an inner core 42, by force fitting or by other means.
- the outer sleeve 41 has a shape of revolution around the axis 2. It passes through the central orifice 10b of the metal cup 10, and extends outside the pump body 1, to an outer end or upper 41f, which can receive a pusher 43.
- the pusher 43 allows both the actuation of the pump and the output of the product. As shown in Figure 4, the pusher may have a side outlet, optionally provided with a spray nozzle 43a.
- the pusher 43 could have any other known shape without departing from the scope of the present invention.
- the sleeve 41 has an axial channel 41a which passes through it. From the outer end 41f, the sleeve 41 extends to the inside of the pump body, to a collar 41c which extends substantially radially outward.
- the sleeve 41 may be provided with a cylindrical skirt 41d, which extends towards the lower constriction 1a of the pump body from the collar 41c.
- the cylindrical skirt 41d has an outer diameter smaller than the diameter of the collar 41c, and an inner diameter greater than the outer diameter of the inner core 42.
- the inner core 42 has a first cylindrical part 42c which extends from an upper end 42f in the direction of the lower constriction la of the pump body.
- the upper end 42f is fitted into the sleeve 41.
- Said first cylindrical part 42c of the core 42 extends towards the lower constriction la of the pump body by a second cylindrical part 42d of greater diameter.
- the core 42 is pierced with an axial blind channel 42a which communicates with the channel 41a of the outer sleeve 41, and which opens laterally, through at least one orifice 42b formed in the first cylindrical part 42c , in the vicinity of the second cylindrical part 42d.
- Said first cylindrical part 42c of the core 42 slides in the inner pipe 3d of the piston, without sealing.
- the inner lip central 4 of the piston is cylindrical, and has a cylindrical internal surface 4b having an internal diameter substantially equal to the external diameter of the second cylindrical part 42d of the core 42.
- the piston 3 has a cylindrical part 45 which extends axially in the direction of the end of the pump body, around the core 42.
- Said cylindrical part 45 has an external diameter substantially equal to the internal diameter of the skirt 41d of the sleeve 41, so that said cylindrical part 45 slides with sealing inside the skirt 41d.
- the cylindrical part 45 could advantageously be replaced by a frustoconical part which widens slightly upwards, so as to improve the seal.
- part 45 in order to limit or eliminate the creeping effects of part 45, which can reduce its tightness over time, said part 45 can be reinforced by ribs (not shown) which extend radially inwards. and which slide against the second cylindrical part 42c of the core 42.
- the cylindrical part 45 and the skirt 41 d thus define an annular suction chamber 46, disposed around the core 42, which communicates with the orifice 42b, because the piston 3 is not in sealed contact with the first cylindrical part 42c of the core 42. The usefulness of this suction chamber will be seen below.
- the core 42 is extended radially outward by a widening 42e, which itself can extend towards the lower constriction 1a of the pump body by a skirt 42g.
- the skirt 42g cooperates with axial ribs lg, formed inside the pump body 1 and which extend over a certain distance from the lower constriction la of said body pump, to guide the core 42 in its movement inside the pump body.
- the enlargement 42e of the core 42 comprises a crown 44, which extends axially from said enlargement 42 towards the piston 3.
- this crown is interrupted by radial cutouts 44a, as shown in FIG. 5.
- a precompression spring 47 is disposed between the collar 41c of the sleeve 41 and the piston 3, so as to push said piston 3 towards the crown 44.
- the piston 3 has an annular surface 3a radial between the skirt 5 and the lip 4. Under the effect of the precompression spring 47, said annular surface 3a is applied against the crown 44.
- the crown 44 has an internal surface 44b frustoconical, which widens in the direction from the upper end of the pump body and which exerts a radial clamping force, by wedge effect, on the lip 4 when the ring 44 is in abutment against the surface 3a of the piston.
- the seal of the contact between the lip 4 and the second cylindrical part 42d of the core 42 is reinforced, while the clamping force exerted by the crown 44 is precisely controlled by the abutment of said crown 44 against the surface 3a of the piston, which avoids irreversible deformations or jamming of the lip 4 of the piston.
- the lower enlargement 42e of the core 42 is pierced with orifices 42h which facilitate the passage of the product during expulsion, but these orifices could be omitted without leaving the frame of the invention.
- the pump comprises a return spring 48 disposed between the enlargement 42e of the core and the lower constriction la of the pump body.
- the return spring 48 biases the core 42 and therefore the assembly of the push rod 40, towards the open end of the pump body.
- the piston 3 has slots or ribs 49 arranged substantially radially, on which the precompression spring 47 rests.
- the precompression spring 47 is a helical spring, its end turns can be at rest included in a plane not perpendicular to the axis 2.
- the spring 47 would tend to deform the piston, or at least the outer skirt 5 of the piston, by imposing on it a certain cant, that is to say a certain rotation around an axis perpendicular to the axis 2, and this all the more easily as the push rod 40 is formed in two parts fitted one inside the other.
- the operation of the pump in FIG. 4 is as follows.
- a user presses the plunger 43 he lowers the push rod 40 inside the pump body, which biases the piston 3 downwards, due to the precompression spring 47.
- the volume of the chamber pump 6 therefore tends to decrease, so that there is an overpressure which presses the ball 15 against its seat 16, isolating the pump chamber 6.
- the piston 3 cannot descend into the pump chamber: only the push rod 40 therefore descends, and possibly the piston 3 rises slightly in the pump body.
- the return spring 48 is compressed, as is the precompression spring 47.
- the value of the pressure prevailing in the pump chamber for which the product is expelled is determined by the thrust exerted by the spring 47 at the end of the sliding stroke of the lip 4 on the cylindrical part 42d, and this thrust is greater than the thrust exerted by the precompression spring 47 on the piston 3 at rest.
- This is advantageous insofar as it is thus possible to slightly decrease the thrust at rest exerted by the spring 47 on the piston 3, which further tends to reduce the possible deformations imposed by the spring 47 on the piston 3.
- the lateral orifice 42b of the core 42 is drilled in the first cylindrical part 42a of said core, on which the piston 3 slides without sealing.
- the edges of the orifice 42b have slight molding defects, these do not interfere at all with the sliding of the piston 3 on the core 42.
- the expulsion rate of the product is improved.
- the volume of the suction chamber 46 increases, and as the piston 3 slides without sealing on the first cylindrical part 42c of the core 42, the suction chamber 46 communicates with the orifice 42b, so that the increase in volume of the suction chamber 46 produces suction in the axial channel 42a of the core 42, in the channel 41a of the sleeve 41, and in the outlet passage of the pusher 43.
- the product contained in the pusher 43 does not drip or ooze outside of said pusher during storage of the device, particularly when the product has a pasty consistency.
- the return spring 48 of the push rod 40 could be mounted outside the pump body, for example between a collar of the sleeve 41 and the bottom 10a of the cup 10.
- Figures 7 and 8 show a variant of the pump of Figures 4 to 6.
- the structure of the pump of Figures 7 and 8 is very similar to that of Figures 4 to 6, so that it will not be described again in detail here. It differs from the pump of FIGS. 4 to 6 by the fact that the enlargement 42e of the core 42 does not have an orifice 42h, and also by the fact that the enlarged lower part 42d of the core 42 is no longer cylindrical, but frustoconical, widening upwards. Thus, said part 42d of the core 42 forms an annular edge 50 projecting around the core 42.
- the pump of Figure 9 has a structure very similar to that of Figure 7, and will therefore not be described again in detail here.
- This pump differs from that of FIG. 7 in that it is intended to spray or distribute a single dose of product, initially contained in the pump chamber 6.
- the pump in FIG. 9 does not have any air return orifice 18. It also does not include the re-aspiration chamber 46 of the pump of FIG. 7, in which case the piston 3 must slide with sealing on the core 42 of the rod 40. It will however be noted that the re-aspiration chamber 46 could possibly be maintained as in FIG. 7, although re-aspiration is of little interest in the present case.
- the pump of figure 9 does not comprises no inlet valve 15, 16, nor inlet conduit 1b, but only a filling passage 60 in the bottom 1a of the pump body, closed by a ball or other equivalent means.
Landscapes
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9200559 | 1992-01-20 | ||
FR9200559A FR2686377B1 (fr) | 1992-01-20 | 1992-01-20 | Pompe a precompression perfectionnee. |
PCT/FR1993/000046 WO1993013873A1 (fr) | 1992-01-20 | 1993-01-19 | Pompe a precompression perfectionnee |
Publications (2)
Publication Number | Publication Date |
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EP0623060A1 true EP0623060A1 (fr) | 1994-11-09 |
EP0623060B1 EP0623060B1 (fr) | 1995-08-23 |
Family
ID=9425795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93904092A Expired - Lifetime EP0623060B1 (fr) | 1992-01-20 | 1993-01-19 | Pompe a precompression perfectionnee |
Country Status (6)
Country | Link |
---|---|
US (1) | US5482188A (fr) |
EP (1) | EP0623060B1 (fr) |
JP (1) | JP3265347B2 (fr) |
DE (1) | DE69300399T2 (fr) |
FR (1) | FR2686377B1 (fr) |
WO (1) | WO1993013873A1 (fr) |
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WO2015191490A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Lavage de distributeurs pour délivrer une expérience utilisateur cohérente |
WO2015191496A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Lavage de distributeurs pour délivrer une expérience utilisateur cohérente |
WO2015191518A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Articles diffusant des parfums de longue durée |
WO2015191492A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Nettoyage de distributeurs pour délivrer une expérience utilisateur cohérente |
WO2015191515A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Distributeur pourvu de deux réservoirs |
WO2015191495A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Vidange de distributeurs garantissant à l'utilisateur une utilisation compatible |
WO2015191494A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Distributeurs servant à apporter au consommateur une expérience cohérente |
WO2015191491A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Rinçage de distributeurs pour fournir à l'utilisateur une régularité d'utilisation |
WO2015191517A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Articles permettant d'obtenir des parfums persistants |
WO2017044083A1 (fr) | 2015-09-09 | 2017-03-16 | The Procter & Gamble Company | Distributeurs de distribution de microcapsules |
WO2017044084A1 (fr) | 2015-09-09 | 2017-03-16 | The Procter & Gamble Company | Distributeurs de microcapsules |
WO2017044087A1 (fr) | 2015-09-09 | 2017-03-16 | The Procter & Gamble Company | Distributeurs de microcapsules |
WO2017044085A1 (fr) | 2015-09-09 | 2017-03-16 | The Procter & Gamble Company | Dispositifs de distribution de micro-capsules |
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Publication number | Priority date | Publication date | Assignee | Title |
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FR2719084B1 (fr) * | 1994-04-22 | 1996-07-12 | Valois Sa | Dispositif de réglage du volume d'une chambre de pompe d'une pompe à précompression. |
FR2719242B1 (fr) * | 1994-04-27 | 1996-07-12 | Valois Sa | Pompe à précompression perfectionnée. |
US5655688A (en) * | 1994-10-19 | 1997-08-12 | Aptargroup, Inc. | Atomizing pump with high stroke speed enhancement and valve system therefor |
SI9600118A (en) * | 1995-04-13 | 1996-10-31 | Monturas Sa | Precompression pump sprayer |
US5697530A (en) * | 1996-01-29 | 1997-12-16 | Monturas, S.A. | Precompression pump sprayer |
JP3697012B2 (ja) * | 1996-03-22 | 2005-09-21 | 株式会社三谷バルブ | 往復ポンプタイプの噴出器 |
US6158617A (en) * | 1996-10-30 | 2000-12-12 | The Procter & Gamble Company | Concentrated reduced dosage spray pump delivery system |
DE19651356C2 (de) * | 1996-12-10 | 1998-10-22 | Walu Labortechnik Gmbh | Kolben für ein Dosiergerät, Titriergerät oder dergleichen |
US6423080B1 (en) * | 1997-02-13 | 2002-07-23 | Scimed Life Systems, Inc. | Percutaneous and hiatal devices and methods for use in minimally invasive pelvic surgery |
DE19727811A1 (de) * | 1997-06-30 | 1999-01-07 | Gruenenthal Gmbh | Pumpen-Betätigungseinrichtung |
US6209759B1 (en) * | 1997-07-04 | 2001-04-03 | Valois S.A. | Hand-operated pump with a free floating sleeve piston |
FR2806330B1 (fr) * | 2000-03-20 | 2002-10-25 | Valois Sa | Organe de distribution a clapet de sortie forme par un piston differentiel |
US6554160B2 (en) * | 2001-03-22 | 2003-04-29 | Valois S.A. | Dispenser member such as a pump or a valve |
JP3942020B2 (ja) † | 2002-05-23 | 2007-07-11 | 株式会社吉野工業所 | 蓄圧式ポンプおよびそのモジュール |
KR100755809B1 (ko) * | 2001-03-23 | 2007-09-05 | 주식회사 종우실업 | 수동식 정량 분사 펌프 |
US7055721B2 (en) * | 2001-03-23 | 2006-06-06 | Chong Woo Co., Ltd. | Finger-operated spray pump ejaculating fluid in fixed quantity |
EP1390153A4 (fr) * | 2001-05-30 | 2005-06-15 | Chong Woo Co Ltd | Vaporisateur |
FR2849000B1 (fr) * | 2002-12-23 | 2005-07-08 | Valois Sas | Dispositif de distribution de produit fluide. |
KR100995652B1 (ko) * | 2003-08-28 | 2010-11-22 | 주식회사 종우실업 | 예압식 저형상 미세 수동 분사펌프 |
ITMI20041249A1 (it) * | 2004-06-22 | 2004-09-22 | Lumson Spa | Pompa ad azionamento manuale per l'erogazione di sostanze cremose |
US7870977B2 (en) * | 2005-04-28 | 2011-01-18 | Meadwestvaco Calmar, Inc. | Dispenser having an improved inlet valve |
US20080006656A1 (en) * | 2006-07-10 | 2008-01-10 | Living Fountain Plastic Industrial Co., Ltd. | Lotion pump structure |
FR2917651B1 (fr) * | 2007-06-20 | 2010-09-17 | Rexam Dispensing Sys | Pompe pour la distribution d'un produit liquide a amorcage ameliore |
US7748576B2 (en) * | 2007-07-24 | 2010-07-06 | Hsih Tung Tooling Co., Ltd. | Pump assembly with pressable head |
US20100135834A1 (en) * | 2008-12-03 | 2010-06-03 | Living Fountain Plastic Industrial Co., Ltd. | Double-piston mechanism of an emulsion squeeze head |
CN201579158U (zh) * | 2009-12-21 | 2010-09-15 | 陈秋火 | 背吸式防滴漏喷头 |
US20110303702A1 (en) * | 2010-06-11 | 2011-12-15 | Derxin (Shanghai) Cosmetics Co., Ltd. | Liquid spray head assembly |
US9415401B2 (en) * | 2012-04-04 | 2016-08-16 | Alternative Packaging Solutions Llc | One turn actuated duration spray pump mechanism |
EP2859959B1 (fr) * | 2013-10-14 | 2019-08-07 | Yonwoo Co., Ltd. | Distributeur avec réaspiration du contenu restant dans l'orifice de la buse |
CN104283344A (zh) * | 2014-05-28 | 2015-01-14 | 莱克电气股份有限公司 | 一种转子及其加工装配方法 |
US9839930B2 (en) | 2015-06-09 | 2017-12-12 | The Procter & Gamble Company | Flushing dispensers for delivering a consistent consumer experience |
US9550200B2 (en) | 2014-06-09 | 2017-01-24 | The Procter & Gamble Company | Dispensers for delivering a consistent consumer experience |
DE202014103981U1 (de) * | 2014-08-26 | 2015-11-30 | Rpc Bramlage Gmbh | Fingerspraypumpe |
FR3100724B1 (fr) * | 2019-09-17 | 2023-03-24 | Aptar France Sas | Pompe à précompression haute pression |
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DE1302372C2 (de) * | 1967-01-17 | 1978-06-08 | Pfeiffer Zerstäuber-Vertriebsgesellschaft mbH & Co KG, 7760 Radolfzell | In einem gefaess eingebaute einfachwirkende handbetaetigte schubkolbenpumpe |
FR2097353A5 (fr) * | 1970-07-03 | 1972-03-03 | Step | |
US4087025A (en) * | 1976-12-20 | 1978-05-02 | Wolf Steiman | Leakproof pump for hand-held dispensers |
FR2403465A2 (fr) * | 1977-09-16 | 1979-04-13 | Valois Sa | Pompe manuelle a piston pour distribution ou pulverisation |
IT1092596B (it) * | 1978-02-09 | 1985-07-12 | Ruscitti Tommaso | Pompetta a mano per dispensare liquidi micronizzati a pressione prestabilita |
US5046644A (en) * | 1989-11-27 | 1991-09-10 | American Dispensing Systems Inc. | Atomizing fluid dispenser one |
US5147073A (en) * | 1991-02-11 | 1992-09-15 | Spruhventile Gmbh | Fluid pump dispenser for pharmaceutical use |
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1992
- 1992-01-20 FR FR9200559A patent/FR2686377B1/fr not_active Expired - Fee Related
-
1993
- 1993-01-19 US US08/256,549 patent/US5482188A/en not_active Expired - Fee Related
- 1993-01-19 JP JP51220993A patent/JP3265347B2/ja not_active Expired - Fee Related
- 1993-01-19 DE DE69300399T patent/DE69300399T2/de not_active Expired - Fee Related
- 1993-01-19 WO PCT/FR1993/000046 patent/WO1993013873A1/fr active IP Right Grant
- 1993-01-19 EP EP93904092A patent/EP0623060B1/fr not_active Expired - Lifetime
Non-Patent Citations (1)
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015191490A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Lavage de distributeurs pour délivrer une expérience utilisateur cohérente |
WO2015191496A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Lavage de distributeurs pour délivrer une expérience utilisateur cohérente |
WO2015191518A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Articles diffusant des parfums de longue durée |
WO2015191492A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Nettoyage de distributeurs pour délivrer une expérience utilisateur cohérente |
WO2015191515A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Distributeur pourvu de deux réservoirs |
WO2015191495A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Vidange de distributeurs garantissant à l'utilisateur une utilisation compatible |
WO2015191494A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Distributeurs servant à apporter au consommateur une expérience cohérente |
WO2015191491A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Rinçage de distributeurs pour fournir à l'utilisateur une régularité d'utilisation |
WO2015191517A1 (fr) | 2014-06-09 | 2015-12-17 | The Procter & Gamble Company | Articles permettant d'obtenir des parfums persistants |
WO2017044083A1 (fr) | 2015-09-09 | 2017-03-16 | The Procter & Gamble Company | Distributeurs de distribution de microcapsules |
WO2017044084A1 (fr) | 2015-09-09 | 2017-03-16 | The Procter & Gamble Company | Distributeurs de microcapsules |
WO2017044087A1 (fr) | 2015-09-09 | 2017-03-16 | The Procter & Gamble Company | Distributeurs de microcapsules |
WO2017044085A1 (fr) | 2015-09-09 | 2017-03-16 | The Procter & Gamble Company | Dispositifs de distribution de micro-capsules |
Also Published As
Publication number | Publication date |
---|---|
US5482188A (en) | 1996-01-09 |
FR2686377A1 (fr) | 1993-07-23 |
DE69300399T2 (de) | 1996-04-18 |
EP0623060B1 (fr) | 1995-08-23 |
WO1993013873A1 (fr) | 1993-07-22 |
JPH07503927A (ja) | 1995-04-27 |
JP3265347B2 (ja) | 2002-03-11 |
DE69300399D1 (de) | 1995-09-28 |
FR2686377B1 (fr) | 1994-03-25 |
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