EP0220027A2 - Dispensers for viscous materials - Google Patents
Dispensers for viscous materials Download PDFInfo
- Publication number
- EP0220027A2 EP0220027A2 EP86307842A EP86307842A EP0220027A2 EP 0220027 A2 EP0220027 A2 EP 0220027A2 EP 86307842 A EP86307842 A EP 86307842A EP 86307842 A EP86307842 A EP 86307842A EP 0220027 A2 EP0220027 A2 EP 0220027A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- barrel
- dispenser
- nozzle holder
- aperture
- 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.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/00503—Details of the outlet element
- B05C17/00516—Shape or geometry of the outlet orifice or the outlet element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/00586—Means, generally located near the nozzle, for piercing or perforating the front part of a cartridge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/00596—The liquid or other fluent material being supplied from a rigid removable cartridge having no active dispensing means, i.e. the cartridge requiring cooperation with means of the handtool to expel the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
- B05C17/0116—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like characterised by the piston driving means
- B05C17/012—Stepwise advancing mechanism, e.g. pawl and ratchets
- B05C17/0123—Lever actuated
Definitions
- This invention relates to dispensers for viscous materials which may be of a thick liquid nature or of a pasty nature and is particularly suitable for dispensers of mastic caulking materials.
- Various constructions of dispensers for viscous materials are known and two particular examples are those shown in GBl2643llA and GBl58938lA.
- the gun mechanism comprises a body in which moves a rod attached to the piston and carrying a mechanism by which the rod may be advanced stepwise by successive operation of a trigger-like member.
- the second specification describes a dispenser having a barrel in which is contained a cartridge having an integral nozzle at one end and an open end at the other end and the dispenser provides means for controlling the admission of compressed air to the open end to express the contents of the cartridge out of the nozzle at the other end.
- Guns similar to the first described are also available on the market in which the barrel is open-ended and is provided with a removable nozzle assembly comprising a cap which is screwed onto the end of the barrel, a metal nozzle holder which is secured by machine screws into an aperture in the cap and a metal nozzle which is screwed into an aperture in the nozzle holder.
- the latter is mechanically satisfactory but is expensive to produce and is heavy.
- a more serious disadvantage is that it is difficult and time consuming to disassemble for cleaning, thorough cleaning being essential for satisfactory operation of the dispenser. It is an object of the present invention to provide a nozzle assembly for a dispenser of viscous material which is economical to produce and which can be disassembled and reassembled for cleaning rapidly and easily.
- a dispenser for viscous materials comprises a barrel for the material, a discharge nozzle assembly at one end of the barrel, and means for expressing the material from the barrel through the nozzle assembly, the nozzle assembly comprising: an apertured end wall to the barrel; a nozzle holder having a bore therethrough, a first portion which will pass through the aperture in the end wall, a second portion affording a shoulder which will abut the perimeter of the aperture, a spring biased detent which is radially retractable to permit the first portion of the nozzle holder to pass through the aperture and which is biased to extend radially outwards to retain the nozzle holder after such passage, and means for retaining a nozzle within the bore; and a nozzle which, when retained by the retaining means, prevents retraction of the detents.
- the or each detent is made integral with at least the first portion of the nozzle holder, the first portion being made of a resilient material to afford the spring bias.
- the nozzle may be retained in the nozzle holder in various ways but is preferably screwed into the bore thereof.
- the end wall of the barrel is afforded by a cap retainable on the barrel, for example by a multi-start screwthread.
- the nozzle assembly of the invention may be applied to dispensers of various kinds, for example those in which a piston is advanced mechanically as in the aforesaid GBl2643ll and those where the viscous material is pressurized by compressed air as in the aforesaid GBl58938l.
- a piston is advanced along the barrel the face of the piston directed towards the nozzle end and the end wall of the barrel are preferably of complementary shape so that when the piston abuts the end wall any viscous material remaining within the barrel is in direct communication with the nozzle, i.e. there are no dead spaces and the only material remaining within the barrel is adjacent the nozzle.
- This feature may be used independently of the nozzle assembly described above but where such a nozzle assembly is used the piston preferably comes into contact with the nozzle holder so that the only viscous material left in the dispenser when such contact occurs is within the nozzle holder and the nozzle so that when these parts are removed no viscous material remains within the barrel. If the barrel is then refilled without cleaning of the nozzle assembly the viscous material within the nozzle assemby will be expressed before the new material.
- the dispenser shown in the drawings, and particularly in Figure l comprises a barrel l to contain the material to be dispensed and having at one end a nozzle assembly 2 and at the other end an operating mechanism 3 by means of which a piston rod 4 can be advanced step by step along the axis of the barrel l.
- the operating mechanism comprises a body portion 5 having a depending stock 6 which can be grasped in the hand and to which is pivoted a trigger-like member 7.
- a stud ll On the side of the pivot 8 of the trigger member 7 remote from the finger engaging portion 9 thereof is a stud ll which engages an apertured plate l2 through the aperture in which the piston rod 4 passes with some clearance.
- the upper edge of the plate l2 rests against a shoulder l3 on the body portion 5 and the plate l2 is biased to the right as seen in the drawing by means of a compression spring l4.
- the piston rod 4 also passes through a second apertured plate l5 which engages against a boss l6 on the body 5 and which is biased to the right as seen in the drawing by means of a compression spring l7.
- the plate l2 moves forward with the piston rod to advance the piston in the barrel l.
- the rod slides through the plate l5 which is tilted slightly about the stud l6 to allow free movement of the rod 4 through the aperture of the plate.
- the spring l4 returns the plate l2 to the position shown in Figure l, the plate sliding along the rod 4 which is prevented from moving in the reverse direction by the plate l5 resuming the position shown in Figure l and gripping the rod 4.
- the return movement of the plate l2 under the action of the spring l4 also returns the trigger member 7 to the position shown.
- the nozzle assembly 2 is shown in greater detail in Figures 2, 3 and 4.
- Figure 2 also shows the piston 2l on the end of the piston rod 4.
- the left hand end of the barrel is closed by an apertured cap member 22 which has a two-start female screw thread which may be screwed onto a two-start male screw thread 24 on the end of the barrel l.
- the outer forward and peripheral surfaces of the end cap 22 are formed with recesses 25 which assist gripping of the cap during threading and unthreading and also have weight-reducing and decorative purposes.
- the nozzle assembly also includes a nozzle holder 27 having a first cylindrical portion 28 the outside diameter of which is such that it can pass through an aperture 3l in the end cap 22 and a second main body portion 29.
- a flange 32 on the body portion 29 engages the inner axially facing wall 33 of the end cap 22 and radial location is afforded by a cylindrial surface 34 on the body portion of the nozzle holder engaging the perimeter of the aperture 3l.
- the nozzle holder is held in position in the aperture 3l in the end cap 22 by a pair of spring biased detents 4l, 42 which are formed integrally with the cylindrical portion 28 of the nozzle holder.
- Each of the detents 4l and 42 is formed by four parallel generally triangular walls 43 projecting approximately radially outwardly from the cylindrical wall 28 and connected together at the right hand end as seen in Figure 2 by a generally radially extending wall 44.
- Extending along each side of each of each of the detents 4l, 42 is an axial slit 45 which passes through the cylindrical wall 28.
- the slits 45 on each side of each detent are connected by a circumferentially extending slit 46.
- the detents are thus connected to the remainder of the nozzle holder only at their left hand ends as seen in Figure 2 and they can be moved towards one another by flexing of the portions of the wall 29 adjacent the points of connection of the detents.
- a nozzle 5l comprises a first cylindrical portion 52 formed with a male screwthread 53 at one end, a tapering portion 54 and a second cylindrical portion 55 having a diagonal cut off 56 providing the discharge orifice of the nozzle.
- the bore of the nozzle holder 27 is formed with a female thread 57 into which the male thread 53 of the nozzle 5l can be screwed.
- the nozzle assembly is assembled as follows.
- the cylindrical wall 28 of the nozzle assembly 27 is entered into the aperture 3l in the end cap 22, the detents 4l and 42 passing through notches 6l and 62 in the periphery of the aperture 3l.
- the outer edges of the walls 43 of the detents 4l and 42 slide along the inner edges of the notches 6l and 62 and the detents are squeezed inwardly, resiliently deforming the portions of the cylindrical wall 28 providing the connections between the detents 4l, 42 and the remainder of the nozzle holder 27.
- the detents After the detents have passed completely through the aperture 3l they spring outwards and their end faces 63 engage the outer surface 64 of the end cap 22 to retain the nozzle holder 27 firmly in position in the end cap 22.
- the nozzle 5l is then screwed into the nozzle holder 27.
- the outer diameter of the cylindrical portion 52 of the nozzle 5l is only very slightly smaller than the inner diameter of the cylindrical portion 28 of the nozzle holder 27 so that once the nozzle 5l is in position it is not possible move the detents 4l and 42 radially inwards to release the nozzle holder 27.
- the nozzle assembly may be disassmbled for cleaning. This is effected by removing the assembly from the barrel l by unscrewing the cap 22, unscrewing the nozzle 5l from the nozzle holder 27 and then separating the nozzle holder 27 from the cap 22 by manually squeezing the two detents 4l, 42 towards each other between the finger and thumb until the detents can be passed through the notches 6l, 62 and the nozzle holder removed from the aperture 3l.
- the various components of the nozzle assembly 27 can them be placed in a bath of solvent together with the piston 2l which can be unscrewed from the piston rod 4.
- the right hand end of the nozzle holder 27 is formed with a bead 65 the outer circumferential surface of which is complementary to a surface 66 on the dished interior of the piston 2l. Accordingly when the nozzle assembly is assembled on the barrel and the piston is advanced to its maximum extent to the left until it abuts the nozzle holder 27 the only space remaining for the contents of the dispenser is within the nozzle holder 27 and the nozzle 5l and there are no dead spaces in which the material can remain. If the piston is then retracted and then the barrel is refilled, the new material cannot be driven out of the nozzle until the remaining old material contained in the nozzle and the nozzle holder has passed out of the nozzle holder and the nozzle.
- the piston 2l, the end cap 22 and the nozzle holder 27 (with the exception of the O ring 36) are made of the acetal plastic sold under the trade mark DELRIN. This material is extremely stable in the presence of the majority of solvents such as are used for cleaning mastics and other materials of the kind which are used in such guns.
- the O ring 36 is made of the polyester elastomer plastic sold by DuPont under the trade mark HYTREL which is also resistant to the majority of solvents.
- the nozzle 5l is made of high density polyethylene.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Coating Apparatus (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
Description
- This invention relates to dispensers for viscous materials which may be of a thick liquid nature or of a pasty nature and is particularly suitable for dispensers of mastic caulking materials. Various constructions of dispensers for viscous materials are known and two particular examples are those shown in GBl2643llA and GBl58938lA. In the first of these the viscous material is contained in a cartridge having a cylindrical body portion or barrel and an integral nozzle at one end and containing a piston which is advanced by a gun mechanism to which the cartridge may be attached. The gun mechanism comprises a body in which moves a rod attached to the piston and carrying a mechanism by which the rod may be advanced stepwise by successive operation of a trigger-like member. The second specification describes a dispenser having a barrel in which is contained a cartridge having an integral nozzle at one end and an open end at the other end and the dispenser provides means for controlling the admission of compressed air to the open end to express the contents of the cartridge out of the nozzle at the other end. Guns similar to the first described are also available on the market in which the barrel is open-ended and is provided with a removable nozzle assembly comprising a cap which is screwed onto the end of the barrel, a metal nozzle holder which is secured by machine screws into an aperture in the cap and a metal nozzle which is screwed into an aperture in the nozzle holder. The latter is mechanically satisfactory but is expensive to produce and is heavy. A more serious disadvantage is that it is difficult and time consuming to disassemble for cleaning, thorough cleaning being essential for satisfactory operation of the dispenser. It is an object of the present invention to provide a nozzle assembly for a dispenser of viscous material which is economical to produce and which can be disassembled and reassembled for cleaning rapidly and easily.
- According to one aspect of the present invention, a dispenser for viscous materials comprises a barrel for the material, a discharge nozzle assembly at one end of the barrel, and means for expressing the material from the barrel through the nozzle assembly, the nozzle assembly comprising: an apertured end wall to the barrel; a nozzle holder having a bore therethrough, a first portion which will pass through the aperture in the end wall, a second portion affording a shoulder which will abut the perimeter of the aperture, a spring biased detent which is radially retractable to permit the first portion of the nozzle holder to pass through the aperture and which is biased to extend radially outwards to retain the nozzle holder after such passage, and means for retaining a nozzle within the bore; and a nozzle which, when retained by the retaining means, prevents retraction of the detents.
- In a preferred construction there is a second detent identical to and diametrically opposite to the first.
- Preferably the or each detent is made integral with at least the first portion of the nozzle holder, the first portion being made of a resilient material to afford the spring bias. The nozzle may be retained in the nozzle holder in various ways but is preferably screwed into the bore thereof. Preferably the end wall of the barrel is afforded by a cap retainable on the barrel, for example by a multi-start screwthread.
- The nozzle assembly of the invention may be applied to dispensers of various kinds, for example those in which a piston is advanced mechanically as in the aforesaid GBl2643ll and those where the viscous material is pressurized by compressed air as in the aforesaid GBl58938l. Where a piston is advanced along the barrel the face of the piston directed towards the nozzle end and the end wall of the barrel are preferably of complementary shape so that when the piston abuts the end wall any viscous material remaining within the barrel is in direct communication with the nozzle, i.e. there are no dead spaces and the only material remaining within the barrel is adjacent the nozzle. This feature may be used independently of the nozzle assembly described above but where such a nozzle assembly is used the piston preferably comes into contact with the nozzle holder so that the only viscous material left in the dispenser when such contact occurs is within the nozzle holder and the nozzle so that when these parts are removed no viscous material remains within the barrel. If the barrel is then refilled without cleaning of the nozzle assembly the viscous material within the nozzle assemby will be expressed before the new material.
- The invention may be carried into practice in various ways but one dispensing device for viscous materials and embodying the invention will now be described by way of example with reference to the accompanying drawings in which:
- Figure l is a side elevation of the dispenser;
- Figure 2 is an exploded longitudinal section of the nozzle end of the dispenser shown in Figure l;
- Figure 3 is an end elevation of the end cap of the nozzle assembly vieweed in the direction of the
plane 33 shown in Figure 2; and - Figure 4 is an end elevation of the nozzle holder of the nozzle assembly viewed in the direction of the
plane 44 in Figure 2. - The dispenser shown in the drawings, and particularly in Figure l, comprises a barrel l to contain the material to be dispensed and having at one end a nozzle assembly 2 and at the other end an operating mechanism 3 by means of which a
piston rod 4 can be advanced step by step along the axis of the barrel l. The operating mechanism comprises a body portion 5 having a dependingstock 6 which can be grasped in the hand and to which is pivoted a trigger-like member 7. On the side of thepivot 8 of the trigger member 7 remote from thefinger engaging portion 9 thereof is a stud ll which engages an apertured plate l2 through the aperture in which thepiston rod 4 passes with some clearance. The upper edge of the plate l2 rests against a shoulder l3 on the body portion 5 and the plate l2 is biased to the right as seen in the drawing by means of a compression spring l4. Thepiston rod 4 also passes through a second apertured plate l5 which engages against a boss l6 on the body 5 and which is biased to the right as seen in the drawing by means of a compression spring l7. Although the mode of operation of such a mechanism is well known in this art it will be briefly described. When the trigger member 7 is squeezed in the hand towards thestock 6 the stud ll tilts the plate l2 about its point of engagement with the abutment l3 until the upper and lower extremities of the aperture in the plate grip the upper and lower surfaces of thepiston rod 4. On continued backward movement of the trigger member 7, the plate l2 moves forward with the piston rod to advance the piston in the barrel l. During this forward movement of thepiston rod 4, the rod slides through the plate l5 which is tilted slightly about the stud l6 to allow free movement of therod 4 through the aperture of the plate. On release of the trigger member 7, the spring l4 returns the plate l2 to the position shown in Figure l, the plate sliding along therod 4 which is prevented from moving in the reverse direction by the plate l5 resuming the position shown in Figure l and gripping therod 4. The return movement of the plate l2 under the action of the spring l4 also returns the trigger member 7 to the position shown. - The nozzle assembly 2 is shown in greater detail in Figures 2, 3 and 4. Figure 2 also shows the piston 2l on the end of the
piston rod 4. The left hand end of the barrel is closed by anapertured cap member 22 which has a two-start female screw thread which may be screwed onto a two-startmale screw thread 24 on the end of the barrel l. As can be seen in Figure 3, the outer forward and peripheral surfaces of theend cap 22 are formed withrecesses 25 which assist gripping of the cap during threading and unthreading and also have weight-reducing and decorative purposes. - The nozzle assembly also includes a
nozzle holder 27 having a firstcylindrical portion 28 the outside diameter of which is such that it can pass through an aperture 3l in theend cap 22 and a secondmain body portion 29. Aflange 32 on thebody portion 29 engages the inner axially facingwall 33 of theend cap 22 and radial location is afforded by acylindrial surface 34 on the body portion of the nozzle holder engaging the perimeter of the aperture 3l. When the nozzle assembly is assembled onto the barrel l, the right-hand axially facing surface of theflange 32 engages thecircumferential end wall 35 of the barrel and an O-ring 36 located in agroove 37 in thebody portion 29 of the nozzle holder seals against the inner surface of the barrel l. - The nozzle holder is held in position in the aperture 3l in the
end cap 22 by a pair of springbiased detents 4l, 42 which are formed integrally with thecylindrical portion 28 of the nozzle holder. Each of thedetents 4l and 42 is formed by four parallel generallytriangular walls 43 projecting approximately radially outwardly from thecylindrical wall 28 and connected together at the right hand end as seen in Figure 2 by a generally radially extendingwall 44. Extending along each side of each of each of thedetents 4l, 42 is anaxial slit 45 which passes through thecylindrical wall 28. Theslits 45 on each side of each detent are connected by a circumferentially extendingslit 46. The detents are thus connected to the remainder of the nozzle holder only at their left hand ends as seen in Figure 2 and they can be moved towards one another by flexing of the portions of thewall 29 adjacent the points of connection of the detents. - A nozzle 5l comprises a first
cylindrical portion 52 formed with amale screwthread 53 at one end, a taperingportion 54 and a secondcylindrical portion 55 having a diagonal cut off 56 providing the discharge orifice of the nozzle. The bore of thenozzle holder 27 is formed with afemale thread 57 into which themale thread 53 of the nozzle 5l can be screwed. - The nozzle assembly is assembled as follows. The
cylindrical wall 28 of thenozzle assembly 27 is entered into the aperture 3l in theend cap 22, thedetents 4l and 42 passing throughnotches 6l and 62 in the periphery of the aperture 3l. As the nozzle holder is moved further through the aperture 3l the outer edges of thewalls 43 of thedetents 4l and 42 slide along the inner edges of thenotches 6l and 62 and the detents are squeezed inwardly, resiliently deforming the portions of thecylindrical wall 28 providing the connections between thedetents 4l, 42 and the remainder of thenozzle holder 27. After the detents have passed completely through the aperture 3l they spring outwards and their end faces 63 engage theouter surface 64 of theend cap 22 to retain thenozzle holder 27 firmly in position in theend cap 22. The nozzle 5l is then screwed into thenozzle holder 27. The outer diameter of thecylindrical portion 52 of the nozzle 5l is only very slightly smaller than the inner diameter of thecylindrical portion 28 of thenozzle holder 27 so that once the nozzle 5l is in position it is not possible move thedetents 4l and 42 radially inwards to release thenozzle holder 27. - After one or more fillings of the barrel l have been expressed, the nozzle assembly may be disassmbled for cleaning. This is effected by removing the assembly from the barrel l by unscrewing the
cap 22, unscrewing the nozzle 5l from thenozzle holder 27 and then separating thenozzle holder 27 from thecap 22 by manually squeezing the twodetents 4l, 42 towards each other between the finger and thumb until the detents can be passed through thenotches 6l, 62 and the nozzle holder removed from the aperture 3l. The various components of thenozzle assembly 27 can them be placed in a bath of solvent together with the piston 2l which can be unscrewed from thepiston rod 4. - It will be noted from Figure 2 that the right hand end of the
nozzle holder 27 is formed with abead 65 the outer circumferential surface of which is complementary to asurface 66 on the dished interior of the piston 2l. Accordingly when the nozzle assembly is assembled on the barrel and the piston is advanced to its maximum extent to the left until it abuts thenozzle holder 27 the only space remaining for the contents of the dispenser is within thenozzle holder 27 and the nozzle 5l and there are no dead spaces in which the material can remain. If the piston is then retracted and then the barrel is refilled, the new material cannot be driven out of the nozzle until the remaining old material contained in the nozzle and the nozzle holder has passed out of the nozzle holder and the nozzle. - The piston 2l, the
end cap 22 and the nozzle holder 27 (with the exception of the O ring 36) are made of the acetal plastic sold under the trade mark DELRIN. This material is extremely stable in the presence of the majority of solvents such as are used for cleaning mastics and other materials of the kind which are used in such guns. TheO ring 36 is made of the polyester elastomer plastic sold by DuPont under the trade mark HYTREL which is also resistant to the majority of solvents. The nozzle 5l is made of high density polyethylene.
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08525035A GB2181490B (en) | 1985-10-10 | 1985-10-10 | Dispensers for viscous materials |
GB8525035 | 1985-10-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0220027A2 true EP0220027A2 (en) | 1987-04-29 |
EP0220027A3 EP0220027A3 (en) | 1987-09-02 |
Family
ID=10586497
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86307842A Withdrawn EP0220027A3 (en) | 1985-10-10 | 1986-10-10 | Dispensers for viscous materials |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0220027A3 (en) |
JP (1) | JPS62163766A (en) |
AU (1) | AU6390486A (en) |
DK (1) | DK480886A (en) |
GB (1) | GB2181490B (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0380792A2 (en) * | 1988-12-13 | 1990-08-08 | Günther Dipl.-Ing. Knieriem | Discharge device |
EP0741260A1 (en) * | 1995-05-01 | 1996-11-06 | Eastman Kodak Company | Valve assembly and method for dispensing gelatinous materials |
ES2221539A1 (en) * | 2002-10-02 | 2004-12-16 | Ernesto Antelo Pensado | Articulated rigid screw cap for a tapered neck bottle includes a suction booster facilitating pouring of viscous liquid under controlled conditions |
WO2005107961A1 (en) * | 2004-05-12 | 2005-11-17 | Teais, S.A. | Articulated cap for the application of viscous fluids |
DE102005002850A1 (en) * | 2005-01-20 | 2006-08-10 | Kettenbach Gmbh & Co. Kg | Device for storing and discharging fluid substances |
CN104549926A (en) * | 2015-01-15 | 2015-04-29 | 中江志诚钢化玻璃制品有限公司 | Device capable facilitating operator to glue |
US10863985B2 (en) | 2012-05-07 | 2020-12-15 | Covidien Lp | Surgical instrument with articulation mechanism |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8615152D0 (en) * | 1986-06-20 | 1986-11-26 | Royal Ordnance Plc | Extrusion of explosive materials |
GB2303814B (en) * | 1995-07-28 | 1997-10-01 | Lii Liang Kuen | C-clamps |
JP2009239535A (en) * | 2008-03-26 | 2009-10-15 | Nec Lighting Ltd | Detection circuit, and discharge tube driver |
WO1990007280A1 (en) * | 2010-07-13 | 1990-07-12 | Victor Manuel Pracas | Confectionery storage and dispensing device |
CN102847647A (en) * | 2012-08-23 | 2013-01-02 | 苏州华爱电子有限公司 | Glue saving glue gun |
JP2016050431A (en) * | 2014-08-29 | 2016-04-11 | Toto株式会社 | Seal method between floor and wall of wash place in bathroom |
JP2016050432A (en) * | 2014-08-29 | 2016-04-11 | Toto株式会社 | Caulking material supply nozzle |
CN104549927A (en) * | 2015-01-15 | 2015-04-29 | 中江志诚钢化玻璃制品有限公司 | Device capable of improving use stability |
CN106179897A (en) * | 2016-07-08 | 2016-12-07 | 彭东林 | Thruster structure in a kind of glue stick |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2420203A (en) * | 1944-07-10 | 1947-05-06 | Vital Products Mfg Company | Dispensing apparatus for plastic material |
USRE26180E (en) * | 1967-04-04 | Dispensing gun | ||
US4042174A (en) * | 1976-06-21 | 1977-08-16 | Vaughn Alvie G | Nozzle adapter |
EP0046664A1 (en) * | 1980-08-25 | 1982-03-03 | Nordson Corporation | Extrusion nozzle assembly and hot melt adhesive dispenser incorporating same |
-
1985
- 1985-10-10 GB GB08525035A patent/GB2181490B/en not_active Expired
-
1986
- 1986-10-08 DK DK480886A patent/DK480886A/en not_active Application Discontinuation
- 1986-10-09 JP JP61239403A patent/JPS62163766A/en active Pending
- 1986-10-10 AU AU63904/86A patent/AU6390486A/en not_active Abandoned
- 1986-10-10 EP EP86307842A patent/EP0220027A3/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE26180E (en) * | 1967-04-04 | Dispensing gun | ||
US2420203A (en) * | 1944-07-10 | 1947-05-06 | Vital Products Mfg Company | Dispensing apparatus for plastic material |
US4042174A (en) * | 1976-06-21 | 1977-08-16 | Vaughn Alvie G | Nozzle adapter |
EP0046664A1 (en) * | 1980-08-25 | 1982-03-03 | Nordson Corporation | Extrusion nozzle assembly and hot melt adhesive dispenser incorporating same |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0380792A2 (en) * | 1988-12-13 | 1990-08-08 | Günther Dipl.-Ing. Knieriem | Discharge device |
EP0380792A3 (en) * | 1988-12-13 | 1991-04-03 | Günther Dipl.-Ing. Knieriem | Discharge device |
EP0741260A1 (en) * | 1995-05-01 | 1996-11-06 | Eastman Kodak Company | Valve assembly and method for dispensing gelatinous materials |
US5632412A (en) * | 1995-05-01 | 1997-05-27 | Eastman Kodak Company | Valve assembly and method for dispensing gelatinous materials |
ES2221539A1 (en) * | 2002-10-02 | 2004-12-16 | Ernesto Antelo Pensado | Articulated rigid screw cap for a tapered neck bottle includes a suction booster facilitating pouring of viscous liquid under controlled conditions |
WO2005107961A1 (en) * | 2004-05-12 | 2005-11-17 | Teais, S.A. | Articulated cap for the application of viscous fluids |
DE102005002850A1 (en) * | 2005-01-20 | 2006-08-10 | Kettenbach Gmbh & Co. Kg | Device for storing and discharging fluid substances |
DE102005002850B4 (en) * | 2005-01-20 | 2009-09-17 | Kettenbach Gmbh & Co. Kg | Device for storing and discharging fluid substances |
US10863985B2 (en) | 2012-05-07 | 2020-12-15 | Covidien Lp | Surgical instrument with articulation mechanism |
CN104549926A (en) * | 2015-01-15 | 2015-04-29 | 中江志诚钢化玻璃制品有限公司 | Device capable facilitating operator to glue |
Also Published As
Publication number | Publication date |
---|---|
GB8525035D0 (en) | 1985-11-13 |
DK480886A (en) | 1987-04-11 |
GB2181490A (en) | 1987-04-23 |
JPS62163766A (en) | 1987-07-20 |
DK480886D0 (en) | 1986-10-08 |
GB2181490B (en) | 1988-11-02 |
AU6390486A (en) | 1987-04-16 |
EP0220027A3 (en) | 1987-09-02 |
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