WO1995000253A1 - Chambre de pompe pouvant s'aplatir suivant un schema predetermine - Google Patents

Chambre de pompe pouvant s'aplatir suivant un schema predetermine Download PDF

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Publication number
WO1995000253A1
WO1995000253A1 PCT/US1994/004254 US9404254W WO9500253A1 WO 1995000253 A1 WO1995000253 A1 WO 1995000253A1 US 9404254 W US9404254 W US 9404254W WO 9500253 A1 WO9500253 A1 WO 9500253A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump chamber
pump device
side wall
collapsible
predetermined pattern
Prior art date
Application number
PCT/US1994/004254
Other languages
English (en)
Inventor
Robert James Peterson
Robert Edward Stahley
Original Assignee
The Procter & Gamble Company
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US08/082,001 external-priority patent/US5303867A/en
Application filed by The Procter & Gamble Company filed Critical The Procter & Gamble Company
Priority to DE69411919T priority Critical patent/DE69411919T2/de
Priority to AU65595/94A priority patent/AU678463B2/en
Priority to JP7502780A priority patent/JPH08511723A/ja
Priority to KR1019950705977A priority patent/KR960703354A/ko
Priority to CA002165315A priority patent/CA2165315C/fr
Priority to EP94913425A priority patent/EP0705141B1/fr
Priority to BR9406962A priority patent/BR9406962A/pt
Publication of WO1995000253A1 publication Critical patent/WO1995000253A1/fr

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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
    • 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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • 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
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • 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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves
    • 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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1032—Pumps having a pumping chamber with a deformable wall actuated without substantial movement of the nozzle in the direction of the pressure 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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1033—Pumps having a pumping chamber with a deformable wall the deformable wall, the inlet and outlet valve elements being integrally formed, e.g. moulded
    • 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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1035—Pumps having a pumping chamber with a deformable wall the pumping chamber being a bellow
    • 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
    • B05B11/1059—Means for locking a pump or its actuation means in a fixed 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
    • B05B11/1042—Components or details
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure
    • 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
    • B05B11/1077—Springs characterised by a particular shape or material
    • 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

Definitions

  • the present invention relates to manually compressible pump chambers for use with consumer product liquid dispensing pump devices.
  • liquid dispensing pump devices for use with consumer product containers are many and varied. Such dispensing pumps may be utilized to deliver liquids as a foam, a spray, or a liquid stream (e.g., as with moisturizing lotions), for example.
  • liquid dispensing pump devices utilize a piston and cylinder pump chamber.
  • Such pump chambers require that a liquid tight moving seal be maintained between the piston and the cylinder. Disadvantages are commonly associated with this liquid tight seal requirement. For example, a relatively large amount of friction is generated as the piston moves against the cylinder, since these parts must fit tightly to form the seal.
  • the parts themselves must be manufactured within tight tolerances such that the parts fit correctly to form the seal. Moreover, the wear caused by the friction can deteriorate this seal over time, reducing the efficiency of the pump. Furthermore, these piston and cylinder dispensing devices have generally been designed without significant effort to reduce the number of parts and overall cost.
  • liquid dispensing pump devices which utilize pump chambers with collapsible walls.
  • balloon type pump chambers have been utilized.
  • flexible, resilient bellows have been utilized as collapsible pump chambers in liquid dispensing pump devices.
  • Such bellows-type pumps permit the pump chamber to expand and contract in volume without the disadvantages associated with the moving seal required in piston and cylinder pumps.
  • the bellows can replace the piston, the cylinder and the spring; thereby reducing molding and assembly costs.
  • a collapsible pump chamber for use in a manually actuated liquid dispensing pump device.
  • the collapsible pump chamber includes a pleated annular side wall defining an internal volumetric portion of the pump chamber.
  • the pleated annular side wall has a structure adapted to collapse in a predetermined pattern as the pump device is actuated.
  • the predetermined pattern of collapse results in an initially relatively small volumetric change in the internal volumetric portion per given stroke length followed by an increased volumetric change in the internal volumetric portion per given stroke length.
  • a manually operated liquid dispensing device in accordance with another aspect of the present invention.
  • the dispensing device includes a housing for sealingly mounting the dispensing device to a supply container.
  • the housing includes a portion of a liquid passage providing fluid communication from the supply container downstream to the discharge orifice.
  • An inlet valve is located within the liquid passage. The inlet valve is closed to prevent liquid flow therethrough during periods of positive downstream pressure and is open during periods of negative downstream pressure.
  • An outlet valve is located within the liquid passage, the outlet valve is open to permit liquid flow therethrough during periods of positive upstream pressure and is closed during periods of negative upstream pressure.
  • a collapsible pump chamber defines a portion of the liquid passage downstream of the inlet valve and upstream of the outlet valve.
  • the collapsible pump chamber has a collapsing side wall defining a portion of the pump chamber.
  • the collapsing side wall has a structure adapted to collapse in a predetermined pattern as the pump device is actuated.
  • Figure 1 is an expanded perspective view from above of a particularly preferred embodiment of a manually collapsible pump chamber for use in a liquid dispensing pump of the present invention
  • Figure 2 is an expanded perspective view from below of the manually collapsible pump chamber and liquid dispensing pump of Figure 1
  • Figure 3 is a cross-sectional view taken along the center line of the assembled liquid dispensing pump device of Figures 1 and 2 (with the tamper evident tab intact and shipping seal closed);
  • Figure 4 is a cross sectional view, similar to Figure 3 with the tamper evident tab removed and the shipping seal open;
  • Figure 5 is a cross sectional view, similar to Figure 3, of the pump of Figure 1 in operation, during the downstroke as the collapsible pump chamber collapses;
  • Figure 6 is a cross sectional view, similar to Figure 3, of the pump of Figure 1 in operation, during the upstroke as the collapsible pump chamber expands;
  • Figure 7 is a cross-sectional view, similar to Figure 3, of another preferred collapsible pump chamber of the present invention capable of pumping relatively large volumes in another liquid dispensing pump device;
  • Figure 8 is a cross-sectional view, similar to Figure 3, of the collapsible pump chamber of Figure 7 in the liquid dispensing pump device of Figure 1.
  • the present invention provides a manually compressible pump chamber 40 for use in a liquid dispensing pump device, indicated generally as 20.
  • This dispensing pump device 20 is particularly useful in conjunction with a liquid product supply container 22 (seen partially in Figure 3).
  • the illustrated liquid dispensing pump 20 basically includes an upper housing 24, a lower housing 26, an outlet valve member 30, and inlet vent member 34, a diptube 38, and a collapsible pump chamber 40.
  • collapsible pump chamber is defined as a pump chamber delineated - at least partially - by a flexible wall which moves in response to a manual compressive force in such a way that the volume within the pump chamber is reduced without sliding friction between any components delineating the pump chamber.
  • collapsible pump chambers may include balloon-like diaphragms and bladders made from elastomeric materials such as thermoplastic elastomers, elastomeric thermosets (including rubber), or the like.
  • the collapsible pump chamber may include a helical metal or plastic spring surrounding (or covered by) an elastic material; creating an enclosed pump chamber.
  • the illustrated and preferred collapsible pump chamber is a bellows 40; i.e., a generally cylindrical, hollow structure with accordion-type walls. Bellows are preferred, for example, because they can be made resilient to act like a spring; eliminating the need for a spring.
  • the collapsible pump chamber is designed in such a manner that it collapses according to a predetermined pattern.
  • the manually collapsible pump chamber preferably includes additional integral components.
  • integral is defined as molded, or otherwise formed, as a single unitary part.
  • the upper housing 24 is telescoped onto the lower housing 26 and retained by cooperation between an annular collar 25 and an annular rib 27.
  • the lower housing 26 includes screw threads 28 which operate to sealingly attach the pump device 20 to the container 22.
  • the lower housing 26 may utilize a bayonet-type attachment structure (not seen) such as that described, for example, in U.S. Patent 4,781,311 issued to Dunning et al. on November 1, 1988; or U.S. Patent 3,910,444 issued to Foster on October 7, 1975.
  • the lower housing 26 includes an inlet passage 42 with an inner conical inlet valve seat 35 which cooperates with the inlet valve member 34 to form the inlet valve 34 and 35. Furthermore, the lower housing 26 includes three equally spaced retaining tabs 36 which retain the inlet valve member 34 during operation of the pump device 20, as discussed hereinafter. Alternatively, a ball valve (not seen ) could be utilized.
  • the lower housing 26 also includes a vent opening 37, three equally spaced actuation lugs 44, a cooperating lug 45, and three equally spaced anti-rotation lugs 46. Friction fit onto the inlet passage 42 of the lower housing 26 is a diptube 38 which extends down into the container 22.
  • the upper housing 24 includes an outlet passage 48; terminating in a dispensing opening 50.
  • An inner cylindrical wall 52 is located within the upper housing 24 at an angle to, and connected with the outlet passage 48.
  • the upper housing 24 includes a collar 25 with three equally spaced actuation channels 54, three stops 56, three pairs of tactile lugs 58, a projection 60, and a removable tamper evident tab 62.
  • the phrase "tamper evident” is defined as providing evidence that the pump has been previously actuated; not necessarily that the product has not been tampered with (since the entire pump device may be unscrewed and replaced). Tamper evidence, in this sense is important because it discourages sampling of the product on the store shelf.
  • the housing 24 and 26 could include any tamper evident feature (not seen) known in the art to indicate that there has been removal of the pump device 20 from the container 22.
  • a liquid passage Passing through the housing 24 and 26 is a liquid passage which is delineated by several parts, including the diptube 38, the inlet passage 42 of the lower housing 26, the outlet passage 48 of the upper housing 24, and the collapsible pump chamber 40.
  • the liquid passage provides fluid communication from the distal end of the dip tube 38 within the supply container 22 in a downstream direction to the discharge orifice.
  • downstream is defined as in the direction from the supply container 22 to the discharge orifice 50; and "upstream” is defined as in the direction from the discharge orifice 50 to the supply container 22.
  • the phrase “inlet end” means the upstream end; and the phrase “outlet end” means the downstream end.
  • a portion of this liquid passage is defined by the collapsible pump chamber
  • the collapsible pump chamber 40 has a structure which is flexible such that it can be manually compressed; thereby reducing the volume within the collapsible pump chamber 40.
  • a spring (not seen) may be utilized to help return the collapsible pump chamber 40 to its original shape, the collapsible pump chamber 40 is preferably sufficiently resilient that it returns to its initial shape when the manual compression force is released.
  • the collapsible pump chamber is a bellows 40 with a structure which ensures the bellows 40 collapses along a predetermined pattern.
  • the bellows 40 preferably has several qualities.
  • the bellows 40 should make the pump device easy to actuate. Generally this means having a spring force from about three pounds to about five pounds.
  • the bellows 40 should also have good resiliency with minimal hysterisis and creep.
  • the bellows 40 preferably has good stiffness in the radial direction (hoop strength) to ensure the bellows 40 is not radially deformed under normal operating conditions.
  • the bellows 40 preferably has a good volumetric efficiency; i.e., change in internal volume divided by the total expanded internal volume.
  • Some geometric features which can be utilized to endow the bellows 40 with the appropriate qualities include the diameter of the bellows 40. The larger the diameter the lower the spring force and the lower the radial stiffness. Although lower spring force is generally desirable, lower radial stiffness can be a problem; e.g., the bellows 40 might blow out in a precompression trigger sprayers. Increasing the wall thickness of the pleats will increase radial stiffness but it increases the spring force and results in decreased volumetric efficiency of the bellows. Reducing the pleat angle generally decreases the spring force but decreases the volumetric efficiency.
  • the pleat angle is the aggregate of two angles; the angle above a line normal to the axis and passing through the origin of a pleat and the angle below that line. Preferably, the pleat angle above the normal line is about 30° and the pleat angle below the normal line is about 45° (making removal of the bellows from the core pin easier). Increasing the number of pleats will lower the spring force and lower the volumetric efficiency.
  • the major components of the spring force are the wall thickness and the upper and lower pleat angles while the major component of resiliency is material selection. Consequently, one way to endow the bellows with portions which will collapse first (such as the smaller diameter portions of the illustrated bellows 40) is to utilize thinner walls and more acute pleat angles in these areas. In fact, as seen in Figure 3, the side wall of the illustrated bellows 40 gets gradually thinner from bottom to top. Similarly, the pleat angles get progressively more acute. Thus, this bellows 40 will begin by collapsing on its upper end and dispensing a relatively low volume; giving good control for small doses.
  • the flow rate will gradually increase.
  • Material selection can also help endow the bellows 40 with the appropriate qualities.
  • the material preferably has a Young's modulus below 10,000 psi.
  • the material should enable retention of mechanical properties, be dimensionally stable and be resistant to stress cracking. These properties should be present over time in air and in the presence of the liquid product.
  • trigger sprayers which generally spray acidic or alkaline cleaning products comprised of significant quantities of water the material should not be pH sensitive and should not undergo hydrolysis.
  • Exemplary such materials include polyolefins such as polypropylene, low density polyethylene, very low density polyethylene, ethylene vinyl acetate.
  • Other materials which may be utilized include thermosets (e.g., rubber), and thermoplastic elastomers.
  • Most preferred for trigger sprayers is a high molecular weight ethylene vinyl acetate with a vinyl acetate content between about 10 and 20 perc ⁇ nt.
  • pH and hydrolysis may not be an issue. Instead a low spring force with a high resiliency may be more important. In such cases a low modulus ethylene vinyl acetate or a very low density polyethylene are preferred.
  • the inlet end of the manually compressible pump chamber 40 is attached by friction fit to the generally cylindrical inner wall of the lower housing 26.
  • three equally spaced notches 47 on the inlet end of the bellows 40 cooperate with the three anti-rotation lugs 46 on the lower housing 26.
  • the collapsible pump chamber 40 includes an integral annularly extending flange 64 near its inlet end. This flange 64 seals against the interior surface of the lower housing 26; to form a vent valve 26 and 64.
  • the vent valve 26 and 54 includes the flange 64 which operates as a valve member and the housing 26 which provides the valve seat.
  • the outlet end of the collapsible pump chamber 40 is attached by friction fit to the inner cylindrical wall 52 of the upper housing 24.
  • the outlet end of the collapsible pump chamber 40 includes an elongate channel 66 which has an integral outlet valve seat 32 which cooperates with the outlet valve member 30 to form the outlet valve 30 and 32.
  • the elongate channel 66 also includes an integral outlet opening 68.
  • the inlet valve member 34 and 35 and an outlet valve member 30 and 32 are located within the liquid passage. These valves may be of any type known in the art, including duckbill, ball, poppet or the like.
  • the outlet valve member 30 is a lightweight ball or poppet valve member which provides suckback, as discussed hereinafter.
  • the liquid dispensing pump 20 is in the closed position.
  • the outlet opening 68 of the bellows 40 is misaligned with the outlet passage 48; providing a fluid tight shipping seal.
  • the shipping seal includes several functional elements; e.g., the outlet opening 68 and the cylindrical wall 52 which can be moved relative thereto to seal the outlet opening 68. Therefore, the liquid passage which flows through the diptube 38, inlet passage 42 of the lower housing 26, the bellows 40, and the outlet passage 48 of the upper housing 24 is sealed closed; thereby providing a shipping seal.
  • actuation lugs 44 are misaligned with the actuation channels 54 which prevents actuation of the pump device 20 when the shipping seal is closed. Without this feature, a increase in the pressure within the collapsible pump chamber 40 which might damage the collapsible pump chamber
  • each actuation lug 44 could be caused by attempted actuation of the pump device 20 while the shipping seal is closed.
  • one side of the upper end of each actuation lug 44 is locafed against one end of each stop 56.
  • the other side of each actuation lug 44 is located against one of the tactile lugs 58.
  • the tamper evident tab 62 extends generally horizontally from the upper housing 24 over the top end of the lower housing 26.
  • the illustrated tamper evident tab 62 includes a slot 63 which cooperates with a locking lug 45 to prevent rotation of the upper housing 24 relative to the lower housing 26.
  • the shipping seal cannot be opened without removal of the tamper evident tab 62.
  • the pump device 20 cannot be actuated without removing the tamper evident tab 62.
  • the liquid dispensing pump 20 is in the open position.
  • the upper housing 24 may be rotated relative to the lower housing 26 from the closed position to the open position once the tamper evident tab 62 has been removed.
  • the tamper evident tab 62 is removed by simply rotating it upwardly. This rotation causes the projection 60 to interfere with the tamper evident tab 62; creating a force which pushes the tab 62 away from the upper housing 24. This force causes the tab 62 to tear away from the upper housing 24 along the thinned line connecting the tab 62 to the upper housing 24.
  • each actuation lug 44 moves from a position against one stop 56 to a position 90° away against the adjacent stop 56.
  • each actuation lug 44 moves against the tactile lugs 58 which provide a tactile and/or audible signal that the shipping seal of the dispensing pump device 20 is being moved -first, from the closed position and - second, into the open position.
  • the tactile lugs 58 also help maintain the pump device 20 in the open or closed position through interaction with the actuation lugs 44.
  • the actuation lugs 44 align with the actuation channels 54.
  • the integral dispensing opening 68 aligns with the outlet passage 48; thereby opening the liquid passage.
  • the upper housing 24 is rotated relative to the lower housing 26
  • the upper housing 24 is also rotated relative to the bellows 40.
  • the bellows 40 remains stationary relative to the lower housing 26 due in part to the cooperation between notches 70 on the inlet end of the bellows 40 and the anti-rotation lugs 46 of the lower housing 26.
  • the elongate channel 66 of the bellows 40 rotates within the inner cylindrical waif 52 of the upper housing 24 until the outlet opening 68 aligns with the outlet passage 48
  • Manual actuation of the pump device 20 is accomplished by axially reciprocating the upper housing 24 relative to the lower housing 26.
  • the actuation lugs 44 slide within the actuation channels 54 During the downstroke of this reciprocating action, the inlet valve member 34 is sealed against the inlet valve seat 35. This causes pressure to increase within the collapsible pump chamber 40 which causes the outlet valve member 30 to move away from the outlet valve seat 32; thereby opening the outlet valve 30 and 32. Consequently, the liquid within the decreasing volume of the collapsible pump chamber 40 is dispensed through the integral outlet opening 68 and the outlet passage 48. As the liquid is dispensed it provides an upward force on the outlet valve member 30 which can move the outlet valve member 30 to the distal end of the integral elongate channel 66.
  • this bellows 40 will begin by collapsing at the upper end with the thinner wall and the more acute pleat angles. This portion of the bellows 40 (i.e., its upper end) gets progressively larger in diameter toward the bottom thereof. Consequently, the initial collapse will result in a relatively small volume of liquid being dispensed per given stroke length initially and gradually increasing. Thus, if a small dose is required, this bellows provides good control during initial actuation. Should a larger dose be required, the continued actuation of the bellows will result in a higher volume of product being dispensed per given stroke length; thereby increasing the flow rate. Upon release of the manually compressive force, the bellows 40 begins to expand, due to its resiliency.
  • a spring may alternatively be added to replace or supplement the resiliency of the bellows 40.
  • This expansion creates a negative pressure (i.e., below atmospheric) within the collapsible pump chamber 40. Consequently, atmospheric pressure pushes liquid in the outlet passage 48 back into the bellows 40 (at least relatively viscous liquids) until the outlet valve member 30 again seals against the outlet valve seat 32; thereby closing the outlet valve 30 and 32.
  • the longer the integral elongated channel 66 the more time it takes for the valve member 30 to seat, and the more liquid is sucked back into the bellows 40. Such suck back is desirable since it helps keep the dispensing passage clear between operations.
  • a large dose embodiment of a dispensing pump device of the present invention is provided.
  • This pump device 120 is substantially identical to the previous pump device 20.
  • the lower housing 126 extends into the container 122 to permit a bellows 140 of increased length.
  • the tamper evident tab 162 is attached to the lower housing 126 instead of the upper housing 124. Although the tamper evident tab 162 does not prevent rotating the pump device 120 between open and closed shipping seal positions, it prevents actuation of the pump device 120 through interference with the nozzle surrounding the outlet passage 148 when in the open shipping seal position. Operation of this pump device 120 is substantially identical to that discussed above with respect to the previous pump device 20.
  • the diameter of the bellows 140 is constant.
  • the bellows 140 includes a thin wall section at its upper end and a relatively thick wall section at its lower end.
  • the pleat angles at the upper end are more acute than the pleat angles of the thick wall section. Consequently, the upper end of this bellows 140 will collapse first, and then the lower end of this bellows 140 will collapse. Since the diameter is essentially unchanged the volume of liquid dispensed per given stroke length will be essentially constant throughout the collapse. However, as seen in Figure 8, this bellows is also suitable for use with the pump device of Figure 1.
  • the liquid may be discharged in a simple liquid stream (as in with a lotion pump) wherein the nozzle is an open channel; or as a foam wherein air is mixed with the liquid (e.g., through use of a venturi) at or near a foam forming device (e.g., a screen or static mixer).
  • a simple liquid stream as in with a lotion pump
  • the nozzle is an open channel
  • a foam wherein air is mixed with the liquid
  • a foam forming device e.g., a screen or static mixer

Abstract

L'invention concerne une chambre de pompe pouvant s'aplatir, par exemple en accordéon (40). La chambre de pompe pouvant s'aplatir comporte une paroi latérale pouvant s'aplatir qui délimite le volume interne de la chambre de pompe. La paroi latérale pouvant s'aplatir a une stucture qui s'aplatit suivant un schéma prédéterminé lorsque le dispositif de pompe est actionné. Par exemple, le schéma prédéterminé d'aplatissement peut produire un changement initial relativement faible du volume interne pour une longueur de course donnée, suivi par un changement accru du volume interne pour une longueur de course donnée. Dans ce cas, le dispositif de pompe assure initialement un très bon contrôle de la quantité de produit expulsé, ainsi qu'un dosage précis pour une course partielle. Toutefois, le même dispositif de pompe peut également fournir un grand volume de produit lorsque la course est complète.
PCT/US1994/004254 1993-06-24 1994-04-18 Chambre de pompe pouvant s'aplatir suivant un schema predetermine WO1995000253A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE69411919T DE69411919T2 (de) 1993-06-24 1994-04-18 Zusammendrückbare pumpkammer mit vorbestimmtem faltbaren muster
AU65595/94A AU678463B2 (en) 1993-06-24 1994-04-18 Collapsible pump chamber having predetermined collapsing pattern
JP7502780A JPH08511723A (ja) 1993-06-24 1994-04-18 所定の伸縮パターンを持つ伸縮自在のポンプチャンバ
KR1019950705977A KR960703354A (ko) 1993-06-24 1994-04-18 예정된 절첩형태를 갖는 절찹식 펌프실(Compressible pump chamber having predetermined collapsing pattern)
CA002165315A CA2165315C (fr) 1993-06-24 1994-04-18 Reservoir de pompe comprimable dont les parois s'affaissent de facon pre-etablie
EP94913425A EP0705141B1 (fr) 1993-06-24 1994-04-18 Chambre de pompe pouvant s'aplatir suivant un schema predetermine
BR9406962A BR9406962A (pt) 1993-06-24 1994-04-18 Câmara de bomba retrátil com padrão de retratibilidade predeterminado

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/082,001 US5303867A (en) 1993-06-24 1993-06-24 Trigger operated fluid dispensing device
US08/082,001 1993-06-24
US20332194A 1994-02-28 1994-02-28
US08/203,321 1994-02-28

Publications (1)

Publication Number Publication Date
WO1995000253A1 true WO1995000253A1 (fr) 1995-01-05

Family

ID=26766307

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US1994/004255 WO1995001226A1 (fr) 1993-06-24 1994-04-18 Pompe a chambre pliante et bouchon de transport ne formant qu'une seule piece avec celle-ci
PCT/US1994/004254 WO1995000253A1 (fr) 1993-06-24 1994-04-18 Chambre de pompe pouvant s'aplatir suivant un schema predetermine

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US1994/004255 WO1995001226A1 (fr) 1993-06-24 1994-04-18 Pompe a chambre pliante et bouchon de transport ne formant qu'une seule piece avec celle-ci

Country Status (12)

Country Link
EP (2) EP0705144B1 (fr)
JP (2) JPH08511988A (fr)
KR (2) KR960703354A (fr)
CN (2) CN1069232C (fr)
AT (1) ATE168594T1 (fr)
AU (2) AU7091794A (fr)
BR (2) BR9406972A (fr)
CA (2) CA2165314C (fr)
DE (2) DE69411919T2 (fr)
ES (2) ES2118403T3 (fr)
MX (1) MXPA94002797A (fr)
WO (2) WO1995001226A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0757004A1 (fr) * 1995-01-27 1997-02-05 Yoshino Kogyosho Co., Ltd. Pompe a jet pour liquide
EP0941208A1 (fr) * 1996-04-05 1999-09-15 Yoshino Kogyosho Co., Ltd. Pompe a soufflet presentant une tete d'alimentation a embout et a depression
DE19942792A1 (de) * 1999-09-08 2001-03-15 Pfeiffer Erich Gmbh & Co Kg Spender für Medien
FR2804728A1 (fr) 2000-02-09 2001-08-10 Oreal Pompe, et ensemble de conditionnement equipe d'une telle pompe
ES2161198A1 (es) * 2000-05-16 2001-11-16 Calmar Monturas Sa Bomba con dispositivo de descompresion.
EP1360995A1 (fr) * 2001-02-14 2003-11-12 Advanex Inc. Unite de soupape et recipient
WO2006100027A1 (fr) * 2005-03-23 2006-09-28 Meadwestvaco Calmar Gmbh Pompe a piston a main pourvue d'une tete de distribution blocable pour distribuer des substances fluides
JP2009261933A (ja) * 2008-04-21 2009-11-12 Kil Soo Kim 液状物汲上機構およびディスペンサ用ポンプノズル

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5544789A (en) * 1995-01-05 1996-08-13 Calmar Inc. Bellows pump dispenser
FR2732742B1 (fr) * 1995-04-07 1997-05-30 Valois Ensemble de clapet d'admission.
DE29514644U1 (de) * 1995-09-12 1996-02-01 Piepenstock Friedhelm Schraubendruckfeder
CN1077239C (zh) * 1996-07-26 2002-01-02 塔普拉斯特股份公司 对容器中的制品实施分配的塑料泵
JP4588851B2 (ja) * 2000-08-29 2010-12-01 キャニヨン株式会社 ポンプディスペンサ
US8302817B2 (en) * 2006-09-22 2012-11-06 Darren Saravis Fluid dispenser
DE102008029004A1 (de) * 2007-06-29 2009-01-02 Rpc Bramlage Gmbh Spender zur Ausgabe flüssiger oder pastöser Massen
FR2930178B1 (fr) * 2008-04-22 2010-06-11 Rexam Dispensing Sys Flacon comprenant un soufflet de distribution.
BRPI1007507A2 (pt) * 2009-01-16 2016-02-23 Colgate Palmolive Co recipiente de dispensação, e, acessório fixado a um recipiente de dispensação.
DE102010046118B4 (de) * 2010-09-21 2021-07-01 Anvis Deutschland Gmbh Kupplungsteil für eine Drei- oder Mehrstellenanbindung und Drei- oder Mehrstellenanbindung
GB2514988B (en) * 2012-03-16 2019-01-16 Silgan Dispensing Systems Netherlands B V Venting pump devices and methods for using the same
FR2990871B1 (fr) * 2012-05-24 2015-04-10 Valois Sas Dispositif de distribution de produit fluide.
KR20150046220A (ko) * 2012-08-21 2015-04-29 아르미낙 ＆ 어쏘시에이츠, 엘엘씨 직립 압착식 거품발생기
BR112015031973A2 (pt) * 2013-06-26 2017-07-25 Colgate Palmolive Co conjunto de bomba para ligação com um recipiente
EP3169444B1 (fr) * 2014-07-14 2021-01-06 Rieke Packaging Systems Limited Distributeurs à pompe
CN107628355B (zh) * 2016-07-19 2023-05-26 丁要武 带防进水机构的乳液泵
EP3427840B1 (fr) * 2017-07-13 2020-12-02 Aptar Radolfzell GmbH Distributeur de liquide
CN107934182A (zh) * 2017-12-22 2018-04-20 余姚晟祺塑业有限公司 一种新型喷头
KR102044128B1 (ko) * 2019-08-19 2019-11-12 이영주 펌프 용기

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973700A (en) * 1975-09-29 1976-08-10 Schmidt Edward C Bellows pump with extension having integral valves
US4336895A (en) * 1977-07-28 1982-06-29 Aleff Hans P Finger actuated pump assembly
DE3909633A1 (de) * 1989-03-23 1990-10-11 Megaplast Dosiersysteme Dosierpumpe
US5195878A (en) * 1991-05-20 1993-03-23 Hytec Flow Systems Air-operated high-temperature corrosive liquid pump

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4204614A (en) * 1978-09-28 1980-05-27 Diamond International Corporation Fluid dispenser having a spring biased locking mechanism for a safety nozzle cap
EP0194417B1 (fr) * 1985-03-14 1989-10-04 MegaPlast Dosiersysteme GmbH & Co. Pompe de dosage avec soufflet de pompage pour bouteilles ou flacons similaires

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973700A (en) * 1975-09-29 1976-08-10 Schmidt Edward C Bellows pump with extension having integral valves
US4336895A (en) * 1977-07-28 1982-06-29 Aleff Hans P Finger actuated pump assembly
DE3909633A1 (de) * 1989-03-23 1990-10-11 Megaplast Dosiersysteme Dosierpumpe
US5195878A (en) * 1991-05-20 1993-03-23 Hytec Flow Systems Air-operated high-temperature corrosive liquid pump

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0757004A1 (fr) * 1995-01-27 1997-02-05 Yoshino Kogyosho Co., Ltd. Pompe a jet pour liquide
EP0757004A4 (fr) * 1995-01-27 1999-08-11 Yoshino Kogyosho Co Ltd Pompe a jet pour liquide
US6119902A (en) * 1995-01-27 2000-09-19 Yoshino Kogyosho Co., Ltd. Liquid jet pump
US7472809B2 (en) 1995-01-27 2009-01-06 Yoshino Kogyosho Co., Ltd. Non-leaking non-dripping liquid jet pump
US6938803B2 (en) 1995-01-27 2005-09-06 Yoshino Kogyosho Co., Ltd. Non-leaking non-dripping liquid jet pump
US6702156B2 (en) 1995-01-27 2004-03-09 Yoshino Kogyosho, Co., Ltd. Non-leaking non-dripping liquid jet pump
EP1210983A3 (fr) * 1995-01-27 2002-09-04 YOSHINO KOGYOSHO Co., Ltd. Pompe à jet pour liquide
EP1210983A2 (fr) * 1995-01-27 2002-06-05 YOSHINO KOGYOSHO Co., Ltd. Pompe à jet pour liquide
EP0941208A1 (fr) * 1996-04-05 1999-09-15 Yoshino Kogyosho Co., Ltd. Pompe a soufflet presentant une tete d'alimentation a embout et a depression
EP0941208A4 (fr) * 1996-04-05 1999-09-15
US6352181B1 (en) 1999-09-08 2002-03-05 Erich Pfeiffer Gmbh Media dispenser with snap action joint and method for mounting a reservoir
DE19942792A1 (de) * 1999-09-08 2001-03-15 Pfeiffer Erich Gmbh & Co Kg Spender für Medien
US6547106B2 (en) 2000-02-09 2003-04-15 L'oreal S.A. Pump for dispensing a product
EP1123746A1 (fr) * 2000-02-09 2001-08-16 L'oreal Pompe, et ensemble de conditionnement équipé d'une telle pompe
FR2804728A1 (fr) 2000-02-09 2001-08-10 Oreal Pompe, et ensemble de conditionnement equipe d'une telle pompe
WO2001087495A1 (fr) * 2000-05-16 2001-11-22 Calmar-Monturas S.A. Pompe pourvue d'un dispositif de decompression
ES2161198A1 (es) * 2000-05-16 2001-11-16 Calmar Monturas Sa Bomba con dispositivo de descompresion.
US6681961B2 (en) 2000-05-16 2004-01-27 Saint-Gobain Calmar, S.A. Pump having a decompression device
EP1360995A1 (fr) * 2001-02-14 2003-11-12 Advanex Inc. Unite de soupape et recipient
EP1360995A4 (fr) * 2001-02-14 2006-07-19 Advanex Inc Unite de soupape et recipient
WO2006100027A1 (fr) * 2005-03-23 2006-09-28 Meadwestvaco Calmar Gmbh Pompe a piston a main pourvue d'une tete de distribution blocable pour distribuer des substances fluides
JP2009261933A (ja) * 2008-04-21 2009-11-12 Kil Soo Kim 液状物汲上機構およびディスペンサ用ポンプノズル

Also Published As

Publication number Publication date
AU7091794A (en) 1995-01-24
EP0705141B1 (fr) 1998-07-22
CN1125915A (zh) 1996-07-03
WO1995001226A1 (fr) 1995-01-12
EP0705144B1 (fr) 1999-09-15
CN1069232C (zh) 2001-08-08
MXPA94002797A (es) 2002-06-18
CN1125916A (zh) 1996-07-03
DE69420730D1 (de) 1999-10-21
EP0705141A1 (fr) 1996-04-10
KR960703353A (ko) 1996-08-17
CN1071147C (zh) 2001-09-19
AU6559594A (en) 1995-01-17
ATE168594T1 (de) 1998-08-15
DE69420730T2 (de) 2000-03-16
BR9406972A (pt) 1996-03-26
ES2118403T3 (es) 1998-09-16
CA2165315C (fr) 2000-10-24
EP0705144A1 (fr) 1996-04-10
ES2135586T3 (es) 1999-11-01
BR9406962A (pt) 1996-08-27
CA2165314A1 (fr) 1995-01-12
DE69411919T2 (de) 1999-04-22
JPH08511988A (ja) 1996-12-17
KR960703354A (ko) 1996-08-17
JPH08511723A (ja) 1996-12-10
CA2165314C (fr) 2000-11-28
DE69411919D1 (de) 1998-08-27
AU678463B2 (en) 1997-05-29

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