US3362344A - Liquid dispenser - Google Patents

Liquid dispenser Download PDF

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Publication number
US3362344A
US3362344A US530854A US53085466A US3362344A US 3362344 A US3362344 A US 3362344A US 530854 A US530854 A US 530854A US 53085466 A US53085466 A US 53085466A US 3362344 A US3362344 A US 3362344A
Authority
US
United States
Prior art keywords
plunger
valve
pump
port
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US530854A
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English (en)
Inventor
Otto H Duda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Silgan Dispensing Systems Corp
Original Assignee
Calmar Inc
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
Application filed by Calmar Inc filed Critical Calmar Inc
Priority to US530854A priority Critical patent/US3362344A/en
Priority to DE19671653401 priority patent/DE1653401C/de
Priority to GB9447/67A priority patent/GB1172306A/en
Priority to FR97079A priority patent/FR1512927A/fr
Priority to JP42013053A priority patent/JPS4844121B1/ja
Application granted granted Critical
Publication of US3362344A publication Critical patent/US3362344A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B05B11/106—Means for locking a pump or its actuation means in a fixed position in a retracted position, e.g. in an end-of-dispensing-stroke 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
    • B05B11/1001—Piston pumps
    • 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

Definitions

  • the invention relates to a piston type pump having a dual valve seat structure in which the structure defines a resiliently-stretchable valve port and/or seat for cooperation with the valve stem to function as a pump outlet valve and a separate valve port having a substantially ⁇ low degree of resiliency for cooperation with a sealing valve carried by the valve stem.
  • This invention relates to improvements in liquid dispensing reciprocating pumps such as are commonly u'sed for dispensing liquids from the containers in which they are sold. Since such pumps are ycustomarily applied to the liquid containers at the manufacturing or bottling plant, it is desirable that some suitable shipping seal be provided in order to prevent leakage of liquid in the event of rough treatment or partial inversion of the containers, changes in atmospheric, and/or vapor pressure within the containers during shipment to distributors and during storage.
  • the present invention has for its primary object to provide such a liquid dispenser of a type such as disclosed in U.S. Patent 3,228,347 of Jan. l1, 1966, to
  • the inlet valve for admitting fluid into the pump chamber has its valve stem slidably disposed through a resiliently-expansible port in the plunger from ⁇ a. portion of the discharge passage which leads through the inlet valve stem cooperates with the same valve seat or port in the fully-projected position of the plunger to define the above-mentioned shipping seal.
  • valve seat dening portion of such a valve subjects it to conflicting requirements in that it must have suiiicient elasticity or yieldability to open under fluid pressure on the one hand; and on the other hand must, when functioning as a component of a sealing valve, afford a reasonable degree of resistance to fluid pressure.
  • a primary object of the present invention to improve upon such prior type of structure to provide a pump having a dual valve seat structure in which the structure defines a resiliently-stretchable valve port and/or seat for cooperation with the valve stern to function as the pump outlet valve, and a separate valve I port and/or seat having a substantially-lower degree of elasticity or resiliency, or none at all, for cooperation with a sealing valve carried by the valve stem.
  • Such improved structure retains substantially all of the advantages of simplicity and economy of structure of the i said patented device while, at the same time, affording an improved more positively and reliably operating shipping seal.
  • FIGURE 1 is Va View partly in axial cross section and partly in elevation of a pump structure in accordance with the invention, showing the plunger in its fully-projected position to establish the shipping seals;
  • FIGURE 2 is a view similar to FIGURE l but showing the plunger retained in its fullydepressed position in which shipping seals also are established;
  • FIGURE 3 is a fragmentary section showing certain details of the cylinder structure at an intermediate stage of its assembly with the plunger.
  • a dispensing pump including a pump barrel 10 which, in the present instance, extends through and is supported by a radially-enlarged and internallythreaded collar portion 11 within the central opening of a container closure 12 which is adapted by internal threading 14 or otherwise for application to a container.
  • a container closure 12 which is adapted by internal threading 14 or otherwise for application to a container.
  • the specific form and construction of the closure 12 and collar 11, and the manner in which they are interconnected, is fully disclosed in said Patent 3,228,347. It will be seen that the cylinder 1i) has an inlet port or passage 16 opening axially through its otherwise closed inlet end.
  • the port is defined by an upward extension of the suction tube 18 which depends ⁇ from the pump cylinder 10 and is of suliicient length that its lower end will normally be disposed closely adjacent the bottom of the container in which the pump is employed, so that the container contents may be sucked upwardly through the tube 18 and into the pump cylinder.
  • the pump cylinder 10 opens through the radially-enlarged collar 11 for reception of various portions of the pump assembly, including a pump plunger 20 which is disposed for reciprocation in the cylinder.
  • This plunger 20 includes a hollow tubular plunger rod portion 22 having a piston 24 at its innermost end in fluid-tight reciprocating engagement with the interior wall surface of the cylinder 10.
  • the plunger including the plunger rod 22 and piston 24, is molded of a suitable plastic material to form a unitary structure. It will be seen that the piston 24 cooperates with the cylinder to define a variable volume pump chamber 26 between the piston and the closed end of the cylinder through which is formed the inlet port 16.
  • This valve serves the usual function of admitting fluid from the container into the pump chamber 26 through the inlet port 16 while effectively preventing backflow from the chamber.
  • the valve 28 is guided for axial movement in a cage formed by a plurality of relatively-spaced fingers 32 molded integrally with the cylinder 10 in annular formation around the valve seat 30 for guiding reception of the valve 28.
  • the outer free end portions of the lingers are resiliently radially deiiectable in response to spreading action exerted thereon by the conical nose 28a of the valve to permit assembly of the valve into the case.
  • Radially inwardly-directed free end portions 33 of the respective fingers provide detents which are adapted to snap back over the valve 28 so as to prevent its'subsequent outward movement by pressure of the plunger .a spring 34.
  • the fingers 32 thus permit but a limited degree of unseating movement of the valve 28 and, together with the valve seat 30, serve as means for limiting the axial movement of the valve 28 in either direction.
  • the discharge or outlet passage 36 for the pump is defined by the hollow pump plunger and extends completely through the plunger including both the plunger rod 22 and piston 24 to deliver liquid from the pump chamber to a suitable discharge head 38 Which is affixed to and carried at the outer end of the plunger rod 22 and from which the liquid is discharged into the atmosphere in well-known manner.
  • the discharge head 38 is provided with a finger piece 40 to facilitate actuation of the pump by intermittent finger pressure, and has an externally-threaded base 42 for reception in the internallythreaded collar 1l, when desired, to secure the plunger in its fully-depressed position, as shown in FIGURE 2.
  • the particular form of discharge head 38 illustrated constitutes no part of the present invention but is of conventional structure such as shown in various prior patents.
  • a castellated skirt 39 around the upper end of the pump cylinder for supporting the pump cylinder against rotation by a conformingly-castellated sleeve-like tool (not shown) while the plunger is depressed and rotated to interengage the threaded skirt 42 within the collar 11 prior to application of the pump to a container.
  • breather openings or vents 44 are provided in the cylinder wall above the piston 24 at a location to be covered by the piston only in the raised or retracted position of the plunger.
  • a plug P of a suitable plastic such as polyethylene, synthetic rubber, or the like, having the characteristics of elasticity and resilient deformability to a degree suiiicient for the purposes hereinafter described.
  • This plug P is provided with relatively-concentric sleeves 45 and 47, the free outer ends of which terminate at different axial locations and respectively define the resiliently-stretchable outlet valve port or seat 46 for cooperation with the valve stem 29 and the sealing port 48 for cooperation with the sealing valve 52, shown in the drawings as comprising an enlarged conical plug at the free end of the valve stern 29.
  • the plug P is inserted into the lower end of the plunger passage 36 in snug sealing relation therewith into an operative position which is determined by abutting engagement of its projecting radial sealing iiange 54 with the annular shoulder 56 of the plunger.
  • the valve stem 29 is disposed for axial movement through the ports defined by the respective annular seats 46 and 48.
  • the pump outlet valve seatk 46 defined by the elastically-stretchable peripheral free end of the tapered sleeve 45 is of a diameter adapted for normally-snug fluid-tight engagement with the valve stem 29, it being understood that the latter is of circular cross section. Because of such relationship, it is also normally frictionally engaged with the valvestem to impart a yielding thrust or force from the plunger to the inlet valve 28 for positively seating and unseating the latter at the inception of each compression and suction stroke respectively of the plunger.
  • the elasticity of the seat 46 is such that continued downward movement of the plunger after seating the valve 28, and the resulting pressure on liquid trapped within the pump chamber 26, will expand the sleeve 45 to move the seat portion 46 thereof radially away from the stem, thus providing a clearance space through which the liquid is free to flow upwardly into the plunger discharge passage 36.
  • the sleeve 47 is preferably of greater wall thickness than the sleeve 45 so as to make the port 48 less capable of resilinetly stretching than the port 45.
  • the port 48 may be defined by material of such thickness as to be for all practical purposes substantially inelastic.
  • the seats 46 and 48 are relatively axially spaced and are so posi tioned with relation to the sealing valve 52 that, in the fully-raised or projected position of the plunger, as shown in FIGURE 1, the sealing valve 52 is firmly received and wedged within the port 48 under the action of the plunger spring 34 to thus prevent leakage from the pump chamber into the passage 36.
  • the annular port or seat 48 has a normal radius which is sufficiently greater than that of the valve stern 29 as to provide ample clearance with the stem such as will permit the free flow of fluid to pasi sage 36 when the seat 48 is disengaged from sealing valve 52. It will thus be apparent that the port 48 is closed and sealed by the valve 52 only in the fully-projected posii tion of the plunger, as in FIGURE 1, and that, at all other times during and throughout the plunger stroke, it will be open for the free passage of fiuid.
  • the retraction or suction stroke of the piston 24 under the infiuence of the spring 34 will be limited by engagement between the trailing rear end edge of the outwardly directed piston skirt 68 and an annular flange or rib 70 which is formed by a suitable swaging operation after assembly of the plunger and its associated parts within the cylinder 10 in a manner generally similar to that disclosed in the lCorsette U.S. Patent 3,084,873.
  • the rib '70 is here illustrated as defining an inwardly-directed annular groove 72 for sealing reception of the piston skirt 68.
  • the rib 76 may be initially formed as a cylindrical sleeve 70a Within the cylinder 10 in the manner shown in FIGURE 3.
  • the plunger may be inserted within the cylinder to a position in which the piston is located inwardly of the sleeve 70a, following which, through a suitable swaging operation, the upper portion of the sleeve 70a is turned reversely inwardly to provide a cuff spaced radially inwardly of the remainder of said sleeve whereby to form the groove 72.
  • the plunger In order that the plunger may exert seating pressure on the inlet valve 2-8- in the fully-depressed position of the plunger as in FIGURE 2, the plunger includes an axially inwardly-directed shoulder 74 defined by the plug P, positioned for axial abutment with an opposing annular shoulder 76 around the valve stem.
  • finger pressure apA plied on the finger piece 40 of the discharge head will urge the entire plunger 20 inwardly on its compression stroke to expel liquid through the discharge head 38.
  • the spring 46 will project the plunger outwardly on its suction stroke.
  • valve stem 29 may be assembled with relation to the plunger 20 by Withholding the formation of its enlarged sealing valve 52 until after insertion of the latter through the valve ports 46 and 4S and thereafter expanding same to form the valve 52 by a suitable wedge-like tool thrust into the free axial end of the valve stem 29 whereby to form the recess as shown at R in FIGURE 1 and to thus expand the material surrounding said recess radially outwardly.
  • the plunger head 38 may be grasped and rotated to release the threaded connection between the collar 11 and the threaded base of the discharge head at 42, whereupon the plunger spring 34 will immediately expand to project the plunger outwardly on its suction stroke.
  • the valve seat 46 will be elastically closed around the valve stern 29.
  • the frictional engagement of the valve seat 46 with the valve 29 will immediately unseat the valve 28 so that subsequent outward movement of the plunger (during which the stem 29 will continue to close the port defined by seat 30) will draw fluid upwardly through the dip tube 1S and port 16 into the pump chamber.
  • the sealing valve 52 will be operatively seated in the port 48 to prevent upward leakage of liquid from the pump chamber to the discharge passage 36.
  • the pump outlet valve seat 46 may be quite thin and easily deformed or stretched to facilitate the pumping action; while the sealing valve seat and port 48 may be of substantially-heavier and relatively-unstretchable construction such as is capable of coperating with the sealing valve 52 to resist a substantial degree of pressure of liquid within the pump chamber 26.
  • a reciprocating liquid pump including a pump cylinder having an inlet port through one axial end thereof, an inlet valve carried by said cylinder for axial movement within predetermined limits into and from seating relation with said inlet port, and a plunger disposed for axial movement in said cylinder on suction and compression strokes respectively away from and toward said inlet port, said plunger and cylinder jointly defining a variable Volume pump chamber between said plunger and the inlet port, said plunger being provided with an axial discharge passage ending therethrough from the pump chamber, the improvements comprising a pair of relatively axially-spaced valve seats defining an outlet port and a sealing valve port respectively in said passage, a substantially-rigid valve stem connected to said inlet valve and disposed for axial movement through both said ports, a tubular elastic sleeve secured within said passage, said sleeve having a free end directed axially away from said pump chamber to define said outlet port and seat and having a portion remote from said free end secured in fluidtight relation within said passage, said outlet
  • a reciprocating liquid pump as defined in claim 2, the further improvement including a tubular plug snugly received in fluid-tight manner in the inner end of said plunger discharge passage, the hollow interior of said plug opening axially through the opposite ends of the plug in communication with said pump chamber and with said passage respectively, said sleeve being disposed within and forming an integral part of said tubular plug.
  • a radially outwardly-projecting flange encircling said plug for axial abutment against the inner end of said plunger to limit the movement of the plug into said discharge passage and to define a seat for the plunger spring, and a plunger spring under compression in said pump chamber between said flange and the inner end of said chamber.
  • said sealing port comprises the free axially-outer end of said plug, same being disposed in coaxial radially-spaced relation to said sleeve.
  • a reciprocating liquid pump as defined in claim 1, the further improvement including an annular stop rim formed within said cylinder and projecting radially inwardly from the inner wall thereof, said rim being formed to provide an annular sealing groove directed toward the inner axial end of the cylinder, said plunger having a piston thereon disposed axially inwardly of the cylinder from said rim and having an outwardly-directed piston skirt the outer edge of which is disposed for sealing reception in said sealing groove.

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  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
US530854A 1966-03-01 1966-03-01 Liquid dispenser Expired - Lifetime US3362344A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US530854A US3362344A (en) 1966-03-01 1966-03-01 Liquid dispenser
DE19671653401 DE1653401C (de) 1966-03-01 1967-02-28 Flussigkeitskolbenpumpe
GB9447/67A GB1172306A (en) 1966-03-01 1967-02-28 Improvements in Hand Actuated Liquid Dispensing Pumps
FR97079A FR1512927A (fr) 1966-03-01 1967-03-01 Pompe distributrice de liquide à deux soupapes voisines parallèles
JP42013053A JPS4844121B1 (2) 1966-03-01 1967-03-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US530854A US3362344A (en) 1966-03-01 1966-03-01 Liquid dispenser

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Publication Number Publication Date
US3362344A true US3362344A (en) 1968-01-09

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US530854A Expired - Lifetime US3362344A (en) 1966-03-01 1966-03-01 Liquid dispenser

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US (1) US3362344A (2)
JP (1) JPS4844121B1 (2)
FR (1) FR1512927A (2)
GB (1) GB1172306A (2)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3531224A (en) * 1969-04-07 1970-09-29 Cook Chem Co Hand pump having free floating valve
US3939943A (en) * 1974-04-25 1976-02-24 Oy Tampella Ab Lubrication of piston operated drill with central flushing tube
US3949906A (en) * 1975-03-19 1976-04-13 The Risdon Manufacturing Company Liquid dispensing pump selectively sealable against leakage
US4147476A (en) * 1974-03-28 1979-04-03 Bespak Industries Limited Pump assembly for an atomizing piston pump
US4169546A (en) * 1977-02-11 1979-10-02 Vertico Industries, Inc. Friction drag pump assembly
WO1990003929A1 (en) * 1988-10-11 1990-04-19 Risdon Corporation Sealing pump
US4930670A (en) * 1989-03-17 1990-06-05 Smiley Chien Pumping mechanism for dispensing lotion in bottle/container
US5326237A (en) * 1993-03-08 1994-07-05 Dupont Industries, Inc. High volume pump with valve tube
WO1994015715A1 (en) * 1992-12-31 1994-07-21 Philip Meshberg Atomizing pump
WO1996003624A1 (en) * 1994-07-21 1996-02-08 Emson, Inc. Dispensing pump which is lockable and sealable for transportation and storage
WO1997027948A1 (en) * 1996-02-01 1997-08-07 Continental Sprayers International, Inc. Manually operated fluid dispensing pump
US5673824A (en) * 1995-05-31 1997-10-07 Taplast Srl Plastic dosing pump for dispensing liquids from containers
US5806721A (en) * 1995-12-15 1998-09-15 Canyon Corporation Container mounted pump dispenser with back suction
US5826756A (en) * 1996-03-08 1998-10-27 Continental Sprayers International, Inc. Water shield for pump dispenser
US6053371A (en) * 1998-05-15 2000-04-25 Owens-Illinois Closure Inc. Pump dispenser and method for making same
US6173863B1 (en) 1999-08-09 2001-01-16 Owens-Illinois Closure Inc. Pump dispenser having a plunger seal
US6340102B1 (en) * 1999-02-19 2002-01-22 Cheng-Yuan Su Sealing valve structure for liquid sprayers
US6419125B1 (en) * 2001-01-05 2002-07-16 Darin Co., Ltd. Dispenser
US6458280B1 (en) 1999-01-06 2002-10-01 Emerson Electric Co. Device and method for dispensing bacteriostat into humidifier
US6634872B1 (en) * 1999-03-22 2003-10-21 Rexam Sofab Suction pump
US7032783B1 (en) * 2002-05-14 2006-04-25 Continentalafa Dispensing Company Pump dispenser for liquid products
US20110006087A1 (en) * 2001-04-16 2011-01-13 Ben Z. Cohen Microdispensing pump
US20110240680A1 (en) * 2010-04-01 2011-10-06 Heiner Ophardt Stationary stem pump
US20140042189A1 (en) * 2011-05-23 2014-02-13 Aptar France Sas Fixing ring and a fluid product dispenser using such a ring
US9908132B2 (en) * 2015-04-17 2018-03-06 The Procter & Gamble Company Mechanism to prevent actuator of a pump dispenser to prematurely open and leak
US10640270B2 (en) 2016-09-28 2020-05-05 The Procter And Gamble Plaza Closure mechanism that prevents accidental initial opening of a container
US10759576B2 (en) 2016-09-28 2020-09-01 The Procter And Gamble Company Closure interlocking mechanism that prevents accidental initial opening of a container
US10836559B2 (en) 2017-11-23 2020-11-17 The Procter And Gamble Company Closure for a container comprising three positions
US10836560B2 (en) 2017-11-23 2020-11-17 The Procter And Gamble Company Closure for a container having an asymmetrical protrusion
EP4631551A1 (en) * 2024-04-08 2025-10-15 ALPLA Werke Alwin Lehner GmbH & Co KG Manual pump

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5603734B2 (ja) * 2010-10-21 2014-10-08 大和製罐株式会社 ポンプ式吐出容器
DE102018100338A1 (de) * 2018-01-09 2019-07-11 Aero Pump Gmbh Austragvorrichtung zum Austragen von flüssigen Medien

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2180702A (en) * 1937-02-03 1939-11-21 Laval Separator Co De Device for delivering measured quantities of liquids
US3228347A (en) * 1963-10-24 1966-01-11 Calmar Inc Pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2180702A (en) * 1937-02-03 1939-11-21 Laval Separator Co De Device for delivering measured quantities of liquids
US3228347A (en) * 1963-10-24 1966-01-11 Calmar Inc Pump

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3531224A (en) * 1969-04-07 1970-09-29 Cook Chem Co Hand pump having free floating valve
US4147476A (en) * 1974-03-28 1979-04-03 Bespak Industries Limited Pump assembly for an atomizing piston pump
US3939943A (en) * 1974-04-25 1976-02-24 Oy Tampella Ab Lubrication of piston operated drill with central flushing tube
US3949906A (en) * 1975-03-19 1976-04-13 The Risdon Manufacturing Company Liquid dispensing pump selectively sealable against leakage
US4169546A (en) * 1977-02-11 1979-10-02 Vertico Industries, Inc. Friction drag pump assembly
WO1990003929A1 (en) * 1988-10-11 1990-04-19 Risdon Corporation Sealing pump
US4991747A (en) * 1988-10-11 1991-02-12 Risdon Corporation Sealing pump
US4930670A (en) * 1989-03-17 1990-06-05 Smiley Chien Pumping mechanism for dispensing lotion in bottle/container
US5392962A (en) * 1992-12-31 1995-02-28 Meshberg; Philip Atomizing pump
WO1994015715A1 (en) * 1992-12-31 1994-07-21 Philip Meshberg Atomizing pump
US5326237A (en) * 1993-03-08 1994-07-05 Dupont Industries, Inc. High volume pump with valve tube
WO1996003624A1 (en) * 1994-07-21 1996-02-08 Emson, Inc. Dispensing pump which is lockable and sealable for transportation and storage
US5524793A (en) * 1994-07-21 1996-06-11 Emson, Inc. Dispensing pump which is lockable and sealable for transporation and storage
US5924603A (en) * 1995-03-10 1999-07-20 Taplast Spa Pump made of plastic for dispensing products from containers
US5673824A (en) * 1995-05-31 1997-10-07 Taplast Srl Plastic dosing pump for dispensing liquids from containers
US5806721A (en) * 1995-12-15 1998-09-15 Canyon Corporation Container mounted pump dispenser with back suction
WO1997027948A1 (en) * 1996-02-01 1997-08-07 Continental Sprayers International, Inc. Manually operated fluid dispensing pump
AU709634B2 (en) * 1996-02-01 1999-09-02 Continental Sprayers International, Inc. Manually operated fluid dispensing pump
US5826756A (en) * 1996-03-08 1998-10-27 Continental Sprayers International, Inc. Water shield for pump dispenser
WO1999002446A1 (en) 1997-07-11 1999-01-21 Continental Sprayers International, Inc. Water shield for pump dispenser
US6053371A (en) * 1998-05-15 2000-04-25 Owens-Illinois Closure Inc. Pump dispenser and method for making same
US6250510B1 (en) 1998-05-15 2001-06-26 Owens-Illinois Closure Inc. Pump dispenser and method for making same
US6458280B1 (en) 1999-01-06 2002-10-01 Emerson Electric Co. Device and method for dispensing bacteriostat into humidifier
US6340102B1 (en) * 1999-02-19 2002-01-22 Cheng-Yuan Su Sealing valve structure for liquid sprayers
US6634872B1 (en) * 1999-03-22 2003-10-21 Rexam Sofab Suction pump
US6173863B1 (en) 1999-08-09 2001-01-16 Owens-Illinois Closure Inc. Pump dispenser having a plunger seal
US6315162B1 (en) * 1999-08-09 2001-11-13 Owens-Illinois Closure Inc. Pump dispenser having a plunger seal
US6419125B1 (en) * 2001-01-05 2002-07-16 Darin Co., Ltd. Dispenser
US8267285B2 (en) * 2001-04-16 2012-09-18 Ben Z. Cohen Microdispensing pump
US20110006087A1 (en) * 2001-04-16 2011-01-13 Ben Z. Cohen Microdispensing pump
US7032783B1 (en) * 2002-05-14 2006-04-25 Continentalafa Dispensing Company Pump dispenser for liquid products
US20110240680A1 (en) * 2010-04-01 2011-10-06 Heiner Ophardt Stationary stem pump
US8944294B2 (en) * 2010-04-01 2015-02-03 Gotohti.Com Inc. Stationary stem pump
US20140042189A1 (en) * 2011-05-23 2014-02-13 Aptar France Sas Fixing ring and a fluid product dispenser using such a ring
US9132443B2 (en) * 2011-05-23 2015-09-15 Aptar France Sas Fixing ring and a fluid product dispenser using such a ring
US9908132B2 (en) * 2015-04-17 2018-03-06 The Procter & Gamble Company Mechanism to prevent actuator of a pump dispenser to prematurely open and leak
US10640270B2 (en) 2016-09-28 2020-05-05 The Procter And Gamble Plaza Closure mechanism that prevents accidental initial opening of a container
US10759576B2 (en) 2016-09-28 2020-09-01 The Procter And Gamble Company Closure interlocking mechanism that prevents accidental initial opening of a container
US10836559B2 (en) 2017-11-23 2020-11-17 The Procter And Gamble Company Closure for a container comprising three positions
US10836560B2 (en) 2017-11-23 2020-11-17 The Procter And Gamble Company Closure for a container having an asymmetrical protrusion
EP4631551A1 (en) * 2024-04-08 2025-10-15 ALPLA Werke Alwin Lehner GmbH & Co KG Manual pump
WO2025215004A1 (en) * 2024-04-08 2025-10-16 Alpla Werke Alwin Lehner Gmbh & Co Kg Manual pump

Also Published As

Publication number Publication date
JPS4844121B1 (2) 1973-12-22
GB1172306A (en) 1969-11-26
DE1653401A1 (de) 1971-09-23
FR1512927A (fr) 1968-02-09

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Owner name: CALMAR, INC., 333 SOUTHL TURNBULL CANYON ROAD, CIT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:DIAMOND INTERNATIONAL CORPORATION;REEL/FRAME:004199/0053

Effective date: 19831118

Owner name: CALMAR, INC., 333 SOUTHL TURNBULL CANYON ROAD, CIT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DIAMOND INTERNATIONAL CORPORATION;REEL/FRAME:004199/0053

Effective date: 19831118