US3452905A - Self-sealing leak-proof pump - Google Patents

Self-sealing leak-proof pump Download PDF

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Publication number
US3452905A
US3452905A US706104A US3452905DA US3452905A US 3452905 A US3452905 A US 3452905A US 706104 A US706104 A US 706104A US 3452905D A US3452905D A US 3452905DA US 3452905 A US3452905 A US 3452905A
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Prior art keywords
plunger
opening
diaphragm
dispensed
container
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US706104A
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English (en)
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Lewis A Micallef
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Leeds and Micallef
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Leeds and Micallef
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14—Pumps characterised by muscle-power operation
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • F04B43/0063—Special features particularities of the flexible members bell-shaped flexible members
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
    • G01F11/08—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the diaphragm or bellows type

Definitions

  • a fluid dispensing pump for a container of liquid and includes a base adapted to be supported across the opening of the container. The lower end of the base is coupled with a dip tube and a valve which controls this access to the container interior.
  • a diaphragm extends across the top of the base and defines a pump chamber therewith. The diaphragm includes a central boss having inner conical surfaces which mate with complementary shaped surfaces of a plunger.
  • the boss of the diaphragm extends across a radial opening in the plunger which communicates with an axial passageway through the plunger for directing liquid to be dispensed out through a discharge opening.
  • An air network permits air from the ambient into the container to replenish the material dispensed from the container interior intothe pump chamber.
  • the diaphragm is flexed to reduce the volume of the pump chamber. This movement causes the boss to open the radial opening of the plunger whereupon material in the pumping chamber flows into the plunger passage and eventually out through the discharge opening of the pump.
  • the diaphragm moves in an opposite direction closing the plunger opening and permitting liquid in the container interior to pass through the valve in the base to thereby fill the pumping chamber with the liquid to be dispensed.
  • the present invention relates to fluid dispensing pumps for containers and, more particularly, to plunger actuator pumps of the type that are used for discharging liquid or gaseous or pasty substances from containers, such as bottles.
  • Reciprocal pumps of one type or another have been proposed for dispensing material from a container.
  • Containers of this type have been used for handling and dispensing materials of a wide variety as those commonly marketed in the cosmetic, toiletry, food and household products industries.
  • these prior pumps were generally satisfactory and acceptable, there has always been an ever-increasing need insofar as consumer products are concerned for pumps of better construction and superior as well as efiicient performance but, most important of all, an urgent need presently exists for pumps having such characteristics but of significantly simple design and construction that are materially lower in cost of construction, manufacture and assembly.
  • FIG. 1 is an e'levational view of a capped container incorporating a reciprocal dispensing pump in accordance with the present invention
  • FIG. 2 is an enlarged fragmentary longitudinal sectional view taken along line 22 of FIG. 1 through the neck and cap of the container as well as the reciprocal dispensing pump showing the pump parts in a releasably locked fully extended retracted position;
  • FIG. 3 is a similar view showing the pump unlocked and the pump during the pumping stroke during which liquid to be dispensed is forced out of the pump chamber through the discharge passageways;
  • FIG. 4 is again a similar view showing the pump during its retraction stroke at which liquid in the container is adapted to be forced up into the pump chamber and ambient air permitted to replace the liquid drawn upwardly from the container;
  • FIG. 5 is a bottom plan view of the flexible wall of the pump
  • FIG. 6 is a top plan view of the bottom substantially rigid wall of the pump
  • FIG. 7 is a cross-sectional view taken along the line 7-7 of FIG. 2 showing the releasable lock for the pump actuator in a fully locked position;
  • FIG. 8 is a similar cross-sectional view showing the lock in a released position at which the pump is adapted to be actuated.
  • FIG. 9 is an enlarged cross-sectional view taken along the line 99 of FIG. 4.
  • the reciprocal dispensing pump 10 of this invention is shown disposed across the opening of a container 11 which may assume the form of any conventional bottle or similar receptacle, made of glass, plastic or other suitable materials.
  • the container may be used for holding and dispensing a wide variety of materials generally in liquid form as may be found on the market today. These liquids may possess different degrees of viscosities and may include oil, perfume or the like, or pasty substances such as creams or the like, or gaseous substances.
  • the container 11 includes a neck 12 terminating in an upper end 13 defining an opening into the container interior. Threads 14 on the exterior of the neck 12 conveniently support a cap 15 having a substantially coaxial opening 16 in top wall 17 which extends inwardly from the reduced substantially cylindrical skirt 18. Obviously, any other form of securing means between the cap 15 on the neck 12 may be employed either as a permanent or temporary nature.
  • the pump 10 is conveniently mounted across the opening defined by the neck 12 of the container by means of the cap 15.
  • the pump 10 includes a bottom substantially rigid wall defined by member 20 having a substantially circular peripheral flange 22 and a substantially dished shaped body portion 24 inwardly thereof.
  • the base or bottom member 20 includes a substantially flat base 26 extending inwardly of the substantially conical wall 28 which forms an extension of the dished body portion 24.
  • a substantially cylindrical tube 30 extends downwardly and integrally from the base 26 which, together with the tube, defines a substantially coaxial bore 32 serving as a liquid passage.
  • the tube 30 is provided with a valve seat 34 for defining a sealing zone along with a ball check valve 36.
  • the interior of the tube 30 may also be furnished with retaining elements 38 for preventing undue displacement vertically of the ball check valve 36.
  • the lower end of the tube 30 is provided with a reduced boss 40 for receiving a conventional dip tube 42 for conducting liquid to be dispensed from the container interior.
  • the peripheral flange 22 of the bottom member 20 is provided with a substantially circular air passage in the form of recess 44.
  • This recess has extending therefrom passage 46 which communicates with the container interior and which, as will become evident shortly, forms part of an air passage network for replenishing the container with air as the liquid therein is dispensed.
  • the flange 22 is also provided with a circumferentially extending recess 48 and another substantially circular recess 50 for mating with surfaces of the flexible top member 52 for interconnecting the bottom member 20 and top flexible member 52 in a substantially sealed manner.
  • the diaphragm 52 which operates as a pump diaphragm.
  • the diaphragm 52 includes a peripherally extending flange 54 resting on the flange 22 of the bottom member 20 in a substantially liquid tight manner while under the pressure exerted by the associated surfaces of the cap the tightening of which serves to seal in a liquid tight manner the peripheral junction between the top member 52 and the bottom member as well as the neck 12 of the container through the sealed interengagement between the bead 58 and top edge 13 of the container 11.
  • a depending skirt 56 extends downwardly from the flange 54 and it terminates in an inwardly extending bead 58 which is conveniently received by the recess 48 for purposes of maintaining the top member 52 and bottom member 20 associated and in an assembled condition following pump assembly and prior to placement across the opening in the neck of the container 11.
  • the association of the bead 58 in the recess 48 cooperates in sealing the mating and associated surfaces of the top member 52 and bottom member 20. This seal is perfected and optimized as a result of the interengagement of surfaces of the downward projection 60 on the flange 54 and the recess 50 in the flange 22.
  • the diaphragm 52 further includes a flexible body portion 62 extending inwardly of the flange 54.
  • An upstanding circular rib 64 is disposed interiorly of the flexible portion 62 and operates to seal against the bottom face of the top 17 of the cap 15 when the pump 10 is in a fully retracted position.
  • a flat transverse shoulder 66 extends inwardly of the rib 64 and serves as a bearing surface against which pressure is applied to subject the pump to its pumping cycle for purposes of dispensing liquid.
  • a downwardly depending enlarged boss 68 serving as a valve extends downwardly of the shoulder 66 interiorly of the flexible portion 52.
  • the interior of the boss 68 includes a substantially inverted conical surface 70 joined with a conical surface 72 for association with the complementary surfaces of a plunger generally designated by numeral 74 which, together with the bottom substantially rigid member 20 and flexible diaphragm 52, defines a pump chamber 76.
  • a plunger generally designated by numeral 74 which, together with the bottom substantially rigid member 20 and flexible diaphragm 52, defines a pump chamber 76.
  • the flange 54 of the diaphragm 52 is provided with one or more openings 78 which communicate with the circular recess 44 and the ambient atmosphere particularly when the pump is actuated through its pumping cycle and during its retraction cycle.
  • the plunger 74 which cooperates in deflecting the diaphragm 52 during the pumping cycle whereby the capacity of the pump chamber 76 is varied and also in providing passage of liquid during dispensing and filling of the pump chamber 76.
  • the plunger 74 includes a lower end 82 provided with at least one flat section 84 which cooperates with the adjacent surfaces of the inner surfaces 32 of the tube 30 in defining a liquid passage therebetween.
  • the lower end or stem 82 serves to define the path of reciprocation of the plunger 74 through its cooperation with the associated surfaces of the tube 30.
  • the upper end of the plunger 74 includes a tubular portion 86 defining a bore 88 which is open at the upper end of the tubular portion 86 and terminates approximately midway between the ends of the plunger 74.
  • the inner end of the bore 88 communicates with radial or transverse holes 90 which, during the pumping stroke, communicates with the liquid pump chamber 76.
  • the opening 90 is adapted to be closed or sealed by opposed surfaces of the boss 68 of the diaphragm 52 during the retraction of the plunger 74 while, on the other hand, this valving arrangement is adapted to be opened under the influence of the internal liquid pressure built up in the pump chamber 76 as a result of the downward stroke of the plunger 74.
  • the central section of the plunger 74 is provided with a conical portion 92 and an inverted conical portion 94 both of which are complementary with the conical surfaces 70 and 72 of the boss 68 of the diaphragm 52.
  • the base of the conical portion 92 defines a shoulder 96 with the lower end of the plunger.
  • a spring 98 is disposed against this shoulder 96 as well as the flat face 26 of the base member 20; and in this manner, the plunger 74 is biased upwardly whereby the spring will be compressed during the pumping stroke and the plunger 74 will be urged towards its extended upward position during the retraction stroke.
  • a radially extending rib 100 is disposed between the upper conical portion 94 and tubular end 86 of the plunger 74 for engaging with the shoulder 66 of the central enlarged boss 68 of the diaphragm 52 during the pumping stroke to thereby assure downward deflection of the diaphragm 52 as the plunger is shifted downwardly.
  • the radial rib 100 is also adapted to serve as a stop by engaging the wall 17 to thereby limit the extent of retraction of the plunger 74. Ordinarily, the rib 100 will be disposed as shown in FIG. 2 prior to actuation of the pump.
  • a plunger actuator 102 is advantageously fixed to the upper end 86 of the plunger 74.
  • the actuator 102 includes an inner concentrically disposed apron 104 which is adapted to assume a substantially friction fit with the upper end 86 of the plunger 74.
  • An outer concentric skirt 106 is disposed about the exterior of the skirt 18 of the cap for cooperating in guiding the path of travel of the actuator 102 and its general disposition on the plunger 74.
  • a duct 108 is provided in the actuator 102 and advantageously communicates with the bore 88 of the plunger 74 as well as with a dispensing opening or, as shown in the illustrated embodiment, a break-up nozzle 110. It should be understood that either sufficient clearance is present between the skirt 106 and skirt 18 to permit air flow therebetween or air passages of conventional form between the skirts are provided for this purpose.
  • Air within the annular space 114 will pass through the opening 78 at the periphery of the diaphragm 52 into the annular recess 44 of the base member 20 through the passageway 46 into the head space within the interior of the container 11.
  • the disposition of parts is essentially depicted in FIG. 2 at which point a seal will be provided between the upper edge 64 of the diaphragm! 52 and the lower face of the substantially flat plate 17 to thereby provide an essentially fluidtight engagement which will prevent leakage of the container contents during shipment or inadvertent tilting, inclining or dropping of the container.
  • an airtight seal is provided to prevent undesirable penetration to the container interior of any foreign borne particulate matter.
  • the stroke of the plunger 74 may be regulated by one of a number of conventional means; and, as shown in the illustrated embodiment, the end of the pumping stroke is controlled by the permissible compression of the spring 98.
  • each of the conical surfaces 70 and 72 and their associated surfaces 94 and 92, respectively, may assume different angular relations relative to the axis of the plunger 74 and may be of a shape other than conical as, for example, hyperbolic or parabolic.
  • the selected design should, as in the illustrated embodiment, provide for a substantially liquid type seal closing the radial openings 90 in the plunger 74 during the rest or non-use position of the pump and particularly during the retraction stroke of the plunger 74.
  • the seal should provide a substantially leak-proof juncture at all times between the diaphragm 52 and the plunger 74 while permitting during the pumping stroke the separation of the conical face 72 and the opposed conical face 92 to thereby permit passage therebetween of the liquid Within the pump chamber 76 through the opening 90 and eventually out through the nozzle or opening 110.
  • the container 11, as previously stated, may be either metal, glass or plastic or similar material.
  • the material of the base member 20, cap and the actuator 102 together with the plunger 74 is preferably selected from a wide range of rigid materials such as metal, plastics, hard rubber or the like.
  • the material of the diaphragm 52 should, preferably, possess flexibility and may be selected from a wide range of natural or synthetic elastomeric materials such as polyethylene, rubber, Buna, or any other flexible elastic material.
  • Locking means are provided for preventing the accidental operation of the pump 10 either through inadvertence or during shipment or storage.
  • the locking means may assume one of a number of constructions and, as shown in the illustrated embodiment, locking means 120 releasably locks the actuator 102 relative to the cap 15 to prevent initiation of the pumping cycle at times other than during actual use of the dispenser.
  • This locking means 120 includes concentrically disposed ribs 122 projecting up wardly from the substantially flat top 17 of the cap 15. These ribs 122 may converge from their base to their upper end substantially as shown. Similar ribs or lugs 124 are disposed concentrically and extend downwardly from the actuator 102.
  • the lugs 122 may be of substantially flat configuration
  • the lugs 124 are arcuate as shown in plan in FIGS. 7 and 8.
  • the lugs 124 similarly converge from their base to their lower ends and also include at these ends a recess 126 which is so dimensioned that in the locked position (see FIG. 2) the recess 126 of the lugs 124 will engage and accommodate the upper end of the ribs 122.
  • this engagement will be released (see FIG. 8) to permit initiation of the pumping cycle.
  • the depth of the recesses 126 may be suflicient to provide for snapping into place of the lugs 122 and 124 thereby indicating to the operator that the locked position has been reached while, at the same time, reducing the tendency of the part from inadvertently or accidentally unlocking.
  • the resiliency and elasticity of parts permit deliberate and intended releasing of the locking means 120 when the actuator 102 is turned either in a clockwise or counterclockwise direction.
  • the dispensing of the container contents may be summarized as follows. Assuming for purposes of this description that the liquid to be dispensed is contained in the pump chamber 76, the actuator 102 is manually depressed downwardly to initiate the pumping stroke. If, on the other hand, liquid is not present in the chamber 76, the following pumping cycle should be repeated until the pump is primed and liquid to be dispensed is present in the chamber 76. During the pumping cycle, the plunger 74 is forced downwardly. The rib 100 will engage the substantially flat face 66 of the diaphragm 52 to cause the diaphragm to deflect downwardly.
  • the lower c'onical face 72 of the boss 68 of the diaphragm 52 will, under the influence of the internal pressure built up within the pump chamber 76, separate from the conical face 92 to permit access to the openings 90.
  • the volume of the pump chamber 76 will be reduced to force the liquid therein under pressure out through the openings through the bore 88 of tube 86 to passage 108 out through the discharge opening or selected nozzle 110.
  • the maximum pumping stroke of the plunger 74 is determined by the permissible compression of the spring 98.
  • the pumping chamber 76 Upon release of the actuator 102 and consequent retraction of the plunger 74 under the influence of spring 98, the pumping chamber 76 will start to expand thereby creating a suction which will draw liquid from the interior of the container 11 up through the tube 42 through the bore of boss 40 past the check valve 36- which will at this stage be forced to unseat. The liquid will be drawn through bore 32 into the pumping chamber 76.
  • the ambient air will flow between the actuator 102 and cap 15 into the annular space 112 and then between the cap plate 17 and plunger 74 into annular space 114 and eventually through the opening 78 into the annular recess 44 through passage 46 into the head space of the container to replenish the volume of liquid drawn into the chamber 76.
  • the spring 98 will eventually cause the annular lip 64 of the diaphragm 52 to seat against the lower face of the plate 17 whereupon the diaphragm 52 will come to rest.
  • the plunger 74 and actuator 102 will assume the position shown in FIG. 2 at which the pumping cycle may be repeated.
  • the openings 90 will have been sealed by the engagement of the conical surface 72 of the diaphragm 52 and the conical surface 92 of the plunger 74.
  • the check valve 36 will be seated against the valve seat 34 to trap the liquid to be dispensed in the chamber 76. The above pumping cycle need only be repeated for further dispensing of the liquid.
  • a dispensing pump for use and incorporation on a container for a material to be dispensed comprising in combination:
  • a relatively rigid base member adapted to be supported across the opening of a container, said mem ber having an opening and means for communicating said opening with the material to be dispensed, first valve means for closing the opening during the dispensing of said material and unseating to provide communication between the opening and the material to be dispensed in the container;
  • a relatively flexible diaphragm having peripheral portions thereof in fluid-tight engagement with associated peripheral portions of the base member, said diaphragm including a central boss defining a central opening;
  • reciprocal plunger extending into the central opening of the diaphragm, said plunger having surfaces cooperable with associated surfaces of the diaphragm boss in providing means for attaching the plunger to the diaphragm for permitting flexing of the diamination of the retraction of the plunger and flexing of the diaphragm away from the base member as well as during pumping and dispensing of the material to be dispensed.
  • a relatively flexible diaphragm having peripheral portions thereof in fluid-tight engagement with associated peripheral portions of the base member, said diaphragm including a central boss defining a central opening;
  • the plunger having surfaces cooperable with associated surfaces of the diaphragm boss in providing means for attaching the plunger to the diaphragm for permitting flexing of the diaphragm phragm upon reciprocation of the plunger, the plung- 10 upon reciprocation of the plunger, the plunger having er having an interior passage for the dispensing of an interior passage for the dispensing of the material the material to be dispensed, said plunger and said to be dispensed, said plunger and said base member base member and said diaphragm cooperating with and said diaphragm cooperating with one another in one another in defining a pump chamber for condefining a pump chamber for containing the material taining the material to be dispensed, the plunger to be dispensed, the plunger having an opening comhaving an opening communicating with the plunger municating with the plunger passage and adapted to passage and adapted to communicate with the pump communicate with the
  • a relatively rigid base member adapted to be supported across the opening of a container, said member having an opening and means for communicating said opening with the material to be dispensed, first valve means for closing the opening during the dispensing of said material and unseating to provide communication between the opening and the material to be dispensed in the container;
  • the first valve means closing the base member opening upon termination of the retraction of the plunger and flexing of the diaphragm away from the base member as well as during pumping and dispensing of the material to be dispensed.
  • a dispensing pump for use and incorporation on a container for a material to be dispensed comprising in combination:
  • a relatively rigid base member adapted to be supported across the opening of a container, said member having an opening and means for communicating said opening with the material to be dispensed, first valve means for closing the opening during the dispensing of said material and unseating to provide communication between the opening and the material to be dispensed in the container;
  • a relatively flexible diaphragm having peripheral portions thereof in fluid-tight engagement with associated peripheral portions of the base member, said diaphragm including a central boss defining a central opening, the base member and the diaphragm including interengaged substantially circular peripheral portions and connection means defined by the interengaged peripheral portions of the base member and the diaphragm structurally connecting the base member to the diaphragm and sealing means defined by the interengaged peripheral portions of the base member and diaphragm for providing a fluid-tight connection between the base member and the diaphragm;
  • a reciprocal plunger extending into the central opening of the diaphragm, said plunger having surfaces cooperable with associated surfaces of the diaphragm boss in providing means for attaching the plunger to the diaphragm for permitting flexing of the diaphragm upon reciprocation of the plunger, the plunger having an interior passage for the dispensing of the material to be dispensed, said plunger and said base member and said diaphragm cooperating with one another in defining a pump chamber for containing the material to be dispensed, the plunger having an opening communicating with the plunger passage and adapted to communicate with the pump chamber for permitting flow of the material from the pump chamber into the plunger passage, surfaces of the plunger adjacent the plunger opening and associated surfaces of the boss defining a second valve means for sealing the plunger opening during filling of the pump chamber and for opening the plunger opening during the dispensing of the material to be dispensed from the pump chamber into the plunger passage;
  • air network means for permitting the passage of air from the ambient into the container to replenish the volume of the material to be dispensed which is drawn from the container interior into the pump chamber, the interengaged peripheral portions of the base member and the diaphragm defining part of the air passage network, the air passage network including at least one opening extending through the peripheral portions of the diaphragm and a substantially circular recess in communication therewith in the peripheral portions of the base member and a passage in the peripheral portions of the base member communicating with the recess and adapted to communicate with the interior of the container;
  • the diaphragm when moved in the opposite direction away from the base member upon retraction of the plunger increasing the volume of the pump chamber and closing the plunger opening by the second valve means and causing the unseating of the first valve means to open the base member opening to the material to be dispensed in the container thereby permitting the material to be dispensed in the container to enter the pump chamber with the first valve means closing the base member opening upon termination of the retraction of the plunger and flexing of the diaphragm away from the base member as 5.
  • connection means defined by the associated surfaces of the plunger of the diaphragm boss include a radial flange on the plunger adapted to engage with complementary surfaces of the diaphragm during the downward reciprocation of the plunger and the flexing of the diaphragm towards the base member.
  • a compression spring is biased between surfaces of the plunger and surfaces of the base member for urging the plunger away from the base member thereby facilitating the retraction of the plunger and consequently flexing of the diaphragm away from the base member and increase in volume of the pumping chamber and filling of the pumping chamber with the material to be dispensed.
  • a plunger actuator is connected with the upper end of plunger for facilitating the reciprocation of the plunger the actuator including a passage communicating with the passage of the plunger for directing the material to be dispensed.
  • the container comprises a neck defining an opening and having an upper end and said pump extending across the opening defined by the neck, and the peripheral portions of the base member and the diaphragm resting on the neck end, a cap connected with the container neck and supporting the pump across the neck opening, the cap having a center opening and the upper end of the plunger extending through the cap opening, a plunger actuator connected with the upper end of the plunger for facilitating the reciprocation of the plunger and having an opening for cooperating with the plunger passage for facilitating the dispensing of the material to be dispensed and directing it in accordance with the selected dispensing pattern, and a dip tube interconnecting the base member opening with the material to be disepnsed in the container.
  • the pump includes means operable for locking said plunger relative to said cap against accidental pumping operation.
  • the locking means comprises a group of first locking members connected to said cap and a group of second locking members connected with relation to said plunger, the members of one group being movable together relative to the members of the other group in a path, each member of said one group having a free face making, when its member is moved through said path, contact with the free face of a member of the other group, and means operably for releasably interlocking said faces during said contact.
  • a dispensing pump for use and incorporation on a container for material to be dispensed comprising in combination:
  • a relatively rigid base member adapted to be supported across the opening of a container, said member having an opening and means for communicating said opening with the material to be dispensed, first valve means for closing the opening during the dispensing of said material and unseating to provide communication between the opening and the material to be dispensed in the container;
  • said movable member movable relative to the rigid base having peripheral portions thereof in fluidtight engagement with associated portions of the base member, said movable member including a central boss defining a central opening;
  • a reciprocal plunger extending into the central opening of the movable member, said plunger having surfaces cooperable with associated surfaces of the boss in providing means for attaching the plunger to the movable member for permitting movement of the movable member upon reciprocation of the plunger, the plunger having an interior passage for the dispensing of the material to be dispensed, said plunger and said base member and said movable member cooperating with one another in defining a pump chamber for containing the material to be dispensed, the plunger having an opening communicating with the plunger passage and adapted to communicate with the pump chamber for permitting flow of the material from the pump chamber into the plunger passage, surfaces of the plunger adjacent the plunger opening and associated surfaces of the boss defining a second valve means for sealing the plunger opening during filling of the pump chamber and for opening the plunger opening during the dispensing of the material to be dispensed from the pump chamber into the plunger passage the boss including a double cone surface defining the central opening of the movable member of the upper portion of the cone surface being
  • air network means for permitting the passage of air from the ambient into the container to replenish the volume of the material to be dispensed which is drawn from the container interior into the pump chamber;
  • the movable member when moved by the plunger in one direction, for pumping, towards the base member being adapted to reduce the volume of the pump chamber thereby pressurizing the material to be dispensed in the pump chamber and, at the same time, causing the second valve means to open the plunger opening whereupon the material in the pump chamber is adapted to flow into the plunger passage and the dispensed therefrom;
  • the movable member when moved in the opposite direction away from the base member upon retraction of the plunger increases the volume of the pump chamber and closing the plunger opening by the second valve means and causing the unseating of the first valve means to open the base member opening to the material to be dispensed in the container thereby permitting the material to be dispensed in the container to enter the pump chamber with the first valve means closing the base member opening upon termination of the retraction of the plunger and movement of the movable member away from the base member as well as during pumping and dispensing of the material to be dispensed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
US706104A 1968-02-16 1968-02-16 Self-sealing leak-proof pump Expired - Lifetime US3452905A (en)

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US70610468A 1968-02-16 1968-02-16

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US (1) US3452905A (enrdf_load_stackoverflow)
DE (1) DE1907358C3 (enrdf_load_stackoverflow)
FR (1) FR2002077A1 (enrdf_load_stackoverflow)

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653416A (en) * 1968-09-30 1972-04-04 Francispam Gas lighter filling means
US3995774A (en) * 1975-09-12 1976-12-07 Diamond International Corporation Liquid dispenser having deformable diaphragm type pump
DE2645089A1 (de) * 1975-10-10 1977-04-21 Leeds & Micallef Betaetigungsvorrichtung fuer einen ausgabemechanismus fuer fluessige, halbfluessige oder gasfoermige substanzen
DE2649007A1 (de) * 1975-10-29 1977-05-12 Afa Corp Handbetriebener fluessigkeitsspender
US4033487A (en) * 1975-10-08 1977-07-05 Leeds And Micallef Double trigger pump
US4088425A (en) * 1977-01-10 1978-05-09 Bennett Robert A Manually operated pump for disposable container
US4113145A (en) * 1973-03-08 1978-09-12 Philip Meshberg Dispensing unit for liquid and method of dispensing
US4138039A (en) * 1976-10-04 1979-02-06 Leeds And Micallef Pump actuating system
US4174052A (en) * 1977-12-20 1979-11-13 James D. Pauls, Ltd. Mechanically operated dispensing device with expansible bulb
US4241853A (en) * 1978-05-17 1980-12-30 James D. Pauls And J. Claybrook Lewis And Associates, Limited Dispenser for either continuous or intermittent discharge
US4589573A (en) * 1982-06-29 1986-05-20 Canyon Corporation Head depression type dispenser
US4694977A (en) * 1983-10-28 1987-09-22 Ing. Erich Pfeiffer Gmbh & Co. Kg Fluid dispenser
EP0274877A1 (en) * 1986-12-16 1988-07-20 The English Glass Company Limited Dispenser pump
FR2626253A1 (fr) * 1988-01-26 1989-07-28 Aerosol Bouchage Ste Fse Pompe a precompression
US4863070A (en) * 1987-07-07 1989-09-05 Raimund Andris Meter pump for liquid and/or low-viscosity substances
US4892232A (en) * 1988-07-25 1990-01-09 Martin James H Unit dose dispenser
US5671884A (en) * 1995-07-31 1997-09-30 D.B. Smith & Co., Inc. Backpack sprayer with an expandable accumulator chamber
WO1998015473A1 (en) * 1996-10-07 1998-04-16 Contico Sprayers International, Inc. Manually operated fluid pump for dispensing lotion and the like
US5755361A (en) * 1996-01-11 1998-05-26 The Fountainhead Group, Inc. Pump sprayer
US6173869B1 (en) 1999-09-23 2001-01-16 Color Access, Inc. Multi-piston, ratcheted dispensing device
US20030132252A1 (en) * 2000-05-30 2003-07-17 Eric Rossignol Diaphragm pump
US6755327B1 (en) 2001-08-29 2004-06-29 Richard H. Davey, Inc. Dispensing pump with deformable pump wall and positive shut-off
US20050189382A1 (en) * 2002-09-06 2005-09-01 Leafgreen Limited Dip tubes
US20070075096A1 (en) * 2005-10-04 2007-04-05 Brainard John P Blister pump dispenser
US20090140009A1 (en) * 2007-11-30 2009-06-04 Pin-Yen Chen Pump for bottle
US20110030551A1 (en) * 2009-08-07 2011-02-10 Victor Ribera Turro Pump device and methods of making the same
US20150034678A1 (en) * 2012-04-27 2015-02-05 Pibed Limited Foam dispenser
US20150136810A1 (en) * 2012-05-16 2015-05-21 Yaowu Ding Press-type liquid pump
US20170157631A1 (en) * 2015-12-03 2017-06-08 Kao Germany Gmbh Dispenser pump and method for operating a dispenser pump
US20170246648A1 (en) * 2016-02-25 2017-08-31 Albea Lacrost Pump for a Receptacle, in Particular a Bottle for a Cosmetic Product, and a Dispensing Device Comprising Such a Pump
US10138971B1 (en) * 2018-01-03 2018-11-27 Silgan Dispensing Systems Corporation Dispensing pump with polymer compression spring assemby
US10526191B1 (en) 2018-09-27 2020-01-07 Silgan Dispensing Systems Corporation Dispensing tap and methods for using the same
US10794445B2 (en) 2018-01-03 2020-10-06 Silgan Dispensing Systems Corporation Dispensing pump with polymer compression spring assembly
US10870123B2 (en) 2018-01-03 2020-12-22 Silgan Dispensing Systems Corporation Dispensing pump with locking structures and methods of using the same
US10898916B1 (en) * 2018-12-24 2021-01-26 Albea Services Pump for cosmetic product vial provided with air purging means
US10926281B2 (en) * 2018-12-24 2021-02-23 Albea Le Treport Pump for cosmetic product vial, sealed under low-pressure conditions
US11035429B2 (en) 2018-01-03 2021-06-15 Silgan Dispensing Systems Corporation Compression spring assembly and methods of using the same
US11060580B2 (en) 2018-01-03 2021-07-13 Silgan Dispensing Systems Corporation Compression spring assembly and methods of using the same
US11203026B2 (en) * 2017-11-21 2021-12-21 Yaowu Ding Liquid pump
US11236794B2 (en) 2018-01-03 2022-02-01 Silgan Dispensing Systems Corporation Dispensing pump with polymer spring, base venting and flow baffle
US11253881B2 (en) * 2020-03-06 2022-02-22 Donggi P&I Co., Ltd. Pump assembly of non-metal pump type cosmetic container
US20220062931A1 (en) * 2019-01-03 2022-03-03 Yaowu Ding Lotion pump
US11267009B1 (en) * 2021-01-25 2022-03-08 The Procter & Gamble Company Manually operated dispensing pump
US11312613B2 (en) 2018-09-27 2022-04-26 Silgan Dispensing Systems Corporation Dispensing tap and methods for using the same
US11471902B2 (en) * 2020-06-18 2022-10-18 Sung Jin Cosmetics Co., Ltd. Cosmetic container and pumping apparatus therefor
US11548193B2 (en) * 2018-05-31 2023-01-10 Silgan Dispensing Systems Le Treport S.A.S. Method for producing a guiding rod for a pump
US11844723B2 (en) 2019-04-26 2023-12-19 Aptar Radolfzell Gmbh Dispenser for discharging pharmaceutical liquids
US20240299964A1 (en) * 2023-03-10 2024-09-12 Ningbo Lao Plastic Technology Co., Ltd. Full-plastic vacuum pump head and vessel with the pump head
US12121919B1 (en) * 2023-11-10 2024-10-22 Byung Sun Min Spring and pumping-type container including same

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JPS57502053A (enrdf_load_stackoverflow) * 1980-12-30 1982-11-18
SE440598B (sv) * 1983-11-29 1985-08-12 Meteve Ab Sugpump for drenering av kroppshaligheter

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US3257961A (en) * 1964-04-23 1966-06-28 Holmes T J Co Pump
US3187960A (en) * 1964-05-08 1965-06-08 Sterling Drug Inc Non-metallic pump dispenser
US3331559A (en) * 1964-05-12 1967-07-18 Vaporisateurs Marcel Franck S Liquid atomizers

Cited By (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653416A (en) * 1968-09-30 1972-04-04 Francispam Gas lighter filling means
US4113145A (en) * 1973-03-08 1978-09-12 Philip Meshberg Dispensing unit for liquid and method of dispensing
US3995774A (en) * 1975-09-12 1976-12-07 Diamond International Corporation Liquid dispenser having deformable diaphragm type pump
US4033487A (en) * 1975-10-08 1977-07-05 Leeds And Micallef Double trigger pump
DE2645089A1 (de) * 1975-10-10 1977-04-21 Leeds & Micallef Betaetigungsvorrichtung fuer einen ausgabemechanismus fuer fluessige, halbfluessige oder gasfoermige substanzen
US4157774A (en) * 1975-10-10 1979-06-12 Leeds And Micallef Dispensing pump with trigger actuator
FR2387363A1 (fr) * 1975-10-10 1978-11-10 Partnership Leeds And Micallef Pompe distributrice a commande par levier
DE2649007A1 (de) * 1975-10-29 1977-05-12 Afa Corp Handbetriebener fluessigkeitsspender
US4138039A (en) * 1976-10-04 1979-02-06 Leeds And Micallef Pump actuating system
US4088425A (en) * 1977-01-10 1978-05-09 Bennett Robert A Manually operated pump for disposable container
US4174052A (en) * 1977-12-20 1979-11-13 James D. Pauls, Ltd. Mechanically operated dispensing device with expansible bulb
WO1981000220A1 (en) * 1977-12-20 1981-02-05 James Pauls Ltd Mechanically operated dispensing device with expansible bulb
FR2461531A1 (fr) * 1977-12-20 1981-02-06 Pauls Ltd James D Dispositif distributeur de fluide commande mecaniquement a poche dilatable
US4241853A (en) * 1978-05-17 1980-12-30 James D. Pauls And J. Claybrook Lewis And Associates, Limited Dispenser for either continuous or intermittent discharge
US4589573A (en) * 1982-06-29 1986-05-20 Canyon Corporation Head depression type dispenser
US4694977A (en) * 1983-10-28 1987-09-22 Ing. Erich Pfeiffer Gmbh & Co. Kg Fluid dispenser
EP0274877A1 (en) * 1986-12-16 1988-07-20 The English Glass Company Limited Dispenser pump
US4867347A (en) * 1986-12-16 1989-09-19 The English Glass Company Limited Dispenser pump
US4863070A (en) * 1987-07-07 1989-09-05 Raimund Andris Meter pump for liquid and/or low-viscosity substances
EP0330530A1 (fr) * 1988-01-26 1989-08-30 Société Française d'Aérosols et de Bouchage Pompe à précompression
US4936492A (en) * 1988-01-26 1990-06-26 Societe Francais D'aerosols Et De Bouchage Precompression pump
FR2626253A1 (fr) * 1988-01-26 1989-07-28 Aerosol Bouchage Ste Fse Pompe a precompression
US4892232A (en) * 1988-07-25 1990-01-09 Martin James H Unit dose dispenser
US5857618A (en) * 1995-07-31 1999-01-12 D.B. Smith & Co., Inc. Backpack sprayer with an expandable accumulator chamber
US5671884A (en) * 1995-07-31 1997-09-30 D.B. Smith & Co., Inc. Backpack sprayer with an expandable accumulator chamber
US5984199A (en) * 1995-07-31 1999-11-16 The Fountainhead Group Backpack sprayer with an expandable accumulator chamber
US5755361A (en) * 1996-01-11 1998-05-26 The Fountainhead Group, Inc. Pump sprayer
US5775547A (en) * 1996-10-07 1998-07-07 Continental Sprayers Internatioal, Inc. Lotion dispensing pump with sealing plug for sealing pump chamber
WO1998015473A1 (en) * 1996-10-07 1998-04-16 Contico Sprayers International, Inc. Manually operated fluid pump for dispensing lotion and the like
US6173869B1 (en) 1999-09-23 2001-01-16 Color Access, Inc. Multi-piston, ratcheted dispensing device
WO2001021505A1 (en) 1999-09-23 2001-03-29 Color Access, Inc. Multi-piston, ratcheted dispensing device
US20030132252A1 (en) * 2000-05-30 2003-07-17 Eric Rossignol Diaphragm pump
US6712243B2 (en) * 2000-05-30 2004-03-30 Rexam Smt Diaphragm pump
US6755327B1 (en) 2001-08-29 2004-06-29 Richard H. Davey, Inc. Dispensing pump with deformable pump wall and positive shut-off
US20050189382A1 (en) * 2002-09-06 2005-09-01 Leafgreen Limited Dip tubes
US7644841B2 (en) 2005-10-04 2010-01-12 Brainard John P Blister pump dispenser
US20070075096A1 (en) * 2005-10-04 2007-04-05 Brainard John P Blister pump dispenser
US20090140009A1 (en) * 2007-11-30 2009-06-04 Pin-Yen Chen Pump for bottle
US20110030551A1 (en) * 2009-08-07 2011-02-10 Victor Ribera Turro Pump device and methods of making the same
US20150034678A1 (en) * 2012-04-27 2015-02-05 Pibed Limited Foam dispenser
US9073066B2 (en) * 2012-04-27 2015-07-07 Pibed Limited Foam dispenser
US20150136810A1 (en) * 2012-05-16 2015-05-21 Yaowu Ding Press-type liquid pump
US9539597B2 (en) * 2012-05-16 2017-01-10 Yaowu Ding Press-type liquid pump
US20170157631A1 (en) * 2015-12-03 2017-06-08 Kao Germany Gmbh Dispenser pump and method for operating a dispenser pump
US10010896B2 (en) * 2015-12-03 2018-07-03 Kao Germany Gmbh Dispenser pump and method for operating a dispenser pump
US10525493B2 (en) * 2016-02-25 2020-01-07 Albea Lacrost Pump for a receptacle, in particular a bottle for a cosmetic product, and a dispensing device comprising such a pump
US20170246648A1 (en) * 2016-02-25 2017-08-31 Albea Lacrost Pump for a Receptacle, in Particular a Bottle for a Cosmetic Product, and a Dispensing Device Comprising Such a Pump
US11203026B2 (en) * 2017-11-21 2021-12-21 Yaowu Ding Liquid pump
US10138971B1 (en) * 2018-01-03 2018-11-27 Silgan Dispensing Systems Corporation Dispensing pump with polymer compression spring assemby
US10495173B2 (en) 2018-01-03 2019-12-03 Silgan Dispensing Systems Corporation Dispensing pump with polymer compression spring assembly
US11754137B2 (en) 2018-01-03 2023-09-12 Silgan Dispensing Systems Corporation Compression spring assembly and methods of using the same
US10794445B2 (en) 2018-01-03 2020-10-06 Silgan Dispensing Systems Corporation Dispensing pump with polymer compression spring assembly
US10870123B2 (en) 2018-01-03 2020-12-22 Silgan Dispensing Systems Corporation Dispensing pump with locking structures and methods of using the same
US11541410B2 (en) 2018-01-03 2023-01-03 Silgan Dispensing Systems Corporation Dispensing pump with locking structures and methods of using the same
WO2019136003A1 (en) * 2018-01-03 2019-07-11 Silgan Dispensing Systems Corporation Dispensing pump with polymer compression spring assembly
US11035429B2 (en) 2018-01-03 2021-06-15 Silgan Dispensing Systems Corporation Compression spring assembly and methods of using the same
US11060580B2 (en) 2018-01-03 2021-07-13 Silgan Dispensing Systems Corporation Compression spring assembly and methods of using the same
US11236794B2 (en) 2018-01-03 2022-02-01 Silgan Dispensing Systems Corporation Dispensing pump with polymer spring, base venting and flow baffle
US11548193B2 (en) * 2018-05-31 2023-01-10 Silgan Dispensing Systems Le Treport S.A.S. Method for producing a guiding rod for a pump
US11312613B2 (en) 2018-09-27 2022-04-26 Silgan Dispensing Systems Corporation Dispensing tap and methods for using the same
US10994985B2 (en) 2018-09-27 2021-05-04 Silgan Dispensing Systems Corporation Dispensing tap and methods for using the same
US11858799B2 (en) 2018-09-27 2024-01-02 Silgan Dispensing Systems Corporation Dispensing tap and methods for using the same
US10526191B1 (en) 2018-09-27 2020-01-07 Silgan Dispensing Systems Corporation Dispensing tap and methods for using the same
US10898916B1 (en) * 2018-12-24 2021-01-26 Albea Services Pump for cosmetic product vial provided with air purging means
US10926281B2 (en) * 2018-12-24 2021-02-23 Albea Le Treport Pump for cosmetic product vial, sealed under low-pressure conditions
US11638925B2 (en) * 2019-01-03 2023-05-02 Yaowu Ding Lotion pump
US20220062931A1 (en) * 2019-01-03 2022-03-03 Yaowu Ding Lotion pump
US11844723B2 (en) 2019-04-26 2023-12-19 Aptar Radolfzell Gmbh Dispenser for discharging pharmaceutical liquids
US11253881B2 (en) * 2020-03-06 2022-02-22 Donggi P&I Co., Ltd. Pump assembly of non-metal pump type cosmetic container
US11471902B2 (en) * 2020-06-18 2022-10-18 Sung Jin Cosmetics Co., Ltd. Cosmetic container and pumping apparatus therefor
US11267009B1 (en) * 2021-01-25 2022-03-08 The Procter & Gamble Company Manually operated dispensing pump
US20240299964A1 (en) * 2023-03-10 2024-09-12 Ningbo Lao Plastic Technology Co., Ltd. Full-plastic vacuum pump head and vessel with the pump head
US12121919B1 (en) * 2023-11-10 2024-10-22 Byung Sun Min Spring and pumping-type container including same

Also Published As

Publication number Publication date
DE1907358A1 (de) 1969-09-11
DE1907358C3 (de) 1979-07-05
FR2002077A1 (enrdf_load_stackoverflow) 1969-10-03
DE1907358B2 (de) 1978-11-02

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