US3362343A - Liquid dispenser - Google Patents

Liquid dispenser Download PDF

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Publication number
US3362343A
US3362343A US530855A US53085566A US3362343A US 3362343 A US3362343 A US 3362343A US 530855 A US530855 A US 530855A US 53085566 A US53085566 A US 53085566A US 3362343 A US3362343 A US 3362343A
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US
United States
Prior art keywords
plunger
valve
sealing
movement
cylinder
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
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US530855A
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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.)
CLAMAR Inc
Silgan Dispensing Systems Corp
Original Assignee
CLAMAR Inc
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Publication date
Application filed by CLAMAR Inc filed Critical CLAMAR Inc
Priority to US530855A priority Critical patent/US3362343A/en
Priority to DE1653402A priority patent/DE1653402C3/de
Priority to GB9445/67A priority patent/GB1171947A/en
Priority to FR97078A priority patent/FR1512926A/fr
Priority to JP42013051A priority patent/JPS4827241B1/ja
Application granted granted Critical
Publication of US3362343A publication Critical patent/US3362343A/en
Assigned to CALMAR, INC., 333 SOUTHL TURNBULL CANYON ROAD, CITY OF INDUSTRY, CA A CORP OF DE reassignment CALMAR, INC., 333 SOUTHL TURNBULL CANYON ROAD, CITY OF INDUSTRY, CA A CORP OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: DIAMOND INTERNATIONAL CORPORATION
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

Definitions

  • dispensing pumps adapted for application to portable containers in which various liquid products are sold and in which the pumps are particularly adapted for application to the -lilled containers at the factory to 4be sulbsequently sh-ipped with the lled containers to suitable sources of distribution.
  • dispensers be equipped with suita'ble shipping seals adapted for preventing leakage of the liquid, either through the pump discharge passages or between the pump cylinder and plunger, incident to rough handling or inversion of the containers. It is also desirable that such shipping lseals ybe effec-tive in either the fully-projected or the fullydepressed position of the plunger so that the same basic pump structure may 4be shipped with the plunger in either position, except that where the pump and its associated container are to be shipped with the plunger in its fullyprojected position, the usual means for locking it in a fully-depressed position may be omitted.
  • a fricti-onal coupling or telesc-oping clutch connection between the plunger and the inlet valve stem.
  • This connection is rendered operative only near the extremity of the plunger retraction movement (on its suction stroke) to transmit a seating force to the inlet valve upon inception of the next-ensuing compression stroke of the plunger.
  • Such frictional coupling is established by frictional reception of an enlargement of the valve stem in a constricted portion of the plunger discharge passage.
  • an additional frictional connection or coupling between the plunger and inlet valve established only as the plunger nears its fully-depressed position.
  • This coupling which is estab-lished incident to the complete depressing Iof the plunger, opera-tes to exert an unseating force on the pump inlet valve on the inception of the next suction stroke of the plunger and is automatically discontinued after but a brief projection movement of the plunger in order to -avoid interference with the continued plunger movement.
  • this additional frictional connection also may serve the function of a sealing valve or plug operative in the fully depressed position of the plunger.
  • the inlet valve is both seated and unseated by movement of the plunger from either extremity of its movement; and, in addition, the plunger discharge passage is effectively sealed when the plunger is at either extremity of its movement.
  • sealing valve for relative movement between axially-sp'aced por-ts in the discharge passage of the plunger, incident to reciprocation of the latter, and for alternate seat-ing Irelative to these ports at opposite extremities of the plunger movement, to thus provide effective shipping seals at either extremity of the plunger movement.
  • the sealing valve is so associated with one of its said sealing ports yas to be capable of ybeing forced there-through to an operative position between the alternate ports, thus facilitating assembly of these parts. Also, provision is made for simultaneously seating of the inlet valve and the sealing valve by direct engagement between the sealing valve and a plunger seat or port in the fully-depressed position of the plunger and for maintenance of a constant resilient seating pressure of both of these valves with ⁇ their associated ports by forming either or both of the valve seats around said ports of elastically expansible material, to be expanded by seating therein of conical portions of the sealing and/or inlet valves.
  • the invention also provides an improved external seal (that is, a seal externally of the plunger between the plunger and -cylinderl in which the seal is rendered operative only at the extremity of the plunger movement and is rendered inoperative throughout the major portion of the plunger stroke in either direction, -both to avoid impeding the plunger stroke and also to establish communication of the container interior with the exterior atmosphere so as to permit the entry of air to take the place of liquid removed by the pump.
  • an improved external seal that is, a seal externally of the plunger between the plunger and -cylinderl in which the seal is rendered operative only at the extremity of the plunger movement and is rendered inoperative throughout the major portion of the plunger stroke in either direction, -both to avoid impeding the plunger stroke and also to establish communication of the container interior with the exterior atmosphere so as to permit the entry of air to take the place of liquid removed by the pump.
  • the invention employs a novel arrangement of sealing ring or gasket which encircles the plunger rod and is interposed between ythe plunger rod and cylinder.
  • the plunger rod is formed to cooperate with the said sealing ring in lthe manner of a slide valve and, for this purpose, is formed with suitably-positi-oned enlargements adapted to enter the sealing ring, preferably at fboth extremities of the plunger movement, so as to compress the ring radially between the opposed Wall portions of the cylinder and plunger. Between such enlargements, the plunger rod is Ifo-rmed to permit a suicient flow or seepage of air for venting purposes.
  • FIGURE l is a sectional view in an axial plane through a reciprocating pump structure in accordance Iwith the invention wherein said structure is supported in a heretofore-known manner in a container closure.
  • the plunger of the pump is in its fully-projected position;
  • FIGURE 2 is a view similar to FIGURE l, but with the plunger secured in its fully-depressed position;
  • FIGURE 3 is a section on the line 3--3 of FIGURE l showing certain details of the inlet valve construction.
  • the pump structure is adapted to be supported in the outlet of a liquid container to dispense the contents thereof.
  • the pump cylinder 10 which is here exemplified as the stationary portion of the pump, is provided with a conventional fianged collar 12 at its upper end.
  • This collar 12 extends through and supports the pump cylinder within an opening defined by the top wall 13 of a container closure, here illustrate-d as provided with a depending internally-threaded skirt 14 4for application in usual manner to the externally-threaded neck or spout of a bottle or other usual container, not here illustrated.
  • the upper and lower fianges 16 and 17 respectively of the collar 12 project above and below the closure top wallr13 to secure the collar in place within the central opening lof the closure wall 13, the upper flange 16 being formed, preferably Iby a swaging action in known manner, after the collar has been inserted through the opening to bring the pre-formed flange 17 into abutment with the lower surface of the top wall. It will be apparent that the threading of the closure 13 onto the container will clamp to the lower fiange 17 against the upper end of the container neck or spout.
  • the annular sealing rib 1S of the lower flange exemplifies any conventional means for providing fluid-tight engagement of the flange 17 with the bottle neck.
  • the major portion of the pump cylinder 10, as well as of the pump in its entirety, will normally be housed within the container with its lower end communicating with the container contents through an axially-directed inlet port 20 which, in the preferred embodiment, is defined by the elastically-stretchable or deformable upper end extension 21 of the dip tube 22 through which the inlet port 20 is placed in communication with the lower end portion of the container so as to be capable of withdrawing substantially the entire liquid contents therefrom.
  • An inlet valve 23 permits the flow of liquid upwardly through the inlet port 20 and prevents its downward flow from the pump chamber 30.
  • the reciprocable portion 25 of the pump here shown is exemplified by the tubular plunger, generally designated 25, and including a hollow plunger rod 26 which is received with substantial clearance in the cylinder 10, together with the anular piston 27 of relatively-greater diameter having an outwardly and downwardly-flaring skirt 28 in operative wiping engagement with the inner wall surface of the cylinder to define a variable volume pump chamber 30 in the lower end portion of the cylinder between the piston 27 and the inlet port 20 ⁇ in the lower end wall of the cylinder.
  • the passage 29 through the plunger opens upwardly thereinto from the pump chamber 3f) into communication with other passages leading to the outlet or discharge orifice of the plunger, as hereinafter described.
  • the plunger 25 is resiliently projected upwardly on its suction stroke by the coil spring 31 which encircles the lower end extension 32 of its plunger rod 26 and is compressed between the piston 27 and a spring seat 33 jointly defined by the axially upwardly-presented ends of a series of annularly-arranged and relatively circumferentially spaced splines 34 formed integrally with and projecting radially inwardly from the inner wall of the cylidner concentrically to the inlet valve port 20.
  • splines or keys 35 of a peripherally-splined disc 36 projecting radially outwardly beyond the base of the conical valve body 24 and preferably afiixed thereto as an integral portion of the valve.
  • the splines 35 thus extend radially outwardly beneath the lower convolution of the plunger spring 31, which thus serves as a stop -for limiting the unseating movement of the inlet valve 24.
  • the plunger rod 26 extends upwardly for axial movement through the sealing ring 38 and the open upper end of the cylinder 10 for actuation in conventional manner by intermittently-applied finger pressure against its upper end.
  • the plunger 25 includes at its upper end a generallyconventional plunger discharge head 40, which may tbe constructed in a manner heretofore known and formed to provide an upwardly presented button or fingerpiece 41 adapted to receive the actuating finger pressure.
  • the plunger discharge head40 is fabricated separately from the rest of the plunger, as an integral plastic molding having a blind socket 42 to be fitted yover the upper end of the plunger rod 26 in snug fiuid-tight relation therewith and secured in place thereon, as ⁇ for instance by means of cooperating snap rings and grooves 43.
  • the plunger head here shown is in the form of a spray head and to this end is formed with a restricted spray discharge orifice 45 communicating with a swirl chamber 46 which, in turn, is supplied with fluid through a groove 47 from the inner end portion of the socket 42.
  • This groove or passage 47 in turn, communicates with the axial passage 29 through the plunger.
  • the said intercommunicating passages jointly define the plunger discharge passage leading from the pump chamber upwardly to and through the discharge orifice 45.
  • the inlet valve 23 in addition to its modes of operation as hereinafter described, also is adapted to function in the manner of a conventional check valve, to open in response to suction created by the up-stroke of the plunger whereby to admit liquid through the inlet port 20r into the pump chamber 30 and to be seated by pressure created Within the pump chamber on the compression stroke of the plunger.
  • an upper check valve may be served by the restricted orifice 45 of the spray head in a manner well known in the art, it will generally be desirable to achieve somewhat greater efiiciency through provision of such a check valve 48, in cooperation with the valve seat 5t) within the plunger.
  • the stop finger 51 depending from the plunger head into the upper end of the axial plunger passage 29, limits the unseating movement of the valve 48.
  • the means herein illustrated for purposes of exemplication are conventional, and comprise an externallythreaded plug 55 at the base of the plunger head 4t)l for cooperating reception in the internally-threaded collar 12 of the cylinder 10.
  • the plug 55 is also illustrated as being provided with radially and axially-projecting annular seals 56 and 57 respectively for engagement with cooperating sealing surfaces of the collar, all in a manner now well known.
  • seals 56 and 57 are merely optional.
  • the inlet valve 23 is provided with an axially upwardly-directed and substantially-rigid valve stem 58 which projects axially into the discharge passage 29 of the plunger, and is freely movable in such passage through a sealing valve port 59, through which it passes with sufficient clearance as to permit substantially unimpeded uid flow.
  • a sealing valve 60 Carried at the free end of the valve stem 58 is a sealing valve 60 which is positioned for alternate seating at opposite extremities of the plunger movement with the sealing port 59 and with the further sealing port 61.
  • Port 61 is spaced axially along the passage from the port 59 at such a distance as to cause said ports to cooperate with the valve 60 at opposite extremities of the plunger movement, it being apparent that the latter is movable within predetermined limits .governed by the engagement of the plunger with the inlet valve on the one hand and by the abutting engagement between the annular plunger stop surface 37 and sealing ring 38 on the other hand.
  • the valve 60 ⁇ is provided with a conical upper end portion 60a converging toward the port 61 and adapted for sealing reception therein.
  • the port 61 in the present instance is defined by the lower end of a sleeve 62 depending from and constituting an integral portion of the valve seat 50, and of an elastically-expansible material such that the valve seat defined by the lower end of the sleeve 62 at port 6-1 is circumferentially expanded by sealing reception of the conical valve portion 60a.
  • valve stem The seating pressure between these parts is transmitted through the valve stem to the inlet valve 23, and the oppositelydirected and elastically-expanded valve seats operate in similar manner in conjunction with their conical valve portions 6a and 24 respectively to maintain a constant resilient seating engagement with these portions as long as the plunger is locked in its fully-depressed position.
  • the sealing valve 60 is provided with la substantially-cylindrical portion 60h proportioned for snug frictional sealing reception in the port or constriction 59.
  • a tapered pilot portion 60C of the sealing valve 60 extends from the cylindrical portion 60h toward the constriction 59 to guide the enlarged portion 6G17 into the constriction of port 59.
  • the sealing valve 60 will seat in the port 59 when the plunger is fully projected to the upper or outer limit of its stroke by action of the plunger spring 31, the upward movement of the valve 60 having been previously arrested by cooperation of the spring 31 and splined disc 34. Moreover, by virtue of the relationship of the sealing valve 60 and the constricted port 59, it Vwill be apparent that the valve 60 may be readily assembled in operative position for movement between the two ports or seats 59 and 61 simply by inserting it into the lower or inner end of the plunger passage and forcing it through the constriction 59.
  • valve 60 cooperates with the constricted port or seat 59 to establish a frictional coupling between the plunger and the inlet valve at the end of each suction stroke of the plunger, so that, at the inception of a downward or compression stroke of the plunger, its movement is frictionally transmitted to the inlet valve 23 to seat same.
  • the frictional coupling will be disengaged by continued downward movement of the plunger.
  • a further frictional coupling between the plunger 25 and valve 23 for unseating of the conical valve portion 24, at the inception of the upward or suction stroke of the plunger from its fully-depressed position as shown in FIGURE 2, is provided by means of a cylindrical plug 65 carried by and preferably formed integrally with the valve 23.
  • This plug 65 is proportioned for snug frictional reception in the lower end of the plunger passage 29 below the piston 27.
  • This plug 65 also is preferably provided with a conical guide portion 66 to facilitate its entry into the passage incident to the downward movement of the plunger.
  • valve seat 61 at the lower end of sleeve 62 exerts a positive seating force which is transmitted to the inlet valve 24 through its stem 58.
  • the relatively-thicker and heavier plunger extension 32 cooperates with the relatively lighter and resiliently or elastically expandable lower end of the sleeve 62 to gauge and limit the expansion of the latter by affording a positive limit for relative downward movement of the plunger onto the seated inlet valve 24.
  • Such exterior seals comprises the combined sealing ring and plunger stop 38 which, as earlier mentioned, encircles the plunger 25 and is positioned in the cylinder 10 within a groove 39 by which it is secured against substantial axial displacement when engaged by the reciprocating plunger.
  • the upper end wall of the groove 39 preferably is of substantial radial extent to afford a positive limit for preventing upward displacement of the ring 38, and, therefore, in the preferred embodiment, is formed by an integral inwardly projecting radial rib 68 within the pump cylinder adapted for reception of the plunger with a slight clearance.
  • the ring 38 may be formed of a material such as natural rubber, polyethylene, or the like, capable of being sufficiently deformed to permit its insertion downwardly through the rib 68 and adapted thereafter to expand outwardly into resilient sealing engagement with the bottom of the groove 39.
  • the pump barrel is provided with a usual vent or opening 69 above the piston 28 and preferably just below the ring 38 to permit the escape back into the container of any liquid which might have :become trapped in the cylinder above the piston 27 and such as might, in the absence of a vent, interfere with the movement of the plunger as well as cause upward leakage of liquid past the sealing ring 38.
  • the portion 71 of the plunger which -moves through the sealing ring 38 throughout the major part of the plunger stroke in either direction, is of sufficientlyreduced diameter relative to the ring as to have a slight clearance therewith, as is apparent in FIGURE l. Accordingly, when the plunger is in various intermediate positions between the extremities of its stroke, communication is establishedbetween the vent 69 and the atmosphere between the inner periphery of the sealing ring 38 and the plunger rod, through the open upper end of the cylinder.
  • the plunger is formed with cylindrical enlargements 72 and 73 respectively positioned for sealing reception in the ring 38 at opposite extremities of the plunger movement.
  • the ring 38 is adapted for limiting and sealing engagement with the plunger in the upwardly-projected position of the latter, in the manner exemplified in FIG- URE l, in which the sealing ring is shown to be axially compressed between the annular stop rim or ledge 37 of the plunger and the stop rib y68 within the cylinder.
  • stop ring 38 may assume various forms, it has been found that one suitable cross sectional shape of the ring is as illustrated, in which the sarne is provided with radially-inner and outer pairs of relatively upwardly and downwardly diverging conical skirts 74, 74', 75, '75 respectively, connected to each other and to the main body of the ring 38 along a radial plane midway of the axis of the ring.
  • skirts 75, 75 Will normally be deflected somewhat radially inwardly by and seal against the ⁇ bottom of the groove 39, while the inner peripheries of the respective skirts 74, 74 are proportioned for sealing engagement with the respective plunger enlargements 72 and 73 and for clearance with the reduced intervening plunger portion 71.
  • the ring also comprises oppositely axially-diverg ing pairs of conical skirts 76, 76 and 77, 77 of which the radially outer and radially inner such skirts 76 and 77 respectively are adapted for sealing engagement with I the rib 68 and with the annular sealing ledge or shoulder 37 of the plunger.
  • the sealing ring 38 in addition to its function as a stop for determining such position, has both of its sealing skirts 75, 75' and also its skirt 74 in resilient radial sealing engagement with the cylinder and plunger respectively, while its upper and lower skirts 76 and 77 are in axial sealing engagement with the stop rim 68 and stop ledge 77 respectively.
  • the sealing ring may be formed to omit the skirts 76, 76', 77, 77', and to utilize the remaining skirts 74, 74' and 75, 75' for both purposes.
  • the sealing ring is capable of other cross sectional forms as will be obvious to those skilled in the art.
  • the linvention in its preferred form is capable of assembly from a small number of parts which, except as to the plunger spring and ball check Ivalve, are adapted to lbe molded in conventional manner of usual plastic materials.
  • the cylinder may be formed of a comparatively rigid plastic material and assembled to the container cap in conventional manner by pressing or swaging the rib 16 therein after insertion of the collar portion through the opening within the container closure.
  • the castellated shoulder 78 which is formed externally around the cylinder in accordance with conventional practice affords means for supporting the cylinder within the conventional tool both to withstand both axial thrust imposed thereon incident to the swaging of rib 16 and the torsional force incident to holding the cylinder 10 against rotation where, after assembly of the several parts, the pump plunger is locked in its fully-depressed position by simultaneously depressing and rotating same with its externally-threaded plug 55 engaged in the threaded collar 16.
  • inlet valve 23 is capable of assembly within the cylinder merely by dropping it downwardly into the cylinder through the open upper end thereof, following which the spring 31 may similarly be dropped into position around the stem of the valve 23. After insertion of the stop ring 38 into position, same may be resiliently expanded to permit insertion of the plunger. The flexible piston skirt will at the same time be radially compressed to pass through the ring.
  • the plunger components namely the ball check valve 48 and plunger discharge head 40, may be assembled after the assembly of the plunger and cylinder, and the swaging of the stop rib 68.
  • the seats around the ports 61 and 2) respectively are elastically expanded by the cooperating conical valve portions a and 24 so that the elastic contracting tendency of these ports, acting on the conical surfaces 60a and 24 maintains a constant resilient thrusting and seating force on both valve portions 60a and 24 against their respective ports.
  • the enlargement or upper valve portion 72 of the plunger is at this time received within the stop ring 38 to resiliently compress the said stop ring radially between the opposed faces of the enlargement 72 and the bottom of groove 39.
  • any liquid which may have entered the cylinder through the vent 69 or have leaked upwardly past the plunger skirt or piston 28, will be confined against escape past the sealing ring 38 which thus coacts with the plunger and pump cylinder to define an effective external seal.
  • the plunger spring 31 immediately expands to project the plunger upwardly and outwardly on its suction stroke.
  • the frictional coupling provided by the interengaged plug portion 65 of the inlet valve and the plunger exerts a positive unseating force on the inlet valve to free the latter in the event it should have become stuck in place.
  • This function is augmented by the resiliently-contracting tendency of the expanded valve seat 21.
  • the somewhat expanded valve seat of the port 61 and the sealing valve 60a cooperate in a manner to free themselves.
  • the reduced diameter plunger portion 71 moves freely and with clearance through the sealing ring 38, during which time air from the atmosphere is free to seep downwardly between the ring and the open end of the pump cylinder and thence into the container through the vent 69 to replace liquid withdrawn by the pumping action.
  • the upper pump valve 48 will normally be seated to produce a relatively-reduced pressure or suction within the pump chamber 30; or if the ball valve 48 is omitted, the discharge orifice 45 may be proportioned to produce a similar though less efficient function.
  • the sealing valve 16 being restrained against upward movement by its connection to the inlet valve, will be frictionally received and seated in sealing relation within the constricted port 59 of the plunger, as shown in FIGURE l.
  • the suction st-roke of the plunger will then be terminated by abutment between the plunger stop ledge or shoulder 37 and the Vsealing ring 38.
  • pump chamber 30 communicates freely with the container through the inlet port and tube 22, but the plunger passage is firmly sealed by seating of the valve 60 in port 59 of the plunger.
  • an external seal is provided by the interengaged plunger ledge 37 and sealing ring 38 by virtue both of the axial sealing engagement aforementioned, as well :as of the radial sealing engagement of the plunger enlargement 73 Within the sealing ring.
  • the plunger cooperates with the sealing ring in the manner of a slide valve to seal off the vent opening 78 from communication with the atmosphere in either the fully-projected or fully-depressed positions of the plunger, while permitting such communication during normal operation of the plunger.
  • the -plunger may obviously be reciprocated repeatedly to eject the desired amount of liquid, following which it may either be left in its fully-projected position, under the action of the plunger spring 31, or, if desired, may be locked in its fully-depressed position, in the manner shown in FIGURE 2.
  • the actuation of the inlet valve 23 and its associated sealing valve 60 will occur independently of gravity, through the transmission of frictional seating and unsealing forces from the plunger.
  • the ball valve 48 may be eliminated and its function taken over, for instance, by a sufficiently-constricted discharge orifice 45 ofthe plunger head or ⁇ by a spring-loaded valve.
  • the action of the sealing valve or plug 65 will similarly be controlled by the plunger position independently of gravity.
  • the plunger will be effectively sealed internally in either its fully-projected or fully-depressed position and will be fully sealed externally by the coaction between the plunger rod and the sealing ring in the manner of a slide valve.
  • a reciprocating liquid pump including a pump cylinder having an inlet port through one axial end thereof, an inlet valve disposed in said cylinder for axial movement within pre-determined limits into and from seating relation with said inlet port, and a plunger disposed for axial movement within pre-determined limits in said cylinder on suction and compression strokes respectively away from and toward said inlet port, said plunger being provided with an axial discharge passage therethrough;
  • sealing valve seats are located relatively adjacent and remote from said inlet port respectively, the valve stem being disposed for free movement through the port defined by said relativelyadjacent valve seat, friction clutch means on said valve stem normally positioned for relative movement between said sealing valve seats and proportioned for axial reception in and frictional radial engagement with said relativly-adjacent valve seat at the limit of each suction stroke of the -plunger to transmit a yieldable axial seating force from the plunger of the inlet valve on the inception of each compression stroke of the plunger.
  • said friction clutch means comprises the sealing valve, said sealing valve being proportioned for seating and sealing radially against the inner periphery of said adjacent sealing valve seat while frictionally engaging same.
  • said plunger includes a third downwardly-directed annular sealing valve seat, a second sealing valve being carried by said valve stem in position to seat against said third sealing valve seat near the limit of the compression stroke of the plunger.
  • said inlet valve comprises a plug directed axially toward said plunger and positioned for snug liquit-tight reception in said lplunger discharge passage near the limit of the compression stroke of said plunger.
  • said inlet port and said relatively-remote sealing seat are defined by yradially expansible annular means, said inlet valve and said sealing valve having conical portions for simultaneous sealing reception in the said inlet port and relatively-remote sealing seat, whereby the elastic contacting tendency of the respectively-annular means will maintain a constant resilient seating thrust of said annular means against the respective conical portions.
  • a reciprocating liquid pump including a pum-p cylinder having an inlet port through one axial end thereof, an inlet valve disposed in said cylinder for axial movement within pre-determined limits into and from seating relation with said inlet port, and a plunger disposed for axial movement within pre-determined limits in said cylinder on suction and compression strokes respectively away from and toward said inlet port, said plunger being provided with an axial discharge passage therethrough;
US530855A 1966-03-01 1966-03-01 Liquid dispenser Expired - Lifetime US3362343A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US530855A US3362343A (en) 1966-03-01 1966-03-01 Liquid dispenser
DE1653402A DE1653402C3 (de) 1966-03-01 1967-02-28 Auslaßventilanordnung
GB9445/67A GB1171947A (en) 1966-03-01 1967-02-28 Improvements in or relating to Reciprocating Liquid Pumps.
FR97078A FR1512926A (fr) 1966-03-01 1967-03-01 Pompe distributrice de liquide à plongeur portant deux sièges de soupape
JP42013051A JPS4827241B1 (de) 1966-03-01 1967-03-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US530855A US3362343A (en) 1966-03-01 1966-03-01 Liquid dispenser

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US3362343A true US3362343A (en) 1968-01-09

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Application Number Title Priority Date Filing Date
US530855A Expired - Lifetime US3362343A (en) 1966-03-01 1966-03-01 Liquid dispenser

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US (1) US3362343A (de)
JP (1) JPS4827241B1 (de)
DE (1) DE1653402C3 (de)
FR (1) FR1512926A (de)
GB (1) GB1171947A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680986A (en) * 1970-11-09 1972-08-01 Louis F Kutik Pump with mechanical assist
EP0065214A2 (de) * 1981-05-09 1982-11-24 Aero-Pump GmbH, Zerstäuberpumpen Handbetätigte Pumpe zum Entleeren eines Behälters
US5326237A (en) * 1993-03-08 1994-07-05 Dupont Industries, Inc. High volume pump with valve tube
US5513800A (en) * 1990-10-25 1996-05-07 Contico International, Inc. Low cost trigger sprayer having pump with internal spring means
US5715973A (en) * 1996-02-01 1998-02-10 Contico International, Inc. Manually operated fluid pump for dispensing lotion and the like
US5775547A (en) * 1996-10-07 1998-07-07 Continental Sprayers Internatioal, Inc. Lotion dispensing pump with sealing plug for sealing pump chamber
US5794821A (en) * 1996-05-07 1998-08-18 Contico International, Inc. Reciprocating liquid pump with disc check valve for dispensing lotion and the like
US20150316012A1 (en) * 2012-12-18 2015-11-05 Delphi International Operations Luxembourg S.A.R. L. Pump unit
US10926281B2 (en) * 2018-12-24 2021-02-23 Albea Le Treport Pump for cosmetic product vial, sealed under low-pressure conditions
CN114981015A (zh) * 2019-11-15 2022-08-30 泰普勒斯特有限责任公司 下部锁定波纹管泵

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5047850U (de) * 1973-09-03 1975-05-12
JPS5327881A (en) * 1976-08-26 1978-03-15 Heihachirou Toshi Container adapted to expel viscous material
US4496082A (en) * 1981-12-18 1985-01-29 Corsette Douglas Frank Liquid dispensing pump
IT8221773V0 (it) * 1982-05-04 1982-05-04 Sar Spa Pompetta a mano con cappuccio erogatore vincolabile in posizione abbassata, per l'erogazione di sostanze fluide.
DE3641104A1 (de) * 1986-12-02 1988-06-16 Edeco Gmbh Hubpumpe, insbesondere zur foerderung von erdoel aus einer tiefbohrung
US4991747A (en) * 1988-10-11 1991-02-12 Risdon Corporation Sealing pump
US5524793A (en) * 1994-07-21 1996-06-11 Emson, Inc. Dispensing pump which is lockable and sealable for transporation and storage
EP2805051B1 (de) * 2012-01-20 2019-12-11 Alfred Kärcher SE & Co. KG Kolbenpumpe für ein hochdruckreinigungsgerät

Citations (1)

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Publication number Priority date Publication date Assignee Title
US3228347A (en) * 1963-10-24 1966-01-11 Calmar Inc Pump

Patent Citations (1)

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US3228347A (en) * 1963-10-24 1966-01-11 Calmar Inc Pump

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680986A (en) * 1970-11-09 1972-08-01 Louis F Kutik Pump with mechanical assist
EP0065214A2 (de) * 1981-05-09 1982-11-24 Aero-Pump GmbH, Zerstäuberpumpen Handbetätigte Pumpe zum Entleeren eines Behälters
EP0065214A3 (de) * 1981-05-09 1983-01-26 Aero-Pump GmbH, Zerstäuberpumpen Handbetätigte Pumpe zum Entleeren eines Behälters
US5513800A (en) * 1990-10-25 1996-05-07 Contico International, Inc. Low cost trigger sprayer having pump with internal spring means
US5326237A (en) * 1993-03-08 1994-07-05 Dupont Industries, Inc. High volume pump with valve tube
US5715973A (en) * 1996-02-01 1998-02-10 Contico International, Inc. Manually operated fluid pump for dispensing lotion and the like
US5794821A (en) * 1996-05-07 1998-08-18 Contico International, Inc. Reciprocating liquid pump with disc check valve for dispensing lotion and the like
US5927561A (en) * 1996-05-07 1999-07-27 Continental Sprayers International, Inc. Reciprocating liquid pump with disc check valve for dispensing lotion and the like
US5775547A (en) * 1996-10-07 1998-07-07 Continental Sprayers Internatioal, Inc. Lotion dispensing pump with sealing plug for sealing pump chamber
US20150316012A1 (en) * 2012-12-18 2015-11-05 Delphi International Operations Luxembourg S.A.R. L. Pump unit
US10926281B2 (en) * 2018-12-24 2021-02-23 Albea Le Treport Pump for cosmetic product vial, sealed under low-pressure conditions
CN114981015A (zh) * 2019-11-15 2022-08-30 泰普勒斯特有限责任公司 下部锁定波纹管泵

Also Published As

Publication number Publication date
FR1512926A (fr) 1968-02-09
DE1653402C3 (de) 1974-08-01
GB1171947A (en) 1969-11-26
DE1653402A1 (de) 1971-09-16
JPS4827241B1 (de) 1973-08-21
DE1653402B2 (de) 1974-01-10

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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