US3162335A - Adjustable liquid dispenser - Google Patents

Adjustable liquid dispenser Download PDF

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Publication number
US3162335A
US3162335A US96827A US9682761A US3162335A US 3162335 A US3162335 A US 3162335A US 96827 A US96827 A US 96827A US 9682761 A US9682761 A US 9682761A US 3162335 A US3162335 A US 3162335A
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United States
Prior art keywords
metering chamber
stem
liquid
outlet
inlet
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Expired - Lifetime
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US96827A
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English (en)
Inventor
Henry W Kogan
James C Budde
Arthur J Wisniewski
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.)
American Radiator and Standard Sanitary Corp
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American Radiator and Standard Sanitary Corp
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Publication date
Priority to FR1317875D priority Critical patent/FR1317875A/fr
Application filed by American Radiator and Standard Sanitary Corp filed Critical American Radiator and Standard Sanitary Corp
Priority to US96827A priority patent/US3162335A/en
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Publication of US3162335A publication Critical patent/US3162335A/en
Anticipated expiration legal-status Critical
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4418—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of liquids
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents
    • D06F39/022—Devices for adding soap or other washing agents in a liquid state

Definitions

  • the present invention relates to an adjustable liquid dispensing device. More particularly, this invention relates to a device for storing and metering an adjustable amount of a liquid additive into home appliances, such for example, as clothes or dishwashing machines and into vending machines, such for example, as coffee or soft drink machines.
  • liquid dispensing device One desirable feature of such a liquid dispensing device is that it be operable with a minimum number of component parts. Simplicity of design results in reducing manufacturing costs. Manufacturing costs are, of course, ⁇ vitally important when consideiing the addition of an ancillary device to an appliance. Preferably, rthe dispenser is not of the type that kwill break down under normal ⁇ use and need expensive servicing. should be rugged and durable in use. Another important feature is that the device have accurate adjustable metering means. A small metering error is very significant in proportion to the small total amount of additive dispensed in each operation.
  • an object of the invention is to provide a liquid dispensing device which will automatically dispenseadjustable metered amounts of liquid.
  • Another object is to provide an electrically-operatedl dispensing device which may be conveniently correlated with the cycle of the machine with which it is used.
  • a further object is to provide a structure having a storage container of suliicient capacity to dispense the required amount Y of liquid wetting agent, detergent, bleach, or other additive for a large number of operations.
  • Another object is to provide a dispenser which is operated by an electric solenoid but in which the solenoid Itl 3,162,335 Patented Dec. 22, 1964 lCe which is rapid acting to dispense the required amount of liquid in a very short period of time.
  • Another object is to provide a dispensing device of the universal type which can be constructed to handle many different kinds of liquid.
  • a yet further object is to provide a ⁇ device which is self-priming to avoid the necessity Afor a mechanism to ll the metering chamber after each dispensing operationn
  • FIGURE l is a front elevational view partly in section showing one embodiment of the present invention.
  • FIGURE 2 is a sectional View taken substantially along line 2-2 of FIGURE l looking in the direction of the arrows and showing the solenoid plunger and associated structure utilized to actuate the dispenser mechv arr-ism; y
  • FIGURE 3 is a sectional view of a portion of the metering chamber of the FIGURE l embodiment showing the relationship of the various parts just prior to a dispensing operation;
  • FIGURE 4 is a sectional view similar to FIGURE 3 showing the relationship of the parts during a dispensing operation
  • FIGURE 5 is a sectional view similar to FIGURE 3 showing the metering chamber during the relling cycle after a dispensing operation;
  • FIGURE 6 is a schematic view of suitable control means for operating the dispenser of FIGURE 1;
  • FIGURE 7 is a side elevational view of a second embodiment of the present invention partly in section for the purpose of clarity.
  • the dispenser comprises a body composed of an upper member l?. and a lower member 14.
  • the upper member 12 is composed of successively larger sections i6, 18, 20, 22.
  • a plurality of circumferential openings 24 are provided in the upper wall 23 of section le and serve as an inlet to the dispenser.
  • the dispenser is adapted to be gravity fed from a liquid reservoir (not shown) positioned thereabove.
  • the reservoir may be directly connected to section 16 or a tube may be connected to section 16 to communicate with a reservoir.
  • a collapsible bellows 26 Positioned within body section 20 is a collapsible bellows 26.
  • the lower peripheral edge portion 28 of the bellows extends into the recess formed by body section 22 and is clamped in this position by reduced-portion 3th of the lower body member 14.
  • the upper and lower body members may be conveniently secured together by screws (not shown).
  • the edge 28 of the bellows forms a iluidtight seal at the juncture of the upper and lower body members.
  • section 32 abuts against al shoulder 36 l.formed by the juncture of sections 18, 2d.
  • the shoulder 3e serves as a stop to limit expansion ofthe bellows.
  • stem 48 extends into opening 50V of the tubular guide 46" and has an enlarged portion 52 which enga-ges the side wall-s of the opening 50 to guide the stem .during stem movement.
  • the stem 48 extends downwardly through anY opening in valve element 38 and has washerV 54 which. abuts against the lower surface of the valve element tohold the valve element against downward movement on'4 Y the stem.V
  • the lower end of-guide stem-48 -i axially extending recess 56 to receive reduced portion 58 of Ya 'second stem 60.
  • the stern 60 k carries Va cup-shaped member 62 which is biased yupwardly by spring 64V into abutment with washer 66 provided on the reduced portion 58.
  • the washer 66 in turn Yabuts against the lower end of the guide stem 48.
  • the spring 64 is stronger than the valve springvr 40, and thus serves to maintainl the guide stem 48 andl attached valve element 38 in the normal nondispensing -position shown.
  • l Member 62 is provided with openings 63l so that it will not block the passage of liquid through bellows opening 34.
  • a ⁇ second bellows element 68 is positioned within the kmain bellows 26.
  • the bellows 68 serves as a sealing element.
  • the upper enlarged resilient portion 70 has an opening 71 through which is inserted reduced stem portion 58 to thus seal the interior ofbellows 68 from the liquid in the dispenser.
  • The-lower endtof the stem 60 exten-is lthrough bellows 68 and thence through an opening 72 in a bracket 74V and is attached to a plunger 76 of an electric solenoid 78.l
  • the .bracket'74 v has a'bossV 80 which ex- Y tends into an opening 82 providedjin thelowerbody ⁇ member 14./
  • the lower peripheralV edge portion of the bellows-68 is clamped between the bracket boss 80 andl the body member 14 to thus seal the body opening 82.
  • the bracket has projections 811,f83.witl1.openingsf85, 87.V
  • a lliquid outlet structurejg ⁇ is provided inbody member14 ⁇ for" vthe dispensing'o'f liquid from the metering chamber.
  • The-body memberflli has a recess formed by opposed interconnected down-vv wardly extending walls 84,VV 86.5An opening 88 is provided' in wall 86.
  • the opening 881s normally closed byk check valve element 9) .which is biased-tothefclosedl position by spr-ing 9,2,An'y internally threaded tubular extension 94.
  • the spout 96 has a plurality of interior as a stop to 'limit outward movement of the valve-element. 90; However, when the Valve element 90 abutsf. f
  • YContinued expansion of the spring 40 is eective to compress the bellows 26 and force the check valve element 90 .to an open position whereupon fluid contained in the meterin-g chamber is discharged from the dispenser spout 96.V Y j 'f
  • the spring 40 will continue to compressthe bellows 26 until the lower end'of stem 48 again engages the washer 66 carried on stem 60.
  • the length of the stroke of the plunger 76 determines the amount of compression of Ythe bellows 26 and thus controls the amountA of uid dispensed from the dispenser.y Y p Means are provided to adjust the length of the stroke fof the plunger .76 to permit dispensing adjustable amounts of liquid.
  • the adjusting means comprises 4a cam 114 which is operative to position adjusting arm 116y to'set the plunger forthe desiredlength of stroke.
  • the arm 116 ' is pivotally mounted intermediate itsy ends on projection ⁇ 81 of the braeket'74by-pin! 120.v
  • the ears ⁇ 124, 126 extend ⁇ around plunger ears 106, l108 and abutagainst theplunger surface 128.y
  • the outer end of the arm 116 threadingly receives screw 130 having a headi132-in pressure contact with the outer periphery of the cam 114.
  • the head 132 is maintained in pressure contact with the cam by-I means of spring 134 which extends from the arm-into engagement Vwith vthev cam shaft 136;
  • the spring is prevented from sidewise movement on shaft 136 by a washer 138.
  • the cam.- 114 comprises a circular element mounted 'for Vrotation on the 'shaft 136.
  • Actuation of the dispenser may be conveniently correlated with the timing mechanism conventionally employed in automatic appliances.
  • a typical arrangement is shown in FIGURE 6.
  • a source of power 142 has leads 144, 146 applied to the coil 112 of the solenoid.
  • a normally open switch 148 is provided in lead 145.
  • a ca-m 150 which may be mounted on the cam shaft of the timing mechanism, is provided to close the switch at the desired time in the washing cycle.
  • FIGURE 7 illustrates a second embodiment of the invention.
  • the dispenser 154 comprises body member 156 which is formed integrally with a reservoir structure 158.
  • An inlet passageway 160 leads downwardly from the reservoir 158 and opens into metering chamber 162 for gravity feed into the metering chamber.
  • An outlet passageway 164 leads downwardly from the metering chamber.
  • Port 166 in the outlet passageway is normally closed by ball valve element 168 which is biased to the closed position by fa spring 170.
  • Flexible diaphragm 1'72 forms one wall of the metering chamber 162.
  • the diaphragm '172 is held in place by body member cap 174.
  • the peripheral edge portions 176 of the diaphragm act to seal the juncture of body members 156, 174.
  • the diaphragm 172 is biased by a spring 178 to deform and expel fluid contained in the metering chamber through the outlet 166.
  • the spring 178 is inserted over inwardly extending tubular portion 180 of the cap 174.
  • a cup-shaped member 182 is provided to contain spring 178 and abut against the diaphragm.
  • the cup member 182 is carried on a stem 184.
  • the stem 184 extends through'tubular portion 180 and has a reduced threaded section 136 which extends through openings in the cup member and diaphragm.
  • a stiffening plate 188 is inserted over the threaded section 186 and abuts against ythe inner surface of the diaphragm 172. This assembly 'is lheld in place by a nut 19t) which threadingly engages threaded portion 186.
  • a second reduced stem section 192 extends inwardly from the threaded portion 186 towards inlet port 194.
  • the stem section 192 slidingly extends through valve element 196 and terminates' a short distancetherebeyond.
  • a nut 198 is yprovided on the end of the stern section 192 to retain the valve 'element 196.
  • Valve element 196 carries a resilient disc 288 for closure of the port 194.
  • the vrdisc 2410 abuts against radial ⁇ guide anges 202 provided on the periphery of valve element 196.
  • the flanges 282 actas guide members for theY valve element through port y194. yaround the flanges 282 to fill the metering chamber.
  • Liquid can flow, however, 'from the reservoir stifening plate 2214 is provided on the back of disc 200.
  • A-r ⁇ spring 296 abuts against plate 204 at one end'and f against plate 188 at the other end, thus biasing the valve element towards the closed position.
  • the spring 286 is weaker than the spring 178, and is overcome by the spring 178 during a dispensing operation to permit deformation of the diaphragm 172.
  • the stem 184 projects rearwardly through the tubular yportion 180 and terminates exteriorly of'the dispenser body. .
  • the stem ⁇ is guided in a sliding path through tubumade adjustable by lar portion 186 by an enlarged annular section 208.
  • the stem is provided with enlarged annular portion 210 at its outer terminus and with a second enlarged annular portion 212 adjacent thereto.
  • an arm 214 is provided to limit the length of the stroke of the stem 184.
  • Arm 214 is pivotally mounted by means of pin 216 to a bracket 218 which extends outwardly from reservoir structure 158.
  • the arm 214 is a channel section and has ears 22) which project over the stem 184 at a point between annular portion 212 and the dispenser body cap 174.
  • the upper end of the arm 14 is provided with a threadable screw 222, the head of which engages cam wheel 214 which is eccentrically mounted on axis 226 as in the FIGURE l embodiment.
  • a spring 228 maintains the screw and cam in engagement as previously described.
  • the ears 220 of the arm 214 act as stop members to limit inward movement of the stern 184.
  • the arm 214 prevents any inward movement of the stem. This is the zero dispensing position.
  • the arm 214 will permit inward movement of the stem 184 a distance equal to the distance between ears 220 and the enlarged portion 212.
  • a second arm 230 is provided to actuate the diaphragm 172.
  • the arm 230 is pivotally mounted by means of pin 231 on projection 232 which extends downwardly from a bracket 234.
  • the bracket 234 has an opening 236 and is inserted over the dispenser cap 174. Bracket 234 is secured to the dispenser body as by welding.
  • the arm 230 has ears 238 as its lower end which project over the stem 184 between annular enlargements 210, 212.
  • the upper end of arm 238 is curved at 240 and normally abuts against the outer end of solenoid plunger 242.
  • the solenoid plunger 242 is biased outwardly to the position shown by a spring 244. Energization of the solenoid coil (not shown) is effective to withdraw the plunger 242 and permits the arm 230 to pivot in a clockwise direction as viewed in FIGURE 7.
  • the solenoid 242 is Withdrawn, and the spring 178 detorms the diaphragm 172 to reduce the volume of the metering chamber.
  • the action of the spring 178 also carries the stem 184 inwardly to move the disc 280 to close the port 194.
  • the solenoid plunger 242 is again extended, pivoting the arm 230 in a counterclockwise direction to withdraw the diaphragm 172 and eventually open the port 194.
  • the vacuum created in the metering chamber during withdrawal of the diaphragm is effective to draw more iluid from the reservoir into the metering chamber to refill the chamber for the next dispensing operation.
  • Control of theY operation of the dispenser may be integrated intov the appliance timing system as shown in FIGURE 6.
  • Inl a liquid dispenser comprising a body'havinga ,liquidmetering chamber; an inlet to said metering'charn-4 -ber; an outlet from 'said ⁇ metering chamber; valve means solenoid chatter or noise andrwould also cause-excessive wear of the solenoid. ⁇ Slow return of the solenoid plunger does not cause a problem because the, return is effected by a spring. ⁇
  • a liquid dispenser comprising a body having -a liquid metering chamber; anvinlet to said metering chamber; an outlet from said metering chamber; ⁇ valve'means for said inlet operative to open the inlet for filling the metering chamber and to close the inlet during dispensing; valve'means for said outlet operative to close the outlet during filling of the chamber VVand to open the outlet during dispensing; and flexible wall means forming a portion of the wall of said metering chamber; said exible wall means being deformable to expel liquid from the meteringchamber through said outlet; the, improvement -comprising the provision of Vresilient means biasing the ilexiy ble wall means to a deformed position; a slidable steml member normally positioned to oppose said resilient means and prevent deformation of the flexible wall means;v
  • the amount of deformation of the flexible wall means being determined by the length Vof kthestem stroke; and means to adjust the length of the stem ⁇ stroke comprising a stop member on the stern; an armpivotally mounted.
  • a iirstend of saidl arm being positionable along the longitudinal axis Vof the stem;-means associated with a second end of the arm to pivot thearm, and move the iirst end to4 a selected position withrespect to the stem stop member; contact of said first end ywith the stop member yon the stem being effective to determine the length'of the stem stroke.
  • n f Y o i 1 Y In a liquid dispenser comprising a bodyihaving a liquid metering chamber; an inlet to said metering chamber; an outletfrom said metering chamber; valve means for said inlet operativeto open the inlet for filling the metering chamber and to close the'inlet duringdispensing;
  • valve means for said outlet operative to close the'outlet during illing of thechamber and to open the outletV during dispensing; and lexiblewall means forming a portion 'of Y the wall. of said metering chamber;l said flexible wall means being movable toward the outlet to expel liquid from the metering chamber through said outlet; the improvement comprising the provision of resiiient means prisingthe provision ofv resilient means biasing the ilexiblewall meanst'o a deformed position; a slidable stem member' normallypositioned to oppose said resilient means and preventdeformation of the flexible wall means; means-tov move the stem out of its normal opposing position and through a stroke of predetermined length whereby the resilient rmeansisvl effective to deform theexible wall meansV todispense a quantity' of liquid throughsaid outlet; the amount of liquid dispensed 'being determined by the amount of deformationtof the flexible wall means; the amount Vof deformation of .the ilexible wall means being determined by the
  • a liquid dispenser comprising a body having a liquid metering chamber; an inlet. to said metering charnber; an outletfrom saidr meteringrchamber; valve means for said inlet operative to open the inlet for filling the metering chamber and to close the inletduring dispensing; valve means forsaid outlet foperative to close the outlet during filling ofthe chamber and' to open theoutlet during'dispensingfand exible wa'll'means forming a portion' of the Wall of said metering chamber; lsaid flexible wall vmeans being Vmovable toward the outlet to expel liquid from the metering chamber through said outlet; the kimprovement comprising the provision of resilient means biasing 'the ilexiblervvallme'ans toward said outlet; .an electric solenoid having a slidableV plungerinormally positioned to abut against said resilientmeans and prevent movementof theV flexible Wall means; activation ofthe solenoid being-effective to move
  • valve means bannedd being determinedby the amount of movement of the flexible wallgme'ans; the amount of movement of SQA liquid dispenser comprising a body. having a liquid Vmetering chamber; an inlet to said metering chamber; an outlet from said metering chamber; check valve means releasably closing said outlet; a valve element for said inlet; flexible wall means-forming a portion ofthe wall of Asaid metering chamber; said'exible wall'Y means means to ldispenseza quantityof liquid determinedby the ing dispensingyand flexible wall means forming a portion j ofthe wall'off'saidmetering chambeignsaidflexible wall" ymea ⁇ ns leing"Vtleformable to expel liquidfromVA the .meter whereby they esilieiit .being movable toward theoutlettojdispense liquid from therneteringchamber ithroughg'saidjoutlet; resilient means i 1bi-asingisaid;valve elementftocloserandr said
  • the flexible wall means being f. fdetermined by'the'jlength'of the plunger Vstroke; and 7 0imeans to adjust Ythe length Vvofthe plunger stroke.
  • . han liquid dispenser comprising a body having a d metering chamber; an inletjto said meteringchamber; an
  • a liquid dispenser comprising a body having a liquid metering chamber; an inlet to said metering chamber; an outlet from said metering chamber; check valve means releasably closing said outlet; a valve element for said inlet; a flexible bellows forming a portion of the wall of said metering chamber; said bellows being deformable to dispense liquid from the metering chamber through said outlet; resilient means biasing said valve element to close and said bellows to deform; an electric solenoid having a slidable plunger normally positioned to oppose said resilient means and prevent deformation of a bellows; activation of the solenoid being effective to move the plunger out of its normal opposing position and through a stroke of predetermined length whereby the resilient means is effective to bias said valve element to close the metering chamber inlet and to deform the bellows to dispense a quantity of liquid determined by the amount of deformation of the bellows; the amount of deformation of the bellows being determined by the length of the plunger
  • a liquid dispenser comprising a body having a liquid metering chamber; an inlet to said metering chamber; an outlet from said metering chamber; check valve means releasably closing said outlet; a Valve element for said inlet; flexible bellows forming a portion of the wall of said metering chamber; said bellows being deformable to dispense liquid from the metering chamber through said outlet; resilient means biasing said valve element to close and said bellows to deform; an electric solenoid having a slidable plunger normally positioned to oppose said resilient means and prevent deformation of the bellows; activation of the solenoid being effective to move the plunger out of its normal opposing position and through a stroke of predetermined length whereby the resilient means is effective to bias said valve element to close the inlet and deform the bellows to dispense a quantity of liquid determined by the amount of deformation of the bellows; the amount of deformation of the bellows being determined by the length of the plunger stroke; and means to adjust the
  • a liquid dispenser comprising a body having a liquid metering chamber; an inlet to said metering chamber; an outlet from said metering chamber; check valve means releasably closing said outlet; an inlet valve element; flexible bellows forming a portion of the wall of said metering chamber; said bellows being deformable to dispense liquid from the metering chamber through said outlet; resilient means biasing and inlet valve element to close the metering chamber inlet and deform said bellows; an electric solenoid having a slidable plunger normally positioned by second resilient means to oppose said first resilient means; said second resilient means being stronger than said first resilient means to thereby prevent deformation of the bellows; activation of the solenoid being effective to move the plunger against the second resilient means out of its normal opposing position and through a stroke of predetermined length whereby the first resilient means is effective to bias said inlet valve element to close the inlet and to deform the bellows to dispense a quantity of liquid determined by the amount of deformation
  • a liquid dispenser comprising a body having a liquid metering chamber; an inlet to said metering chamber; an outlet from said metering chamber; check valve means releasably closing said outlet; an inlet valve element; a flexible diaphragm forming a portion of the wall of said metering chamber; a stem member operatively connected to said diaphragm; a portion of the stem extending into the metering chamber and slidably carrying said inlet valve element; rst resilient means between the diaphragm and inlet valve element biasing said inlet valve element towards closure of the metering chamber inlet; second resilient means, stronger than said first resilient means, biasing said diaphragm to a deformed position to dispense liquid from the metering chamber through said outlet; an electric solenoid having a slidable plunger operatively connected to said stem and normally positioned to oppose said second resilient means and prevent deformation of the diaphragm; activation of said solenoid being effective to move the solenoi

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Devices For Dispensing Beverages (AREA)
US96827A 1961-03-20 1961-03-20 Adjustable liquid dispenser Expired - Lifetime US3162335A (en)

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299828A (en) * 1964-12-16 1967-01-24 Lox Equip Reciprocating cryogenic pump
US3343728A (en) * 1965-04-13 1967-09-26 Seeburg Corp Metering pump
US3424096A (en) * 1965-08-26 1969-01-28 Orbital Eng Pty Pumps
US3653300A (en) * 1970-04-29 1972-04-04 Lucas Industries Ltd Bellows unit
US3796240A (en) * 1971-11-30 1974-03-12 W Miller Closed fueling device with automatic cutoff
DE2458630A1 (de) * 1973-12-19 1975-07-03 Bendix Corp Kraftstoffventil
US4047851A (en) * 1976-09-27 1977-09-13 Bender Machine Works, Inc. Bellows type expansible chamber pump having separate biasing means
US4393982A (en) * 1979-12-17 1983-07-19 Dagma Deutsche Automaten Und Getrankemaschinen Gmbh & Co. Kg Metered dispensing of liquids
US4850824A (en) * 1986-09-29 1989-07-25 Aktiebolaget Electrolux Arrangement for control of the stroke length
US4852675A (en) * 1988-12-08 1989-08-01 Wang Hsug Fang Apparatus for intermediate transmission of sensed oil pressure in a scale
US5129550A (en) * 1989-01-23 1992-07-14 Battelle Memorial Institute Spray bottle apparatus with force multiply pistons
US5277342A (en) * 1992-12-11 1994-01-11 Loctite Corporation Sealless dispensing apparatus
US5462208A (en) * 1994-08-01 1995-10-31 The Procter & Gamble Company Two-phase dispensing systems utilizing bellows pumps
US5792108A (en) * 1995-10-23 1998-08-11 C. R. Bard, Inc. Self-priming pulsed lavage pump
US6321952B1 (en) * 1998-01-30 2001-11-27 Sanofiosynthelabo Sprayer actuating device
US20080060688A1 (en) * 2006-09-08 2008-03-13 Whirlpool Corporation Dishwashing machine
US20090236367A1 (en) * 2008-03-24 2009-09-24 Fluid Management Operations, Llc Pistonpump in Pistonpump
US20100260632A1 (en) * 2005-04-22 2010-10-14 Heiner Ophardt Foam pump with bellows spring
US20170073208A1 (en) * 2014-05-07 2017-03-16 Khs Gmbh Filling apparatus
CN113152031A (zh) * 2020-01-22 2021-07-23 Bsh家用电器有限公司 具有用于处理剂的储存容器的导水家用器具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506528A (en) * 1947-04-02 1950-05-02 Jr James L Webb Differential pressure injector
US2717500A (en) * 1952-12-10 1955-09-13 Servel Inc Ice maker
US2888174A (en) * 1957-03-11 1959-05-26 Dole Valve Co Liquid measuring and dispensing device
US2951450A (en) * 1956-04-17 1960-09-06 John C Fisher Fluid pump
US2972434A (en) * 1959-01-12 1961-02-21 Nu Way Foundation Bleach and detergent vending machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506528A (en) * 1947-04-02 1950-05-02 Jr James L Webb Differential pressure injector
US2717500A (en) * 1952-12-10 1955-09-13 Servel Inc Ice maker
US2951450A (en) * 1956-04-17 1960-09-06 John C Fisher Fluid pump
US2888174A (en) * 1957-03-11 1959-05-26 Dole Valve Co Liquid measuring and dispensing device
US2972434A (en) * 1959-01-12 1961-02-21 Nu Way Foundation Bleach and detergent vending machine

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299828A (en) * 1964-12-16 1967-01-24 Lox Equip Reciprocating cryogenic pump
US3343728A (en) * 1965-04-13 1967-09-26 Seeburg Corp Metering pump
US3424096A (en) * 1965-08-26 1969-01-28 Orbital Eng Pty Pumps
US3653300A (en) * 1970-04-29 1972-04-04 Lucas Industries Ltd Bellows unit
US3796240A (en) * 1971-11-30 1974-03-12 W Miller Closed fueling device with automatic cutoff
DE2458630A1 (de) * 1973-12-19 1975-07-03 Bendix Corp Kraftstoffventil
US4047851A (en) * 1976-09-27 1977-09-13 Bender Machine Works, Inc. Bellows type expansible chamber pump having separate biasing means
US4393982A (en) * 1979-12-17 1983-07-19 Dagma Deutsche Automaten Und Getrankemaschinen Gmbh & Co. Kg Metered dispensing of liquids
US4850824A (en) * 1986-09-29 1989-07-25 Aktiebolaget Electrolux Arrangement for control of the stroke length
US4852675A (en) * 1988-12-08 1989-08-01 Wang Hsug Fang Apparatus for intermediate transmission of sensed oil pressure in a scale
US5129550A (en) * 1989-01-23 1992-07-14 Battelle Memorial Institute Spray bottle apparatus with force multiply pistons
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