US3327635A - Pumps - Google Patents

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Publication number
US3327635A
US3327635A US510765A US51076565A US3327635A US 3327635 A US3327635 A US 3327635A US 510765 A US510765 A US 510765A US 51076565 A US51076565 A US 51076565A US 3327635 A US3327635 A US 3327635A
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US
United States
Prior art keywords
thrust rod
diaphragm
valve
housing
piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US510765A
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English (en)
Inventor
Norman H Sachnik
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.)
Texsteam Inc
Original Assignee
Texsteam Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Texsteam Inc filed Critical Texsteam Inc
Priority to US510765A priority Critical patent/US3327635A/en
Priority to GB37679/66A priority patent/GB1119278A/en
Priority to NL6615569.A priority patent/NL155635B/xx
Priority to DE1476673A priority patent/DE1476673C3/de
Priority to DE19661725007 priority patent/DE1725007A1/de
Application granted granted Critical
Publication of US3327635A publication Critical patent/US3327635A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/06—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means including spring- or weight-loaded lost-motion devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L23/00—Valves controlled by impact by piston, e.g. in free-piston machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L33/00—Rotary or oscillatory slide valve-gear or valve arrangements, specially adapted for machines or engines with variable fluid distribution
    • F01L33/04—Rotary or oscillatory slide valve-gear or valve arrangements, specially adapted for machines or engines with variable fluid distribution oscillatory
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/06—Venting
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1002—Ball valves
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1087—Valve seats
    • 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
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
    • F04B9/107—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7908—Weight biased
    • Y10T137/7909—Valve body is the weight
    • Y10T137/791—Ball valves
    • Y10T137/7912—Separable seat

Definitions

  • This invention relates in general to a pump, and more particularly to a positive displacement pump, and still more particularly to a single acting, positive displacement plunger-type pump having a novel ball check valve.
  • the pump of the present invention includes an injector unit capable of pumping high pressures and handling a wide range of volume output.
  • Ball check valves are provided in the injector having novel valve seats capable of providing absolute leak-tightness and controlled reseating characteristics.
  • positive displacement plunger pumps or injectors have employed O-ring seals or similar seals in order to eliminate leakage, and it has been found that such is generally unsatisfactory due to the normal manufacturing tolerances in O-ring seals, and further because dilficulty is encountered in machining of the grooves or faces which retain the seals in order to precisely control the amount of compression applied to the seals.
  • the pump of the present invention is pneumatically operated and may be operated by natural gas or compressed air, and includes a diaphragm motor with spring return for operating a reciprocating piston of the pump.
  • the piston is reciprocated by alternately charging and exhausting the diaphragm motor in response to piston movement.
  • a snap-over center device is provided for controlling the operation of a three-way valve effects charging and exhausting of the diaphragm.
  • the snap-over center device includes a flipper arm connected to the valve and in turn connected to a flipper spring that is connected to the pump plunger.
  • Means is provided to give initial movement to the flipper arm and valve to position it between charge and exhaust positions. This means includes a bumper plate that is mounted so that it responds to movement of the pump plunger for overcoming the initial frictional forces in the valve caused primarily by pressure differential across valve parts.
  • another object of the present invention is to provide a pump having a diaphragm motor and a control valve for charging and exhausting the diaphragm motor and which is operable by a snap-over center device responding to movement of the diaphragm motor, wherein means is provided to assure operation of the snap-over center device in overcoming frictional forces in the valve, whereby the problem of pump stalling is eliminated.
  • FIG. 1 is a top plan view of the pump according to the present invention, with the injector head removed;
  • FIG. 2 is an axial sectional view of the pump taken substantially along line 22 of FIG. 1 and also including the injector head;
  • FIG. 3 is a transverse sectional view taken substantially along line 33 of FIG. 1;
  • PEG. 4 is a front elevational view of the control valve, with some parts deleted and other parts shown in dotted lines for purposes of clarity;
  • FIG. 5 is an enlarged transverse sectional View of an insert seat for the ball check valves of the present invention.
  • FIG. 6 is a transverse sectional view of an insert valve body having an insert seat therein, and being on a smaller scale than FIG. 5.
  • An injector device may be required to continually inject as little as one pint of fluid per twenty-four hours but may on occasion be required to inject at the rate of thirty quarts per twentyfour hours for a short time to charge the system or to establish essential concentration of the additive. Such are the requirements of injecting corrosion inhibitors as well as many other ingredients, and the present invention is capable of satisfying these requirements.
  • the pump of the present invention includes a body or casing 11) having an injector head 11 at one end and a diaphragm motor 12 at the other end.
  • a control valve 13 is provided for controlling operation of the diaphragm motor 12.
  • the injector head 11 includes a body 14 having a plunger or piston boss 15 for slidably supporting a plunger or piston 16 operable to pump a fluid through a pumping chamber 17 from an inlet 17a thereof to an outlet 17b thereof. Suitable sealing means 18 is provided at the end of the plunger boss 15 to inhibit leakage of fluid from the pumping chamber 17 along the plunger.
  • the injector 11 is mounted on the body ll? of the pump by providing threads on the plunger boss 15 engageable with a threaded bore 19 in the end of the body.
  • a lockuut 20 is provided to lock the injector 11 in proper position on the pump body 10.
  • a ball check valve 21 is provided at the inlet end of the pumping chamber 17, while a ball check valve 22 is provided at the outlet end of the pumping chamber 17.
  • the ball check valve 21 only permits fluid flow into the pumping chamber, While the ball check valve 22 only permits fluid flow out of the chamber.
  • the ball check valve 21 includes a valve seat 21a and a ball 21b, while the ball check valve 22 includes a valve seat 22a and a ball 22b.
  • the valve seat 21a is mounted in a fitting 23 that is in turn connected to a source of fluid, while the valve' seat 22a is mounted in the body 14 of the injector at the outlet end of the pumping chamber.
  • the ball 21b While the ball 21b is seated by gravitational forces and pressure thereon during the pumping stroke of the plunger 16, the ball 2% is primarily seated by a spring 24 bottomed on a fitting '25 that is in turn connected to a line into which predetermined measured amounts of fluid are desired to be injected.
  • a bleed valve 26 is provided for bleeding of the pumping chamber 17.
  • Each valve seat includes a valve insert body 27 having a valve insert seat 28 secured therein.
  • the insert seat 28 is secured or locked in place in the valve insert body 27 by ring staking the valve body at 27a, although any other suitable means of securing the insert seat may be employed. Further, any suitable sealing means may be provided between the insert seat 28 and the valve body to prevent leakage of fluids therealong.
  • the valve insert body is provided with stepped bores 29 and 3t defining a shoulder 31 therebetween, wherein the insert seat is fitted tightly within the bore 29 and in abutment against the shoulder 31. Suitable means is provided to seal the engagement between the insert seat and the bore 29. As seen particularly in FIG.
  • the insert seat has a cylindrical outer surface 32 that is received in the bore 29, and internal stepped bores 33 and 34 defining therebetween a shoulder 35. Moreover, the upper end of the bore 34 is chamfered at 38 to define the seat for a ball.
  • the main portion of the insert seat is metal, and an annular seal 37 of rubber or suitable resilient material is received within the bore 33 and against the shoulder 35. As a ball moves toward seated position against the seat 36, it first engages sealingly the annular rubber seal 37 providing a. leakproof valve plus control compression thereof before seating solidly onto the metal seat and against the edge 36.
  • the annular rubber seal 37 is molded onto the metal seat to precisely control the relationship of the rubber dimensions relative to the rubber seat.
  • the plunger 1'6 is connected to a rod adapter 38 by means of a pin 39.
  • the rod adapter is received in a bore 40 formed in one end of a thrust rod 41.
  • a shoulder 42 is formed on the rod adapter against which the end of the thrust rod 41 abuts when driving the plunger 16 through the pumping stroke or to the right as seen in FIG. 2.
  • a drip gland 42a is provided at the end of the rod adapter 38 to cause any leakages from the pumping chamber 17 along the plunger rod 16 to drop to the bottom of the casing and be expelled through a drain 4212. This precludes the fluids from the pumping chamber from entering into the main body of the pump which is filled with a lubricating oil and thereby contaminating the oil to cause damage to other parts of the pump.
  • a slot 43 is formed along the diameter of the rod adapter 38 and coacts with an adjusting pin 44 that may be adjustably arranged in holes 45, 46 or 47 of the thrust rod 41.
  • the return stroke of the plunger 16 is effected by the return stroke of the thrust rod 41 and engagement of the pin 44 against the end of the slot 43. Depending upon the position of the pin 44, the return stroke of the plunger 16 may be varied, and there may be a lost connection between the thrust rod 41 and the rod adapter 38.
  • the thrust rod 41 is slidably mounted within the body and particularly in bores provided in a housing divider 48 and a 'boss 49.
  • the left end of the thrust rod 41 has mounted thereon a diaphragm plate 50 and a diaphragm 51 arranged in a bell-shaped chamber defined by a bellshaped portion 52 of the body 10 and a cover member 53.
  • the diaphragm peripheral edge is secured between the portion 52 and the cover 53 which are secured together by suitable fasteners 54.
  • a pressure chamber 55 is defined having an inlet 56 interconnected to a line 57.
  • Powering of the diaphragm 51 and thrust rod 41 toward the right to effect the pumping stroke of the plunger 16 is accomplished by connecting the pressure chamber 55 to a source of pressurized fluid, while the return stroke of the diaphragm and thrust rod is accomplished by a spring 58 bottomed at one end on the diaphragm plate and at the other end on a housing surface 59.
  • the control valve 13 includes a valve body 60 mounted on the pump casing 10 and extending through an opening 61 in a side Wall of the casing as seen most clearly in FIG. 3.
  • a valve disc 62 is rotatably mounted within a recessed portion of the body and open at one side to a pressurized fluid inlet 63 provided in a fitting 64.
  • a suitable source of pressurized fluid be it natural gas or compressed air, is supplied to the fitting 64.
  • the valve disc 62 is resiliently held in position as shown in FIG. 3 by a spring 65.
  • the control valve 13 is in effect a three-way rotary valve for charging and exhausting the pressure chamber of the diaphragm motor 12.
  • the valve includes an exhaust port 66 and a pressure port 67 for connecting the pressure chamber 55 to a source of fluid pressure or exhaust to thereby operate the diaphragm motor 12.
  • These ports are arranged in the valve disc 62 and adapted to be in communication therewith for the respective charging or exhausting of the diaphragm motor.
  • the valve disc 62 is rotated so that an aperture 67a is in line with a passageway 68 that leads to a fitting 69 and the line 57, and ultimately the pressure chamber 55.
  • an aperture 67b communicates with the pressure inlet 63.
  • an aperture 66a is aligned with the passage 68 so that the exhaust port 66 connects the pressure chamber to an exhaust valve 70.
  • the exhaust valve 70 may be adjusted to vary the exhausting of the pressure chamber to thereby control the speed of the pump.
  • Rotation of the valve disc 62 is accomplished by swinging of a flipper arm '71 that is rotatably mounted on the valve body and interconnected with the valve disc by means of a drive shaft 72.
  • the flipper arm 71 has extending normally from its free end a pin 73 having pivotally mounted thereon one end of a flipper spring 74.
  • the other end of the spring 74 is pivotally mounted on a pin 75 carried by a stirrup 76 secured on the thrust rod 41.
  • the pins 73 and 75 extend so that they may engage a bumper plate 77 that is pivotally mounted on a shaft 78 carried on the back wall of the body 1%.
  • the bumper plate 77 is inverted, U-shaped and provided with upper abutting edges 77a and 77b for engagement by the pin 75 and lower abutting edges 77c and 77d for engagement by the pin 73.
  • the flipper spring 74 together with the flipper arm '71 defines a snap-over center device.
  • the parts shown in FIG. 2 illustrate their position at the conclusion of the pumping stroke and with the flipper arm having been swung to the position shown in FIG. 2 so that the valve disc 62 attains the position shown in FIG. 4, whereby the pressure chamber 55 is connected through the valve disc exhaust port 66 to the exhaust valve for exhausting the pressurized fluid at a rate determined by the adjustment of the exhaust valve.
  • the spring 58 will act against the diaphragm 51 and return the pump plunger 16 on its non-pumping stroke to the left position. As it moves to its left position as seen in FIG.
  • the pin carried by the stirrup V 76 engages the edge 77a of the bumper plate 77.
  • the pin 75 With the pin 75 in this position, it has caused the center line of the flipper spring 74- to become coincident with the center line of the flipper arm 71.
  • the bumper plate 77 Upon further movement of the pin 75, it will swing the bumper plate 77 about its shaft toward the left as seen in FIG. 2 whereby the edge 77d strikes the pin 73 to give an initial momentum to the bottom end of the spring 74 to swing it to the left position.
  • the bumper plate 77 thereby acts to provide useful work to the snap-over center device at the point Where it becomes unbalanced and further overcomes the initial frictional drag of the valve disc 62 caused primarily by pressure diflerential across the disc.
  • the torque available increases due to the greater moment arm upon which the spring 74 is acting. Further, as the center line of the flipper spring 74 progresses pass the center line of the flipper arm 71, a torque is created by the tension of the spring 74 causing the flipper arm to rapidly rotate or snap past the center with the assist of the striking action of the pumper plate.
  • an actuator for said piston comprising, a casing, a thrust rod reciprocally mounted in said casing, means for connecting said thrust rod to said piston, a diaphragm motor having a housing with a diaphragm therein, said thrust rod extending into said housing, means connecting said thrust rod to said diaphragm, a spring return for driving said diaphragm in one direction, and means responsive to the thrust rod for alternately charging with and exhausting from the diaphragm housing a pressurized fluid, said means including a rotary three-way valve having an actuator interconnected with atmosphere, the diaphragm housing, and a supply of pressurized fluid, a snap-over center device including a spring interconnecting the thrust rod and actuator for operating said valve between charge and exhaust positions, and means for giving initial movement to said snap-over center device, said means including a bumper plate actuated by said thrust rod.
  • an actuator for said piston comprising, a casing, a thrust rod reciprocally mounted in said casing, means for connecting said thrust rod to said piston, a diphragm motor having a housing with a diaphragm therein, said thrust rod extending into said housing, means connecting said thrust rod to said diaphragm, a spring return for driving said diaphrgam in one direction, and means responsive to the thrust rod for alternately charging with and exhausting from the diaphragm housing a pressurized fluid, said means including a rotary three-way valve interconnected with atmosphere, the diaphragm housing, and a supply of pressurized fluid, a flipper arm for operating said valve between charge and exhaust positions, and a flipper spring connected at one end to said thrust rod and at the other end to said flipper arm arranged to drive said flipper arm between said charge and exhaust positions upon reciprocation of said thrust rod, and means for giving initial movement to said flipper arm as
  • an actuator for said piston comprising, a casing, a thrust rod reciprocally mounted in said casing, means for connecting said thrust rod to said piston, a diaphragm motor having a housing with a diaphragm therein, said thrust rod extending into said housing, means connecting said thrust rod to said diaphragm, a spring return for driving said diaphragm in one direction, and means responsive to the thrust rod for alternately charging with an exhausting from the diaphragm housing a pressurized fluid, said means including a rotary three-way valve interconnected with atmosphere, the diaphragm housing, and a supply of pressurized fluid, a flipper arm for operating said valve between charge and exhaust positions, a flipper spring connected at one end to said thrust rod and at the other end to said flipper arm arranged to drive said flipper arm between said charge and exhaust positions upon reciprocation of said thrust rod, and a bumper plate pivotally mounted on said casing and
  • an actuator for said piston comprising, a casing, a thrust rod reciprocally mounted in said casing, means for connecting said thrust rod to said piston, a diaphragm motor having a housing with a diaphragm therein, said thrust rod extending into said housing, means connecting said thrust rod to said diaphragm, a spring return for driving said diaphragm in one direction, and means responsive to the thrust rod for alternately charging with and exhausting from the diaphragm housing a pressurized fluid, said means including a rotary three-way valve interconnected with atmosphere, the diaphragm housing, and a supply of pressurized fluid, a flipper arm for operating said valve between charge and exhaust positions, a flipper spring connected at one end to said thrust rod and at the other end to said flipper arm arranged to drive said flipper arm between said charge and exhaust positions upon reciprocation of said thrust rod, a bumper plate pivotally mounted on said casing, and
  • an actuator for said piston comprising, a casing, a thrust rod reciprocally mounted in said casing, means for connecting said thrust rod to said piston, a diaphragm motor having a housing with a diaphragm therein, said thrust rod extending into said housing, means connecting said thrust rod to said diaphragm, a spring return for driving said diaphragm in one direction, and means responsive to the thrust rod for alternately charging with and exhausting from the diaphragm housing a pressurized fluid, said means including a rotary three-way valve interconnected with atmosphere, the diaphragm housing, and a supply of pressurized fluid, a flipper arm for operating said valve between charge and exhaust positions, a flipper spring connected at one end to said thrust rod and at the other end to said flipper arm arranged to drive said flipper arm between said charge and exhaust positions upon reciprocation of said thrust rod, a bumper plate pivotally mounted on said casing, means
  • a ball check valve including a ball and a seat
  • the improvement in the seat which comprises an annular metal portion having first and second stepped bores defining a shoulder therebetween, the first bore being larger than said second bore, a chamfered portion at the end of the second bore adjacent the shoulder defining a ball seating portion, and a resilient annulus secured in said first bore against said shoulder for engaging the ball and being compressed thereby prior to seating the ball on said ball seating area to further define a seal and prevent leakage through the valve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Check Valves (AREA)
US510765A 1965-12-01 1965-12-01 Pumps Expired - Lifetime US3327635A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US510765A US3327635A (en) 1965-12-01 1965-12-01 Pumps
GB37679/66A GB1119278A (en) 1965-12-01 1966-08-23 Improvements in reciprocating pumps
NL6615569.A NL155635B (nl) 1965-12-01 1966-11-04 Pomp, aangedreven door een membraanmotor, met een door de beweging van de pompzuiger bestuurde fluidumtoe- en afvoer voor die motor.
DE1476673A DE1476673C3 (de) 1965-12-01 1966-11-29 Steuereinrichtung für einen druckmittelbetriebenen Motor
DE19661725007 DE1725007A1 (de) 1965-12-01 1966-11-29 Kugelrueckschlagventilsitz

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US510765A US3327635A (en) 1965-12-01 1965-12-01 Pumps

Publications (1)

Publication Number Publication Date
US3327635A true US3327635A (en) 1967-06-27

Family

ID=24032100

Family Applications (1)

Application Number Title Priority Date Filing Date
US510765A Expired - Lifetime US3327635A (en) 1965-12-01 1965-12-01 Pumps

Country Status (4)

Country Link
US (1) US3327635A (xx)
DE (2) DE1725007A1 (xx)
GB (1) GB1119278A (xx)
NL (1) NL155635B (xx)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3703077A (en) * 1970-11-23 1972-11-21 Bendix Corp Vacuum pumping device
US3906986A (en) * 1974-02-04 1975-09-23 Vending Components Inc Check valve for beer distributing system
USD244681S (en) * 1975-08-14 1977-06-14 Vapor Corporation Fluid pump or similar article
FR2499164A1 (fr) * 1981-02-04 1982-08-06 Provence Amenag Region Pro Can Dispositifs pour comprimer de l'air en utilisant la pression de l'eau et applications
US4594971A (en) * 1984-10-26 1986-06-17 Outboard Marine Corporation Variable fuel/oil ratio pump for two-stroke internal combustion engine
US4781213A (en) * 1987-11-16 1988-11-01 Kilayko Enrique L Ball check valve
US5348454A (en) * 1993-05-26 1994-09-20 Graco Inc. Liquid pump resilient inlet insert for pumping high solids content liquids
EP1235625A2 (en) * 1999-11-30 2002-09-04 Mykrolis Corporation Apparatus and methods for pumping high viscosity fluids
US20050184087A1 (en) * 1998-11-23 2005-08-25 Zagars Raymond A. Pump controller for precision pumping apparatus
US20070104586A1 (en) * 1998-11-23 2007-05-10 James Cedrone System and method for correcting for pressure variations using a motor
US20070128048A1 (en) * 2005-12-02 2007-06-07 George Gonnella System and method for position control of a mechanical piston in a pump
US20070125796A1 (en) * 2005-12-05 2007-06-07 James Cedrone Error volume system and method for a pump
US20070128047A1 (en) * 2005-12-02 2007-06-07 George Gonnella System and method for monitoring operation of a pump
US20070125797A1 (en) * 2005-12-02 2007-06-07 James Cedrone System and method for pressure compensation in a pump
US20070128061A1 (en) * 2005-12-02 2007-06-07 Iraj Gashgaee Fixed volume valve system
US20070126233A1 (en) * 2005-12-02 2007-06-07 Iraj Gashgaee O-ring-less low profile fittings and fitting assemblies
US20070128050A1 (en) * 2005-11-21 2007-06-07 James Cedrone System and method for a pump with reduced form factor
US20070128046A1 (en) * 2005-12-02 2007-06-07 George Gonnella System and method for control of fluid pressure
US20070127511A1 (en) * 2005-12-02 2007-06-07 James Cedrone I/O systems, methods and devices for interfacing a pump controller
US20070217442A1 (en) * 2006-03-01 2007-09-20 Mcloughlin Robert F System and method for multiplexing setpoints
US20080131290A1 (en) * 2006-11-30 2008-06-05 Entegris, Inc. System and method for operation of a pump
US7494265B2 (en) 2006-03-01 2009-02-24 Entegris, Inc. System and method for controlled mixing of fluids via temperature
US20090132094A1 (en) * 2004-11-23 2009-05-21 Entegris, Inc. System and Method for a Variable Home Position Dispense System
US20100262304A1 (en) * 2005-12-02 2010-10-14 George Gonnella System and method for valve sequencing in a pump
US8753097B2 (en) 2005-11-21 2014-06-17 Entegris, Inc. Method and system for high viscosity pump
US10815989B2 (en) 2019-01-30 2020-10-27 Utex Industries, Inc. Quick pull valve and seat assembly
US10907622B2 (en) 2018-05-02 2021-02-02 Sherman Production Solutions, Llc Reciprocating injection pump and method of use
US11519397B2 (en) 2018-05-02 2022-12-06 Sherman Production Solutions, Llc Reciprocating injection pump and method of use
US11751885B2 (en) 2019-11-13 2023-09-12 Heraeus Medical Gmbh Pressurized gas engine and method of operating a pressurized gas engine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL184436C (nl) * 1973-12-03 1989-07-17 Cloup Philippe Injecteur voor aan een fluidum toe te voegen produkt.
DE2816617C2 (de) * 1978-04-17 1985-12-05 Erich 7990 Friedrichshafen Roser Druckluftmotor mit Kolbenschieberventil
DE3038877A1 (de) * 1980-10-15 1982-06-03 Erich 7777 Salem Roser Drehscheibenventil, insbesondere zur umsteuerung von hubkolben-druckluftmotoren
GB2158199A (en) * 1984-05-02 1985-11-06 Ferranti Meters Limited Denis Valve and coupling assemblies

Citations (5)

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FR2499164A1 (fr) * 1981-02-04 1982-08-06 Provence Amenag Region Pro Can Dispositifs pour comprimer de l'air en utilisant la pression de l'eau et applications
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US4781213A (en) * 1987-11-16 1988-11-01 Kilayko Enrique L Ball check valve
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Also Published As

Publication number Publication date
DE1476673A1 (de) 1970-04-23
GB1119278A (en) 1968-07-10
DE1725007A1 (de) 1975-03-20
DE1476673C3 (de) 1975-07-17
NL6615569A (xx) 1967-06-02
DE1476673B2 (de) 1974-11-28
NL155635B (nl) 1978-01-16

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