Distributor Abutted By Or Frictionally Engaged With Pumping Member Patents (Class 417/520)
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Patent number: 12110896Abstract: An axial flow vacuum pump for evacuating a chamber in a semiconductor manufacturing process comprises a rotor having a plurality of rotor blades and a stator having a plurality of stator blades, wherein the rotor blades and stator blades have a curved shape.Type: GrantFiled: February 10, 2021Date of Patent: October 8, 2024Assignee: Edwards LimitedInventors: Nigel Paul Schofield, Stephen Dowdeswell
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Patent number: 11660625Abstract: A universal closure for a dispenser is contemplated. The closure seals to the container neck along three separate surfaces with sufficient force to enable the use of lockdown and/or anti-rotational features to secure the dispenser for e-commerce shipments. Provision of frictional projections secures a sufficiently tight fit between the container neck and the body insert of the closure so as to eliminate the need to force separate engagement features on the container itself.Type: GrantFiled: March 26, 2020Date of Patent: May 30, 2023Inventor: Simon Christopher Knight
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Patent number: 11534784Abstract: A dispenser pump is constituted by a closure body (2), a diaphragm body (3) which forms a pump chamber with the closure body and optionally a top actuator (4) for pressing the diaphragm body (4). The diaphragm body has a deformable wall (35) formed integrally in the same polymer as its annular mounting portion (31). An inlet valve (5) through the floor (21) of the closure body has a flap (52) which is formed and hinged integrally with that floor (21). An outlet valve may also be formed in the same polymer, either integrally with the diaphragm body or as a separate component. The deformable wall of the diaphragm body is shaped to generate a restoring force itself without a separate spring, so that the entire pump may be made from the same polymer e.g. polypropylene and without metal components.Type: GrantFiled: May 24, 2021Date of Patent: December 27, 2022Inventor: Simon Christopher Knight
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Patent number: 10330049Abstract: There is disclosed a modular, linearly actuated high-pressure pump for use in various applications with high-pressure fuel systems, in particular liquid cryogenic fuels such as Natural Gas, Hydrogen, Nitrogen and Argon (LNG/LH2/LN2/LAR). The pump utilizes linear actuation which smooths out the power profile. There are no dynamic seals which prevents failure from leakage. The primary benefit of a smooth, no pulse output and lack of dynamic seals is a longer life of the pump. Marine fuel systems that utilize cryogenic LNG are a primary application.Type: GrantFiled: August 29, 2017Date of Patent: June 25, 2019Assignee: ACD, LLCInventor: Michael Wells
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Patent number: 8197237Abstract: A drive device, comprising a housing, a rod, a limiting device, a sliding block, a rotating block, a pair of springs, a pair of first grooves, and a second groove. The rod passes through the sliding block, an axis is disposed on the sliding block, the rotating block is disposed on the axis, the springs are disposed on both sides of the rotating block, the top of the spring is contacted with one side of the rotating block, the first grooves are disposed on one side of the rod opposite to the housing, the second groove is disposed on inner side of the housing opposite to the first groove, a middle part of the second groove is lower than other parts thereof, one end of the rotating block slides in the second groove, and the other end of the rotating block slides in and between the first grooves.Type: GrantFiled: August 11, 2010Date of Patent: June 12, 2012Inventors: Bo Lin, Jiang Lin
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Publication number: 20100052415Abstract: A hydraulic pump comprising a containment body (2) having inside a cylindrical cavity (3) provided with a conduit (4) communicating with a hydraulic actuator and capable of holding a fluid. A piston (5) is movable in the cylindrical cavity (3) and a reservoir (12) of the fluid is in fluid communication with the cylindrical cavity (3). Actuation means (6) connected to the piston (5) move the piston (5) within the cylindrical cavity (3) to operate the hydraulic actuator. The pump also comprises means (13) for closing or opening the connection between the reservoir (12) and the cylindrical cavity (3). The reservoir (12) is substantially lined up with the cylindrical cavity (3) along an axis of longitudinal development (X) of same cylindrical cavity (3), so as to reduce the overall dimensions and the weight of the pump.Type: ApplicationFiled: January 24, 2008Publication date: March 4, 2010Inventors: Giancarlo Vezzoli, Gabriele Di Pietro, Samuele Laghi, Marco Fiesoli
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Publication number: 20100008801Abstract: A compressor including a cylinder, the cylinder delimiting a compressor chamber having a circular cross-section and the cylinder having a longitudinal axis and including a front wall, the front wall of the cylinder having inlet and outlet openings for passage therethrough of a medium to be compressed; and a reciprocating piston disposed in the compressor chamber, the reciprocating piston being reciprocable within the compressor chamber in a movement that includes a dead center position and having a pair of opposed ends with one end being more proximate to the front wall of the cylinder than the other opposed end and the reciprocating piston having an expulsion projection on its one end, the expulsion projection entering the outlet opening in a dead center position of the reciprocating piston, the longitudinal axis of the cylinder extending through the outlet opening.Type: ApplicationFiled: August 7, 2007Publication date: January 14, 2010Applicant: BSH Bosch und Siemens Hausgerate GmhHInventors: Marco Giacchi, Thorsten Kusnik, Jan-Grigor Schubert
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Patent number: 7559753Abstract: A double disc pump includes a stationary main pump housing block that can remain fixed to its supporting frame while all other parts of the pump are removed for servicing. This permits disassembly of the pump without disconnecting the inlet or outlet plumbing and is provided by a pump housing which is vertically divided along parallel horizontal planes into housing segments. An intermediate housing segment is hingedly mounted to the main block segment. A bottom housing segment is hingedly mounted to the intermediate housing segment. These three segments capture all of the internal parts of the pump including the suction and discharge discs and the trunnion seals. The hinged design of the segments allows them to conveniently swing away from other parts of the housing so that access to the internal structures can be accomplished without completely removing each segment.Type: GrantFiled: September 27, 2004Date of Patent: July 14, 2009Assignee: Penn Valley Pump Company, Inc.Inventor: Leslie J. Burrage
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Publication number: 20090175746Abstract: A compressor having a casing to which a gas suction pipe is connected; a driving motor provided in the casing; a cylinder; a valve supporting plate (210) covering the cylinder (300), the valve supporting plate (210) having a suction hole (212) for sucking gas into the cylinder (300) and two discharge holes (211) for discharging gas compressed in the cylinder (300); a piston (100) having two protrusions (101) at a pressure surface in correspondence to the two discharge holes (211) of the valve supporting plate (210), the protrusions (101) having different sized cross-sections, the piston being linearly reciprocal in the cylinder (300) by receiving a driving force of the driving motor; a suction valve coupled to the valve supporting plate (210) to open and close the suction hole (212); a discharge valve coupled to the valve supporting plate to open and close the two discharge holes (211).Type: ApplicationFiled: December 29, 2006Publication date: July 9, 2009Inventors: Kyoung-Jun Park, Ji-Young Bae, Jin-Kook Kim, Bum-Joon Kim, Hyuk Nam, Jong-Mok Lee, Jong-Hyuk Kim, Kyeong-Ho Kim
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Publication number: 20090053087Abstract: An improved plunger has a north end, a south end, and a center region therebetween. A first northward angled shoulder is provided proximate the north end, for catching solids and preventing them from damaging an exterior of the plunger below the shoulder and potentially other pump components. In one embodiment, first and second northward angled shoulders are provided proximate the north end. First and second southward angled shoulders may be provided proximate the south end, making the plunger invertible when the north end becomes worn. The plunger may be comprises of separable regions, having different hardnesses. In one embodiment, the shoulders may provide a tapered outside diameter for the plunger.Type: ApplicationFiled: August 21, 2007Publication date: February 26, 2009Inventor: Michael Brent Ford
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Patent number: 6755630Abstract: An apparatus for compressing fluid comprises a cylinder bore longitudinally penetrating a cylinder block a suction port penetrating to the cylinder bore, and a pair of slot-shaped fluid discharge having one opening at an end portion of the cylinder bore; a piston; a discharge valve assembly movably disposed at the cylinder bore to selectively open and close the fluid discharge ports of the cylinder block, the discharge valve assembly including a valve piston having a flange for limiting movement of the discharge valve assembly; a cylinder head defining a discharge chamber communicating with the fluid discharge ports, the cylinder head having a fluid discharge passage from the discharge chamber. The fluid suction port is selectively opened by the piston reciprocally moving in the cylinder bore to draw in fluid, which is discharged through the fluid discharge ports opened by the movement of the valve piston as the pressure of the fluid in the cylinder bore increases beyond a predetermined threshold.Type: GrantFiled: May 7, 2002Date of Patent: June 29, 2004Assignee: Samsung Gwangju Electronics Co., Ltd.Inventors: Gui-gwon Kim, Sung-tae Lee, Kyung-tae Jang
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Patent number: 6746217Abstract: A reciprocating compressor includes a closed container having a suction tube and a discharge tube, and a reference frame elastically supported and mounted in the closed container. A driving motor is mounted at one end of the reference frame for generating a linear reciprocating driving force. A front frame is coupled to the other end of the reference frame which has a cylinder insertion hole therein. A cylinder is inserted into the cylinder insertion hole, and a piston is inserted in the cylinder. A connection magnet holder penetrates the reference frame, and an engaging portion engages the connection magnet holder and the piston. A discharge valve assembly is coupled to cover a compression space formed inside the cylinder and discharging gas, and a spring surrounds and is spaced from the piston for elastically supporting a motion of the piston. The operation mechanism is stable without any driving imbalance.Type: GrantFiled: January 10, 2002Date of Patent: June 8, 2004Assignee: LG Electronics Inc.Inventors: Dong Han Kim, Byung Jik Kim, Hyeong Seok Kim, Jin Sung Park
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Patent number: 6702557Abstract: A fluid compressing apparatus including a cylinder block having a cylinder bore with a diameter penetrating through the cylinder block in a lengthwise direction, a discharge chamber having a diameter larger than the diameter of the cylinder bore, and at least one fluid suction port penetrating into the cylinder block including an interconnected space comprising a fluid discharge port. A piston serves to open and close the suction port while linearly reciprocating within the cylinder bore eliminating need for a separate suction valve assembly. A valve plate separates from and opens the discharge port as a result of the high pressure of the fluid in the cylinder bore, thus compressing the fluid until completely discharged; such that the clearance volume in the cylinder bore is minimized improving compression efficiency.Type: GrantFiled: May 7, 2002Date of Patent: March 9, 2004Assignee: Samsung Gwangju Electronics Co., Ltd.Inventors: Gui-gwon Kim, Sung-tae Lee, Kyung-tae Jang
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Patent number: 6695595Abstract: A pump includes a cylinder, a piston assembly, a first nozzle, a valve, a controller, a ring and a second nozzle. The cylinder defines first and second chambers and first and second channels for communication between the chambers. The piston assembly is received in the first chamber. The first nozzle defines a channel. The valve is received in the first chamber. The controller defines an axial channel and a radial channel communicated with the axial channel, and is received in the second chamber and linked to the valve through the second channel. The controller is movable between a first position for allowing the valve to seal the second channel and a second position for driving the valve to open the second channel. The ring is mounted on the controller so as to divide the second chamber into a first portion for communication between the first channel and the channel of the first nozzle and a second portion for communication between the second channel and the radial channel of the controller.Type: GrantFiled: August 16, 2002Date of Patent: February 24, 2004Inventor: Scott Wu
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Patent number: 6357233Abstract: A pneumatic operator for an air switch is provided. The operator is used to deliver at pulse of relatively high pressure air to an air switch, such as an air switch which would be commonly used in a spa bath or spa pool installation to operate a pump. The operator has a cylindrical plunger within which is provided a stationary body and an O-ring on an outer surface of the stationary body provides a seal between the stationary body and the plunger. Depression of the plunger expels the air from the apparatus to operate an air switch. When the plunger is returning to its original position, the seal can move to allow air from the surrounding environment to enter the space between the plunger and the stationary body.Type: GrantFiled: April 19, 2000Date of Patent: March 19, 2002Inventor: Kipley Roydon Marks
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Patent number: 6200107Abstract: A vacuum pumping system for use with a process chamber. The pumping system has a first vacuum pump whose inlet is adapted for communication via a first line with a chamber outlet and a second vacuum pump whose inlet is adapted for communication via a second line with a first pump outlet. A third line containing a throttle valve is linked to the first and to the second lines in parallel to the first vacuum pump to enable variable amounts of gas to flow through the throttle valve from the second line to the first line depending on the position of the throttle valve.Type: GrantFiled: August 12, 1998Date of Patent: March 13, 2001Assignee: The BOC Group plcInventor: Barrie Dudley Brewster
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Patent number: 5556263Abstract: A volumetric pump and fluid control valve system for controlling the flow of fluid which comprises a housing containing an interior cavity, an elongated valve shaft is disposed inside the cavity, and an elongate drive shaft of smaller diameter than the valve shaft connected to one end of the valve shaft. The drive shaft passes through a passage formed in the housing to extend from the cavity to the exterior. A resilient sheet of material having an aperture is disposed in the housing on the exterior side of the passage and the drive shaft passes through the aperture to form a sphincter seal. The drive shaft can be used to move the valve shaft back and forth in a reciprocating motion producing positive and negative pressures causing fluid to flow or merely to stabilize the valve shaft in position. The valve shaft includes two flanges which are spaced apart from one another. The flanges extend at least partially around the circumference of the valve shaft.Type: GrantFiled: June 6, 1995Date of Patent: September 17, 1996Assignee: Sarcos GroupInventors: Stephen C. Jacobsen, Clark C. Davis
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Patent number: 5407333Abstract: A rod-driven, downhole pump is disclosed, the pump including a traveling barrel contained within a pump housing, a central pump rod extending axially within the barrel, a valve ball located at the lower end of the pump rod, a valve seat near the barrel lower end, the pump rod including a rod shoulder for engaging the upper end of the barrel, the barrel containing annular passageways for the flow of fluid through the barrel, the pump rod reciprocable within the barrel, and the barrel reciprocable within the pump housing. The downward stroke of the pump rod causes the rod shoulder to engage the barrel upper end and concurrently displaces the valve ball below the valve seat, thereby allowing environmental fluid to flow through the barrel annular passageways. On the up stroke of the pump rod, the valve ball engages the valve seat and pushes the pump barrel upward within the pump housing. The sealing of the valve ball on the valve seat and the upward movement of the barrel displace columnar fluid upwardly.Type: GrantFiled: October 12, 1993Date of Patent: April 18, 1995Inventor: Charles T. Lambright
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Patent number: 5382142Abstract: A backwash valve for use in a sucker-rod actuated fluid pump, may be selectively actuated to permit both the standing and traveling ball valves to be unseated at the same time permit the pump to be backwashed and/or the production tubing string drained.Type: GrantFiled: April 6, 1993Date of Patent: January 17, 1995Assignee: Spears Speciality Oil Tools, Inc.Inventor: Harry L. Spears
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Patent number: 5326237Abstract: A pump for moving a fluid includes an outer chamber having a first end wall portion containing a fluid entrance port and a second end wall portion containing a fluid exit port, a valve tube slidably contained within the chamber and having a first edge with a cut out section, adjacent the chamber first end wall portion, a first cup member within the valve tube having an outwardly flared side wall with a lip resiliently bearing against the valve tube adjacent the first edge and having a bottom wall smaller than the chamber first end wall portion, spacer connecting and spacing apart the first cup member bottom wall and the chamber first end wall portion, a plunger having a tubular stem portion containing a check valve plug and extending through the chamber exit port, and having a second cup member contained within the valve tube and also having a bottom wall with a hole opening into the stem portion and an outwardly flared side wall bearing against the valve tube and oriented to oppose the first cup member, suchType: GrantFiled: March 8, 1993Date of Patent: July 5, 1994Assignee: Dupont Industries, Inc.Inventors: Howard E. Cecil, Thomas Dupont
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Patent number: 5147188Abstract: A reciprocating priming piston pump is provided with a piston check valve which provides improved performance by minimizing the pressure drop there through. A dog-bone shaped seat is slideably located inside a piston which in turn slides inside the cylinder of the pump. The piston is restrained at one end by seating upon the valve seat and its outer end by contact with the displacement rod. Rounded surfaces on the valve seat contribute to smooth flow and a slotted guide fingers in the upper end of the piston allow ample flow into the upper chamber from the lower chamber.Type: GrantFiled: April 11, 1990Date of Patent: September 15, 1992Assignee: Graco Inc.Inventor: Thomas J. Shaefer
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Patent number: 5139398Abstract: A neutralizer valve that is for use in conjunction with one or more reciprocating pumps of a tubing string that is operated in an oil well for recovery of crude oil. The neutralizer valve takes the place of a regular traveling valve in a rod pump, which includes a drag plunger for passing a crude and natural gas mix therethrough on a down stroke of the tubing string. The neutralizer valve includes a guide barrel that connects into the rod pump plunger and contains a ported seal stem that is arranged to move up and down therein. The ported seal stem includes a keyed rod as its upper end that is for fitting to travel up and down in a keyway that is formed through a ported disk which is arranged across the guide barrel interior. The ported seal stem includes a collar formed around its mid-section, the undersurface of which collar is a valve face that is for engaging, so as to seal against a seat that is maintained in the guide barrel.Type: GrantFiled: April 8, 1991Date of Patent: August 18, 1992Assignee: D & L Valve, Inc.Inventor: Donald R. Downing
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Patent number: 5108272Abstract: A subsurface well pump is provided which is resistant to vapor locking. The pump is a reciprocating sucker rod pump which has a top inlet valve, and a means to vent vapors from the barrel of the pump on each stroke.Type: GrantFiled: February 27, 1991Date of Patent: April 28, 1992Assignees: Shell Western E & P Inc., Shell Canada LimitedInventors: James R. Brewer, Wayne D. Lentz
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Patent number: 5067882Abstract: A dual-acting, reciprocating piston pump is provided which comprises a pump body formed with a passageway having an inlet and a discharge outlet which receives a piston assembly including a plunger rod carrying a valve plate or spider, a shovel rod carrying a shovel disc and a rod connector formed with a valve seat which interconnects the plunger rod and shovel rod. A tubular check valve is carried on the rod connector between the valve seat and the valve plate in sliding contact with the internal wall in the pump body formed by the passageway, which divides the passageway into an upper pumping chamber communicating with the discharge outlet and a lower pumping chamber communicating with the inlet. A second check valve is located at the inlet to the passageway in the pump body and is movable between an open and closed position relative thereto.Type: GrantFiled: June 20, 1990Date of Patent: November 26, 1991Assignee: Nordson CorporationInventors: James E. DeVries, Samuel R. Rosen, Robert D. Schneider
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Patent number: 4892468Abstract: A hydraulic pump is disclosed, characterized in that, in the hydraulic pump including a cylinder body having a cylinder chamber, a suction port and an ejection port, a cam member and a reciprocatingly movable member are provided, wherein oil in said cylinder chamber is ejected when said movable member is pushed into said cylinder chamber by the cam member, a cylindrical piston is slidably fitted into said cylinder chamber, so that the movable member is engaged with the cylindrical piston when it is pushed into the cylinder chamber so shut off communication between the cylinder chamber and the suction port and a valve provided in the ejection passage communicating to said ejection port is opened due to the pressure rise when said movable member is further pushed into said cylinder chamber to eject the oil in the cylinder chamber outwardly.Type: GrantFiled: August 8, 1988Date of Patent: January 9, 1990Assignees: Akebono Brake Industry Co., Ltd., Akebono Research, Development Centre Ltd.Inventor: Toshifumi Maehara
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Patent number: 4878819Abstract: A tie rod type cylinder valved at its lower plate and having a receiver on its upper plate. A rod-less trunk-like piston containing an inlet valve with a stem projecting out of the cylinder and connected with an actuator. The piston face having an opening acting as a valve seat. A capillary vent tube connecting the top of the cylinder with the mouth of the receiver. When the cylinder is filled to a stop, the actuator is activated, which closes the inlet valve and drives down the stem/valve/piston and it evacuates the cylinder. A flexible discharge line conveys the liquid into a nearby drain pipe or receptacle.Type: GrantFiled: April 14, 1988Date of Patent: November 7, 1989Inventor: Edward Bozoyan
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Patent number: 4840548Abstract: A high pressure plunger pump comprises a centrally arranged pressure valve, an oscillatingly movable plunger, a sleeve guided on the plunger and limiting a working chamber, a suction pump which surrounds the sleeve and accommodates an aspirated fluid, the sleeve having a ring chamber which opens towards the plunger, and a bush which is arranged in the ring chamber and supported against the plunger, the bush abutting against the plunger.Type: GrantFiled: March 24, 1988Date of Patent: June 20, 1989Inventor: Paul Hammelmann
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Patent number: 4790726Abstract: A reciprocatory piston and cylinder machine particularly suitable for use as a vacuum pump includes a cylinder (17), a cylindrical piston (16) relatively slidably reciprocable within the cylinder (17), and means for substantially sealing the annular space between the piston (16) and cylinder (17) in lieu of oil or other liquid lubricant. The sealing means comprises a sleeve (102) of a low-friction material disposed under circumferential tension, and preferably also under longitudinal tension, on the cylindrical surface of the piston (16). Also disclosed is a reciprocatory piston and cylinder machine of particular prior construction having a one-way valve (42) in an exhaust port (30) ahead of a head portion (24) of the piston (16). The arrangement is such that, as the front face of the piston head portion (24) approaches the closed cylinder end (52), the piston head portion 24 physically moves the one-way valve (42) so as to open the exhaust port (30).Type: GrantFiled: February 24, 1987Date of Patent: December 13, 1988Assignee: Commonwealth Scientific and Industrial Research OrganizationInventors: Guenter K. W. Balkau, Eckhard Bez, John L. Farrant
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Patent number: 4750871Abstract: A resonant reciprocating compressor wherein a reciprocating assembly comprising the movable armature of an electric reciprocating motor and a piston means coupled to the armature is driven cyclically when the electric motor is energized from an alternating current source to compress a working fluid, and including means operatively associated with the reciprocating assembly for producing a stabilizing force gradient in a direction to maintain or restore the reciprocating assembly to a centered operating position.Type: GrantFiled: March 10, 1987Date of Patent: June 14, 1988Assignee: Mechanical Technology IncorporatedInventor: Peter W. Curwen
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Patent number: 4747760Abstract: A pump for feed-pumps of fuel injection systems for internal combustion engines having a manually actuatable element, which operates counter to the force of a restoring spring to effect an inward stroke of a piston which includes a valve tappet thereon that pushes open a ball valve to the fuel feeding system of a feed pump. In operation, a medium is positively displaced from a work chamber into the feeding system. Upon an automatic return stroke of the piston, a medium is aspirated from the fuel feeding system of the feed pump into the work cylinder and at the end of the return stroke the ball valve closes automatically. In its position of repose, the pump does not require its piston to be locked in place, and pressure impacts of the feed pump are prevented from reaching the piston.Type: GrantFiled: August 5, 1986Date of Patent: May 31, 1988Assignee: Robert Bosch GmbHInventors: Leonhard Eberl, deceased, Karl Mielich, Miklos Mozes, Walter Schmid, Klaus Stieninger
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Patent number: 4708597Abstract: A fluid pump is disclosed having a plunger reciprocating within a working cylinder and a standing intake retention valve. The plunger comprises a stem having affixed to it a plug and a stop, a body being slidably engaged to the cylinder an located on the discharge side of the plug and on the intake side of the stop. Upon the upstroke of the plunger, a plug surface engages with a body seal and therefore pumps the fluid before it. Meanwhile, fluid flows in behind the plunger through the standing intake retention valve. Optionally, a standing discharge retention valve is employed to alleviate the vapor lock condition caused by the combination of counterpressure effect and gases in the fluid. On the downstroke, the plug disengages from the body, allowing fluid to flow noncompressibly past the plunger. Wiper means keep the cylinder surface clean of precipitated solids, so as to prevent abrasion to the sliding exterior surface of the body.Type: GrantFiled: May 23, 1986Date of Patent: November 24, 1987Assignee: Intevep, S.A.Inventor: Amnon V. Fekete
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Patent number: 4662831Abstract: Oil and other fluids are pumped from a well drilled into chalk or other difficult-to-produce formations by applying a back pressure to the formation concurrently with pumping fluid from the formation. One embodiment a pump suitable for performing the method includes a reciprocating piston with a check valve to permit the passage of fluid through the piston during downstrokes and to prevent its passage during upstrokes. The pump also includes a second check valve having a telescoping link that permits the downward passage of fluid for a first portion of the downstroke of the pump piston but prevents the passage of the fluid during a second portion of the piston downstroke. The combined action of the two valves is to lift fluid on the pump piston upstroke and force a portion of the previously lifted fluid back into the well, and thus into the formation, during the first portion of the downstroke.Type: GrantFiled: September 30, 1985Date of Patent: May 5, 1987Inventor: John D. Bennett
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Patent number: 4629402Abstract: An improved submersible pump valve assembly, actuated by the reciprocating movement of a sucker rod extended from surface equipment to a downhole traveling valve located in a tubing string, the valve assembly comprising a rotatable fluid port assembly supported in a barrel assembly which has a beveled seating surface with fluid ports therethrough. A reciprocatable actuator member having a screw rod portion coacts with a gear bore of the fluid port assembly to open the fluid ports thereof during the downstroke movement of the actuator member and to close the fluid ports during the upstroke movement. Also, the actuator member opens and closes the fluid ports of the barrel assembly alternately during its downstroke and upstroke positions, respectively. A middle rod connector, which connects the actuator to the sucker rod, has multiple fluid jetting ports which serve to agitate particulates in the reservoir liquids being pumped.Type: GrantFiled: November 19, 1984Date of Patent: December 16, 1986Assignee: Lift Technology, Inc.Inventor: Dennis L. Marshala
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Patent number: 4599054Abstract: A travelling valve assembly for use in a sucker rod actuated fluid pump includes a ball valve actuator which engages the ball valve during the downstroke of the sucker rod to force the ball valve into an open fluid transmitting relationship with respect to its valve seat.Type: GrantFiled: August 23, 1984Date of Patent: July 8, 1986Inventor: Harry L. Spears
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Patent number: 4591315Abstract: A positive displacement pump particularly useful in pumping viscous fluids which may or may not contain gases, including water vapor, and/or suspended solids in which the actual flow equals the theoretical maximum flow through a check valve associated with the pump, said pump including a piston having a plug valve incorporated therein which has limited reciprocable movement within an extension of the piston, and, also, within a cage which is reciprocable within said extension, the flow area within the piston downstream from the plug being at least equal to the flow area past the plug.Type: GrantFiled: September 29, 1982Date of Patent: May 27, 1986Inventor: Amnon M. Vadasz Fekete
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Patent number: 4591316Abstract: A positive displacement pump particularly useful in pumping viscous fluids which may or may not contain gases, including water vapor, and/or suspended solids in which the actual flow equals the theoretical maximum flow through a check valve associated with the pump, said pump including a piston having a plug valve incorporated therein which has limited reciprocable movement within an extension of the piston, the flow area within the piston downstream from the plug being proportioned, by restriction if necessary, to equal the flow area past the plug.Type: GrantFiled: September 29, 1982Date of Patent: May 27, 1986Inventor: Amnon M. Vadasz Fekete
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Patent number: 4470773Abstract: In a resilient chamber sampling apparatus incorporating a resilient body having a dished cavity area which is squeezed to pressure fluid trapped in the dished area, an improved form preferably incorporates an alternate anvil. It has a facing plate member at the end of the probe over a solid anvil. The cap or plate has a small hole in the center and telescopes with a small peripheral skirt aligning the cap with the resilient plug. On closure, high pressure is formed to force fluid from the cavity in the resilient body. When the probe is pulled away from the resilient body, the vacuum breaker slides in telescoping movement, and opens an external passage to fill the chamber where the fluid was pumped from, and the chamber is restored to its full size without pulling a vacuum, to avoid damage which might occur otherwise.Type: GrantFiled: September 20, 1982Date of Patent: September 11, 1984Assignee: Walker Engineering CompanyInventor: Robert H. Welker
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Patent number: 4060351Abstract: This invention relates to controlled inlet valves for metering pumps. The metering pumps for which the valve of the invention is applicable are of the kind comprising a cylinder in which moves a piston to which a reciprocating movement is imparted. In the valve of the invention a member is mounted to slide in the pump cylinder and one of the ends of this member has an obturator which co-operates with a sealing gland arranged at the inlet opening to the cylinder. The sliding member is selectively coupled at its other end to the piston and is subject to the urging of an elastic member which is capable of thrusting the obturator back to the closed position.Type: GrantFiled: March 1, 1976Date of Patent: November 29, 1977Inventor: Jean Cloup
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Patent number: 4014629Abstract: An improved pump for pumping both low viscosity and high viscosity fluids, which contains therein a body with three cavities, a hollow cylinder fitting in the first cavity and attached at its lower end, a hollow cylinder head containing therein a first valve means; having in the second cavity of said body of said pump a second valve means with a shaft positioned at the top end of said hollow cylinder such that said first valve means and said second valve means are positioned to ride freely on said shaft. Finally, a kick plate means positioned at the end of said shaft and located such that it can move freely within said third cavity means. When the pump is pumping high viscosity fluids it is the function of the kick plate means to push or force the high viscosity fluid up from said third cavity into the second cavity and then through the hollow cylinder head into the first cavity means and out through the outlet means in said pump.Type: GrantFiled: January 5, 1976Date of Patent: March 29, 1977Assignee: General Electric CompanyInventor: Robert M. Elsworth
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Patent number: 4009617Abstract: Sampling apparatus for periodically withdrawing small samples of liquid flowing through a pipe. The apparatus embodies an intake passage communicating with a T-section in the pipe. Liquid in the intake passage is pumped by a diaphragm which is pulsed pneumatically at periodic intervals. A check valve in the intake passage has one end projecting into the diaphragm chamber and is pushed positively by the diaphragm to intake port-closing position. A second passage communicating with the intake passage has a pop valve which opens under the diaphragm-created pressure after the check valve closes. Each periodic sample is collected from the latter passage in a plastic bag or other container. The apparatus can be washed and sanitized while on line by hose and coupling unit placed on the apparatus.Type: GrantFiled: March 18, 1976Date of Patent: March 1, 1977Inventor: Julius Theodore Johnson