Rectilinearly Reciprocating Cylinder And Piston-type Pump Patents (Class 417/399)
  • Patent number: 10221844
    Abstract: A fluid handling system for a particle processing instrument includes a pump, a pulse attenuator, a pressure transducer, and a pump controller. The pump may be configured to supply a pulsed flow of fluid having a first pulse characteristic to the pulse attenuator. The pulse attenuator may have a single, undivided, volume, fluid inlets, fluid outlets, and a pressure sensor port. The pulse attenuator may supply an outlet flow of fluid having a second pulse characteristic different from the first pulse characteristic. The pressure transducer may be in fluid communication with the pressure sensor port and in control communication with the pump controller. The pump controller may be in control communication with the pump to maintain a substantially constant nominal pressure within the pulse attenuator by controlling the pump motor.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: March 5, 2019
    Assignee: CYTONOME/ST, LLC
    Inventors: Christopher D. Lofstrom, Coby S. Hughey, Blair D. Morad
  • Patent number: 10197426
    Abstract: A metering device and metering method for metering carbon dioxide flow belong to the technical field of preparation of polyurethane foam materials. The metering device of the present invention has a simple structure and a small size, can accurately control the amount of the delivered liquefied carbon dioxide; meanwhile, one end of the metering pump is connected with the sliding block, and the sliding block can move on the transverse plate, thus changing the vertical movement stroke of the piston rod and changing the flow volume of the carbon dioxide. The cylinder of the metering pump of the present invention is internally provided with the water passages, and a coolant can be filled into the water passages to keep the temperature of the carbon dioxide constant.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: February 5, 2019
    Assignee: SHAOXING HUACHUANG POLYURETHANE CO. LTD.
    Inventors: Minghua Xiang, Jun Zhang, Weijiang Zhang
  • Patent number: 9861770
    Abstract: A vacuum motor comprising a working plunger, an internal space, in which the working plunger is arranged such that it is mobile in linear direction, a resetting element that exerts, at least for part of the time, a force on the working plunger that acts in the direction of a front side of the internal space, a gas inlet opening for supplying ambient air or a compressed gas into the internal space, and a gas outlet opening for discharging the gas from the internal space. The gas outlet opening is connectable to a negative pressure source, whereby a control plunger is arranged between the working plunger and a rear side of the internal space such as to be mobile in linear direction in the internal space.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: January 9, 2018
    Assignee: Heraeus Medical GmbH
    Inventor: Sebastian Vogt
  • Patent number: 9429001
    Abstract: A dual well pumping unit (12) has two hydraulic ram units (26), one for each well, which are connected together for regenerative assist. Synchronized variable stroke and variable speed pump down control is provided, such that should pump down be encountered in one of the wells, programmable controllers (46) reduce the speed and the stroke of a ram unit (26) for a pumped-down well by the same percentage, to maintain a constant cycle time between upstrokes and down strokes such that the ram unit (26) of the pumped down well will remain synchronized with a ram unit (26) of the other well. Preferably the speed and the stroke of the ram unit (26) of the pumped down well will be decreased by 1.5% per stroke when pump down is detected, and will be increased by 3% per stroke until a constant fluid level is reached.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: August 30, 2016
    Assignee: Flotek Hydralift, Inc.
    Inventor: Larry D Best
  • Patent number: 9162866
    Abstract: A dual pump fluid proportioner having an adjustable motor position comprises a mounting plate, first and second positive displacement pumps, first and second tie rods, a pump yoke and a motor. The first and second tie rods fixedly connect the first and second pumps to the mounting plate. The first and second pumps each have a pump shaft. The pump yoke slidably couples to the first and second tie rods and the pump shafts. The motor adjustably couples to the mounting plate and includes a drive shaft. The drive shaft extends from the motor, through the mounting plate to adjustably couple to the yoke.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: October 20, 2015
    Assignee: Graco Minnesota Inc.
    Inventors: Martin P. McCormick, Ryan F. Butler, Kenneth C. Floer
  • Patent number: 8714945
    Abstract: An air pump positioned within a hollow space in an aerodynamic structure for controlling the flow over an aerodynamic surface thereof, includes a movable member linearly displaced by a very low friction piston mechanism and a compression chamber open to the exterior of the aerodynamic surface through an orifice. Reciprocal displacement of the very low friction movable member changes the volume of the compression chamber to alternately expel fluid (e.g., air) from and pull fluid into the compression chamber through the orifice. The movable member includes a piston oscillating within a piston housing each having an ultra-low friction coating for improved thermal performance and reduced maintenance. Fluid intake to the compression chamber may be increased through the use of a one-way valve located either in the aerodynamic surface, or in the piston. Multiple flapper valves may surround the orifice in the aerodynamic surface for increased fluid control.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: May 6, 2014
    Assignee: The Boeing Company
    Inventor: Terrence S. Birchette
  • Patent number: 8602751
    Abstract: A transfer pump includes a motor that attaches to a manifold with a motor mount that seals a top end of the manifold. The motor mount includes a tubular portion that extends into and threadably engages the manifold, to cooperatively define a channel therethrough. The manifold includes a plurality of inlet ports arranged generally in an annular pattern. An inner cylinder attaches to the manifold from below, disposed radially inward from the inlet ports, and a pressure cylinder attaches to the manifold, disposed radially outward from the inlet ports. The pressure cylinder includes a foot valve. A pump shaft extends from the motor, through the channel, and into the pressure cylinder. A large piston with a check valve is attached to the distal end of the shaft, and a small piston disposed in the inner cylinder is attached at an intermediate location.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: December 10, 2013
    Assignee: International Pump Manufacturing Inc.
    Inventor: John P. Courier
  • Patent number: 8591201
    Abstract: A hydraulically driven diaphragm pumping machine comprises a plunger (6) that is slidably mounted in a middle part of the inside of the machine's hydraulic cylinder (5) between first and second bellow-like diaphragms (4,10). Ends of the plunger (6) are connected to the first and second bellows-like diaphragm (10) to define respective first and second outer annular spaces (a) that are independent of one another, and the pressure of fluid in the first annular space (a) is independent of the pressure of fluid in the second annular space (a). The machine may also comprise a hydromechanical switch for commutating a valve (102) to automatically control the supply of hydraulic fluid to the hydraulic cylinder at given moments of the machine's cycle.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: November 26, 2013
    Assignee: Garniman S.A.
    Inventor: Jan Eysymontt
  • Publication number: 20130152293
    Abstract: A fluid-operated actuator assembly has a valve with an inlet for connection to a pressurized fluid source, a bi-stable electromagnetic device for operating the valve, which has a first state closing the valve and a second state opening the valve, a hydraulic actuator, and an electronic control circuit. The hydraulic actuator has an actuating member in a housing, the housing having a chamber on one side of the actuating member to which an outlet of the valve is connected for receiving fluid from the fluid source when the valve is opened, the actuating member for operation of the hydraulic actuator. The control circuit momentarily energizes the bi-stable electromagnetic device to the hydraulic actuator from the second state, back to the first state, to terminate operation of the hydraulic actuator.
    Type: Application
    Filed: April 30, 2012
    Publication date: June 20, 2013
    Applicant: DEFOND COMPONENTS LIMITED
    Inventors: Kwok Chiu YU, Kai Chi CHAN, Alec Kam Lek QUAN
  • Publication number: 20130101440
    Abstract: A gas-driven air compressor system and a method for using it. No electricity, lubrication or cooling water is required. A high pressure gas used to drive the compressor may be recovered at a pressure high enough to be retain its economic value. In one preferred embodiment, the air compressor includes a gas-driven drive cylinder and an air-driven boost cylinder, interconnected by reciprocating drive and boost pistons. The drive piston supplies force to power the boost piston, which pulls in atmospheric air and discharges it at a higher pressure for use by pneumatically-operated controls and equipment. A four-way valve operating on differential gas pressure may be used to automatically actuate the reciprocating piston. Using the present invention, fugitive gas emissions, such as normally occur when using a separator to remove oil and water from a wellhead gas stream, may be avoided.
    Type: Application
    Filed: October 25, 2011
    Publication date: April 25, 2013
    Applicant: MIDWEST PRESSURE SYSTEMS, INC.
    Inventor: Robert Vogt
  • Patent number: 8313313
    Abstract: A pumping device (1) by which fluids held in a reservoir tank (9) can be pumped to a spray gun (11) in a metered manner, with a piston rod (5) mounted in a housing (2) in axially movable fashion, with a reciprocating piston (25) attached thereto, with a piston (7, 8) connected to the piston rod (5) and moved between a first and a second housing sections (3, 4), first and second pressure spaces (21,21?, 22, 22?) enclosed with the two housing sections (3,4), two pressure lines (17, 17?) in each of the housing sections (3, 4) such that emerge into one of the pressure spaces (21, 21? or 22,22?), a working medium (19) pressed through pressure lines (17, 17?) alternately into a pressure space, by means of which the piston (7, 8) is driven, with a diaphragm a central area (14) connected to the piston rod (5), and its outer area (15) connected to the housing (2), and a flexible ring area (16) between the central and outer areas (14, 15), and a pumping space (20) enclosed by the diaphragm (12, 13) and the housing (2),
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: November 20, 2012
    Assignee: J. Wagner AG
    Inventors: Karsten J├╝terbock, Daniele Foffano, Angelo Basso, Davide Galvani
  • Patent number: 8186972
    Abstract: A multi-stage expansible chamber pump system includes a HP pump unit, and first and second LP pump units. The LP units each include a LP air chamber and a pumped fluid chamber, separated by a piston. The HP unit includes left and right HP air chambers separated by a piston. Pistons are coaxial on a common piston rod for reciprocating movement in unison. A direction control DC valve includes a valve spool movable between first and second positions. The DC valve receives high pressure shop air as Control air and Process air. Control air moves the DC valve spool alternately to first and second positions. The DC valve, as determined by the position of the spool, directs Process air alternately to one side, then the other, of the HP unit, whereby the pistons reciprocate in unison to pump fluid through the fluid chambers.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: May 29, 2012
    Assignee: Wilden Pump and Engineering LLC
    Inventor: Carl J. Glauber
  • Publication number: 20120114510
    Abstract: A reciprocated pump positioned at the lower end of a string of tubing in a bore hole that provides a passageway for moving formation fluid to the earth's surface, including a pump barrel supported in communication with the tubing and a standing valve at the lower end thereof providing a first passageway through which formation fluid flows into the pump barrel, the pump barrel having an intermediate vent port providing a second entry passageway, and a tubular plunger reciprocated within the barrel and having an upper and a lower portion with a plurality of non-metallic seal rings separated by metallic spacers received on the plunger upper portion and configured to support a column of formation fluid within the tubing to substantially isolate the portion of the barrel below the non-metallic seal rings from the tubing pressure to thereby allow formation fluid to move into the pump barrel.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 10, 2012
    Inventor: T. Leon Brown
  • Publication number: 20120034113
    Abstract: Device for pumping fluid located under conditions of high ambient temperature and pressure which must deliver at high pressure including a hydraulic delivery pump (11) linked to a hydraulic motor (40), characterised in that the hydraulic motor (40) is connected to the hydraulic delivery pump (10) by a shaft (41), the shaft (41) passing through a leaktight rotating seal (50) which separates the hydraulic fluid (42) returned from the hydraulic motor (40) from the lubricating fluid (5) for the hydraulic pump (10).
    Type: Application
    Filed: September 14, 2010
    Publication date: February 9, 2012
    Applicant: HYDRO LEDUC
    Inventor: Louis-Claude POREL
  • Patent number: 8109738
    Abstract: A gas pressure booster and a method for using it, which recovers fugitive gas emissions such as at atmospheric pressure, boosts them such as to the pressure level of the low pressure gas sink, and returns them to, e.g., the low pressure gas sink, in a single stage of compression. No electricity or cooling water is required. All gas used to drive the vapor recovery booster may be recovered and vented to the low pressure gas sink. In one preferred embodiment, the gas pressure booster includes a drive cylinder and a boost cylinder interconnected by reciprocating drive and boost pistons. The drive piston supplies force powered by a first gas stream within the drive cylinder which exhausts to a second gas stream at a lower pressure. Fugitive gas emissions may be captured and transported to the lower pressure second gas stream to eliminate gas discharged to atmosphere.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: February 7, 2012
    Assignee: Midwest Pressure Systems, Inc.
    Inventor: Robert A. Vogt
  • Patent number: 8011901
    Abstract: A pump has a pump barrel formed from a larger diameter section and a smaller diameter section. Each section has a biased piston moveable within the section and the pistons are connected together to form a variable volume chamber between the pistons. As the connected pistons move toward the larger diameter section, a volume of fluid is moved through an inlet valve into the variable volume chamber of increasing volume. When the pistons are moved toward the smaller diameter section, a differential volume of fluid is discharged from the variable volume chamber of decreasing volume through a discharge valve into a discharge conduit. The pistons are actuated to move within the pump barrel by application and release of pressure at a remote end of the discharge conduit.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: September 6, 2011
    Assignee: Suncor Energy Inc.
    Inventor: Grant Duncan
  • Publication number: 20110176940
    Abstract: A hydraulic pressure intensifier system (10) for developing a high pressure fluid jet that utilizes an electric motor (84) for both pressurizing a hydraulic fluid and for controlling the pressure and/or flow of the high pressure fluid jet developed by the system. The intensifier system also utilizes a return spring for retraction of the piston which allows the hydraulic fluid and the high pressure fluid to be separated by an air gap to minimize the potential for cross-fluid contamination. A high pressure hose (66) connected to the output of the intensifier includes a check valve (70) at its distal end rather than at the outlet of the intensifier to allow fluid to be drained out of the hose and into the intensifier upon system shut down for instantaneous stoppage of the jet.
    Type: Application
    Filed: July 6, 2009
    Publication date: July 21, 2011
    Inventors: Shawn D. Ellis, Mario A. Calvo, Daniel V. Davis, Jason T. Dunn, Todd D. Lambert, Yeng A. Vue
  • Patent number: 7980516
    Abstract: An air pump positioned within a hollow space in an aerodynamic structure for controlling the flow over an aerodynamic surface thereof, includes a movable member linearly displaced by a very low friction piston mechanism and a compression chamber open to the exterior of the aerodynamic surface through an orifice. Reciprocal displacement of the very low friction movable member changes the volume of the compression chamber to alternately expel fluid (e.g., air) from and pull fluid into the compression chamber through the orifice. The movable member includes a piston oscillating within a piston housing each having an ultra-low friction coating for improved thermal performance and reduced maintenance. Fluid intake to the compression chamber may be increased through the use of a one-way valve located either in the aerodynamic surface, or in the piston. Multiple flapper valves may surround the orifice in the aerodynamic surface for increased fluid control.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: July 19, 2011
    Assignee: The Boeing Company
    Inventor: Terrence S. Birchette
  • Patent number: 7980834
    Abstract: A pump for boosting pressure of liquid color for injection into plastic resin in molding or extrusion apparatus includes a housing having a first bore extending in a first direction and second and third bores extending through the housing and communicating with the first bore proximate a first end of the first bore with the first end of the first bore being blind. The pump further includes an inlet check valve connectable to the second bore for permitting liquid flow through the second bore into the first bore. Further included is an outlet check valve connective to the third bore for permitting liquid flow out of the first bore through the third bore. A member is reciprocally axially movable within the first bore. A solenoid applies air pulses to the end of the first member facing oppositely from the blind end of the first bore.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: July 19, 2011
    Inventor: Stephen B. Maguire
  • Patent number: 7878081
    Abstract: A portable, refrigerant recovery unit for transferring refrigerant from a refrigeration system to a storage tank. The recovery unit includes two, opposed piston heads rigidly attached to respective piston rods that extend along a common fixed axis. The piston rods are rigidly attached to the yoke member of a scotch yoke arrangement. In operation, incoming refrigerant from the system is simultaneously and continuously directed to the opposing piston heads wherein the forces of the pressurized refrigerant on them counterbalance or neutralize one another. The scotch yoke arrangement includes a two-piece slide mechanism mounted about a cylindrical crank pin and a single piston embodiment is additionally disclosed.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: February 1, 2011
    Inventor: Gregory S Sundheim
  • Publication number: 20110008189
    Abstract: A pump includes a pump body defining a fluid chamber and inlet and outlet ports in fluid communication with the fluid chamber, an inlet check valve connected to the inlet port, an outlet check valve connected to the outlet port, and a piston housing coupled to the pump body and defining a piston chamber. A piston assembly is disposed at least partially within the piston chamber and at least partially within the fluid chamber and includes a piston and a poppet connected to the piston in proximity to the pump body. In addition, the pump includes a gland disposed between a portion of the piston housing and the pump body. Further, the pump includes the poppet having a poppet head axially connected to a diaphragm coupled to a poppet flange. The poppet head is connected to the piston.
    Type: Application
    Filed: July 12, 2010
    Publication date: January 13, 2011
    Applicant: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
    Inventor: Hy Nguyen
  • Publication number: 20100209265
    Abstract: Power and control logic configurations for gas well dewatering systems are provided. In one example, a reservoir is configured to contain hydraulic, lubricating fluid. An electric motor is configured to receive fluid from the reservoir for lubrication and a hydraulic pump powered by the electric motor is configured to receive fluid from the reservoir and pump the fluid into a hydraulic circuit. A positive displacement oscillating pump is powered by the hydraulic pump and configured to pump fluid from the reservoir to an outlet from the well. The electric motor and hydraulic pump receive the same fluid from the reservoir for lubrication and to create pressure in the hydraulic circuit, respectively.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 19, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Michael A. Dowling, Jason Kamphaus, Harryson Sukianto, Alain P. Dorel, John David Rowatt, Arthur I. Watson
  • Publication number: 20100180607
    Abstract: The cryogenic fluid generator includes at least one pump assembly having an actuator mounted to a container assembly. A pump assembly housing includes a longitudinal positioning opening and a pressurization cavity at a distal end terminating with a pump assembly outlet. An internal check valve assembly includes a shaft positioned within an opening of the pump assembly housing that extends into the pressurization cavity. The shaft is attached to the actuator and includes a longitudinal guidance slot; a fluid passageway; and, an internal sealing surface. A positioning bar assembly is positioned within the guidance slot. A connecting rod is securely connected at a first end to the positioning bar assembly, the connecting rod being positioned within the fluid passageway and terminating with a flow inhibiting element. A seal is positioned between the pump assembly housing and the check valve to provide a closure for the pressurization cavity.
    Type: Application
    Filed: January 20, 2010
    Publication date: July 22, 2010
    Applicant: ENDOCARE, INC.
    Inventors: THACH DUONG, JAY J. EUM
  • Publication number: 20100116508
    Abstract: A downhole pump assembly for removing volumes of liquids, crude oils, gases, and produced waters, from oil or gas wells is described based on a downhole controllable electric drive, and a positive displacement pump, wherein the electric drive powers a hydraulic pump that powers the positive displacement pump.
    Type: Application
    Filed: May 20, 2008
    Publication date: May 13, 2010
    Inventor: Kenneth Doyle Oglesby
  • Publication number: 20100021234
    Abstract: A propulsion system is for a road milling machine with a rotatable cutter drum (3). The system includes four crawler assemblies (12) movably coupled with the mainframe so as to define front and rear, and left and right, pairs of crawler assemblies. Four steering actuators (14) are each coupled with a separate crawler assembly and each angularly displaces the crawler about a vertical axis (12a). A first pump (16A) is fluidly coupled with the left pair of crawlers and a second pump (16B) is fluidly coupled with the right pair of crawlers. A control (20) is configured to selectively operate the four actuators in a plurality of different steering modes, one steering mode being a circle steer mode, and to operate the two pumps such that one of the left and right pairs of crawlers are drivable by the first pump in one direction while the other pair of crawlers are drivable in an opposing direction.
    Type: Application
    Filed: September 28, 2007
    Publication date: January 28, 2010
    Inventors: Paul E. Willis, Justin Zupanc
  • Publication number: 20100014997
    Abstract: The invention relates to split-chamber pressure exchangers. Split-chamber pressure exchangers are characterized in that the pressure exchange chambers and the pistons thereof are split in two. Each fluid passes through the corresponding chamber thereof, such that said fluids cannot be mixed. The cross sections of the chambers can be varied in order to vary the transmitted pressure. The reverse line operation can be established and synchronized using a U-shaped tube with telescopic sides and a fixed base filled with fluid or diametrically opposed curved lines, and multiple arrangements can be used. Split-chamber pressure exchangers can be used as surface or well pumping systems and the pumping fluid used can differ from the fluid to be pumped. Different levels of any material can be exploited at any storage site using a chamber with elastic walls filled with fluid and attached to the bottom. Electric power can be generated by centrifuging the pre-pumped fluid.
    Type: Application
    Filed: June 11, 2007
    Publication date: January 21, 2010
    Inventor: Fernando Ruiz del Olmo
  • Patent number: 7600984
    Abstract: The metering device for a liquid medium comprises a cylinder and a piston operatively disposed therein to define a metering chamber ahead of the piston. The outlet end of the cylinder is open and closed by an evacuation valve. The piston is driven forwardly through a working stroke to force the liquid medium in the metering chamber out of the chamber and past the evacuation valve. A check valve located in the metering chamber moves from a closed to an open position on each working stroke to preclude entrapment of air in the metering chamber and thus provide for more accurate metering. The metering device may include means to regulate the length of the working stroke.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: October 13, 2009
    Assignee: Oil-Rite Corporation
    Inventors: Donald G. Gruett, Michael J. Wech
  • Patent number: 7584784
    Abstract: A reciprocating drive apparatus for connection to a top end of a rod swing to drive a downhole pump located in a well includes a plate adapted to be fastened to a top end of a well head assembly of the well, and a mast attachable to the plate in a substantially vertical working position. A hydraulic cylinder is attached to the mast such that when the mast is in the working position the hydraulic cylinder is oriented substantially vertically, and such that the hydraulic cylinder can extend and retract in response to a controller. A tether is adapted to be fixed to the well head and to the top end of the rod string and is configured such that the hydraulic cylinder engages the tether to move the rod string up and down as the hydraulic cylinder extends and retracts.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: September 8, 2009
    Inventor: John Wagner
  • Publication number: 20090196771
    Abstract: In a pumping device (1) by means of which fluids (10) or pourable media held in a reservoir tank (9) can be pumped to a spray gun (11) in a metered manner, with a piston rod (5) mounted in a housing (2) in an axially movable fashion, with a reciprocating piston (25) attached to its free end, with a piston (7, 8) firmly connected to the piston rod (5) that can be moved between a first and a second housing section (3, 4), and by means of which a first and a second pressure space (21, 21?, 22, 22?) is each enclosed together with the two housing sections (3, 4), with two pressure lines (17, 17?) worked into one each of the two housing sections (3, 4) in such a way that they emerge into one of the two pressure spaces (21, 21? or 22, 22?), with a working medium (19) pressed through the pressure lines (17, 17?) alternately into the particular pressure space (21, 21?, 22, 22?), by means of which the piston (7, 8) can be driven, with a diaphragm (12, 13) with a central area (14) firmly connected to the piston rod (5)
    Type: Application
    Filed: January 13, 2009
    Publication date: August 6, 2009
    Inventors: Karsten Juterbock, Daniele Foffano, Angelo Basso, Davide Galvani
  • Patent number: 7559438
    Abstract: A plural component pumping apparatus including a piston and cylinder for each component to be pumped. Reciprocation of the piston in the cylinder draws the component into the cylinder during an intake stroke of the pumping apparatus and exhausts the material from the cylinder during an exhaust stroke of the pumping apparatus. Intake and exhaust valves are provided into the cylinder. Each of the intake and exhaust valve includes a housing oriented outside the cylinder to facilitate repair or replacement of the valves. A pumping motor on each side of the cylinder is coupled to a support and to the piston to move the support and piston relatively toward each other during the exhaust stroke and relatively away from each other during the intake stroke. A position indicator is coupled to the pumping motor. The pumping motor controls sense the position of the position indicator.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: July 14, 2009
    Assignee: Illinois Tool Works Inc.
    Inventors: Michael J. Kosmyna, Ralph Wisniewski
  • Publication number: 20090110563
    Abstract: A power recovery system is used for reducing the total energy consumption in a process such as an industrial treating process or a fluid refining process including the delivery of a fluid under a high pressure. The power recovery system includes a high-pressure pump for pressuring raw water, a reverse osmosis membrane cartridge for treating high-pressure water discharged from the high-pressure pump with a reverse osmosis membrane to produce treated water, a positive-displacement piston pump for pressuring raw water under the pressure of concentrated water which is discharged from the reverse osmosis membrane cartridge without being treated by the reverse osmosis membrane, and a power recovery pump turbine for boosting the pressurized raw water discharged from the positive-displacement piston pump and adding the boosted water to the high-pressure water discharged from the high-pressure pump. The power recovery pump turbine is actuated by pressurized water generated in the power recovery system.
    Type: Application
    Filed: October 22, 2008
    Publication date: April 30, 2009
    Applicant: EBARA CORPORATION
    Inventors: Shigeo TAKITA, Masao Shinoda, Takashi Yamanaka, Akira Goto, Hideki Kanno
  • Publication number: 20090085312
    Abstract: A pressure keeping mechanism is provided downstream of a discharge port of a compressor. The pressure keeping mechanism is set to a small flow path area having only a bypass orifice until a pressure in a downstream pipe reaches a predetermined pressure after the operation is started, the pressure keeping mechanism is set to a large flow path area of a pressure keeping valve which is opened when the pressure exceeds the predetermined pressure and the bypass orifice, thereby changing the flow path area at least in two stages. The pressure in the upstream pipe which is almost closed by the pressure keeping valve can be thus increased at a dash and the pressure in a compression chamber can also be increased swiftly immediately after the compressor is started.
    Type: Application
    Filed: September 29, 2008
    Publication date: April 2, 2009
    Applicant: Hitachi, Ltd.
    Inventors: Shunsuke Mori, Kazutaka Suefuji
  • Publication number: 20080267795
    Abstract: A reciprocating drive mechanism having a housing with upper and lower internal chambers with a spool slidably positioned inside the upper internal chamber. There is at least one fluid inlet and fluid exhaust communicating with the upper internal chamber and at least one slide valve positioned within the upper internal chamber and traveling with the spool. A piston positioned in the lower internal chamber divides the lower internal chamber into an upper and lower cylinder space. There is at least one fluid conduit communicating between the upper internal chamber and the upper cylinder space and at least one fluid conduit communicating between the upper internal chamber and the lower cylinder space. A valve stem is connected to the piston and includes a bore communicating with the upper internal chamber and an exhaust passage is positioned between the upper and lower internal chambers.
    Type: Application
    Filed: April 17, 2008
    Publication date: October 30, 2008
    Inventors: Rusty Singer, Andrew C. Elliot
  • Patent number: 7431572
    Abstract: A hydraulic oil well pumping installation includes a down hole pump positioned down a well, the down hole pump including a master cylinder and at least one slave cylinder in axial alignment with the master cylinder. A master piston is positioned in the master cylinder and divides the master cylinder into a first portion and a second portion. A slave piston is positioned in the at least one slave cylinder and divides the slave cylinder into a first portion and a second portion. The slave piston is connected by a rigid linkage to the master piston, such that movement of the master piston results in movement of the slave piston.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: October 7, 2008
    Assignee: Global Energy Services Ltd.
    Inventor: Clayton Hoffarth
  • Publication number: 20080240944
    Abstract: An air-operated pump for pumping material such as oil or grease. The pump is powered by an air motor which operates to reciprocate a piston and plunger to effect a pumping action. The air motor is modular in that the air valve system is contained in a single housing fastened to the pump head. The housing is removable as a unit from the pump head to facilitate servicing of the air valve system.
    Type: Application
    Filed: March 28, 2007
    Publication date: October 2, 2008
    Applicant: LINCOLN INDUSTRIAL CORPORATION
    Inventor: Thomas M. Arens
  • Patent number: 7322802
    Abstract: A thick matter pump comprising a drive motor (50), a (reversible) hydraulic pump (6), and two hydraulic cylinders (5, 5?) coupled to conveyor cylinders (7, 7?) for conveying the thick matter. A regulator regulates the rotational speed N of the drive motor (50), and a regulating clement (18, 20) regulates the displacement volume V of the hydraulic pump (6). A control module (54) regulates the rotational speed N of the motor and the displacement volume V. For improved operational ease and reduction of fuel requirements, noise and waste gas emission, the control module (54) comprises a final control element (56) for regulating the conveyance capacity of the conveyor cylinders (7, 7?), and an electronic control unit (108) which reacts to the position of the final control element (56) and allocates a nominal value to the rotational speed regulator and to the displacement volume regulator (20), in a software-assisted manner.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: January 29, 2008
    Assignee: Putzmeister Aktiengesellschaft
    Inventors: Hartmut Benckert, Paul Von Baeumen, Wolf-Michael Petzold
  • Patent number: 7284961
    Abstract: A pumping system including a pump is disclosed. The pump includes a replacement piston and a replacement cylinder associated with the replacement piston. The replacement piston has a cross sectional area smaller than a cross sectional area of an original piston of the pump.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: October 23, 2007
    Assignee: BS&B Safety Systems, Ltd.
    Inventor: Jerry Jacobsen
  • Patent number: 7147442
    Abstract: An automatic oil pump includes a drive chamber, having a reciprocal driving device, and an oil chamber, having a sucking device, located on two sides of a main body. The reciprocal driving device has a piston unit having a valve chamber at its center and a balance valve and is pushed by a spring. The drive chamber has grooves on its inside wall. The piston unit has two channels, allowing air to flow into the valve chamber past two sides of the piston unit. On the piston unit is a driving rod. The driving rod penetrates into the main body and reaches into the oil chamber. A hermetic cover and a movable piston are attached to an end of the driving rod. On the wall of the piston are pluralities of through holes. The reciprocal driving device drives the piston in the oil chamber to move reciprocally, so oil is sucked into and out of the oil chamber continuously. Thereby, oil sucking speed and volume are upgraded to save time and labor, and oil pumping efficiency is enhanced.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: December 12, 2006
    Inventor: Kuo-Chung Yeh
  • Patent number: 6874997
    Abstract: There is provided a pump system excellent in a maintenance ability and compatibility. The pump system comprises a pump (1) for transferring a liquid by alternately supplying air to air chambers (17a, 17b) to extend and contract a pair of bellows (13a, 13b) linked to a shaft (15). It also comprises a switching valve mechanism (2) for switching the air supplied to the pump (1). Switching mechanisms (40a, 40b) are employed to switch the pilot air for controlling the switching operation of the switching valve mechanism (2). The switching mechanisms are detachably attached to cases (16a, 16b) of the pump (1) from outside.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: April 5, 2005
    Assignee: Iwaki Co., Ltd.
    Inventors: Tsuyoshi Watanabe, Masao Morishita, Tsutomu Sawada, Toshiki Oniduka
  • Publication number: 20040234390
    Abstract: An automatic oil pump that includes a drive chamber having a reciprocal driving device and an oil chamber having a sucking device, located on two sides of a main body. The reciprocal driving device has a piston unit having a valve chamber at its center and a balance valve, pushed by a spring. The drive chamber has grooves on its inside wall. The piston unit has two channels, allowing air to flow into the valve chamber, passing two sides of the piston unit. On the piston unit is a driving rod, the driving rod penetrates into the main body and reaches into the oil chamber. A hermetic cover and a movable piston are attached to an end of the driving rod. On the wall of the piston unit are pluralities of through holes. The reciprocal driving device drives the piston in the oil chamber to move reciprocally, so oil is sucked into and out of the oil chamber continuously. Thereby, oil sucking speed and volume are upgraded to save time and labor, and oil pumping efficiency is enhanced.
    Type: Application
    Filed: May 22, 2003
    Publication date: November 25, 2004
    Inventor: Kuo-Chung Yeh
  • Patent number: 6821096
    Abstract: A plural component pumping apparatus including a piston and cylinder for each component to be pumped. Reciprocation of the piston in the cylinder draws the component into the cylinder during an intake stroke of the pumping apparatus and exhausts the material from the cylinder during an exhaust stroke of the pumping apparatus. Intake and exhaust valves are provided into the cylinder. Each of the intake and exhaust valve includes a housing oriented outside the cylinder to facilitate repair or replacement of the valves. A pumping motor on each side of the cylinder is coupled to a support and to the piston to move the support and piston relatively toward each other during the exhaust stroke and relatively away from each other during the intake stroke. A position indicator is coupled to the pumping motor. The pumping motor controls sense the position of the position indicator.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: November 23, 2004
    Assignee: Illinois Tool Works Inc.
    Inventors: Michael J. Kosmyna, Ralph Wisniewski
  • Patent number: 6663360
    Abstract: A injection pump includes a needle valve which is disposed in the pump body cap. An air actuator valve is disposed in the pump piston head. The amount of air fed is controlled by the gap between the needle valve and a needle valve seat which is also located in the pump body cap. At the end of the pumping stroke, a spring on the air actuator valve contacts the bottom surface of the body cylinder chamber to cause the air actuator valve to open and release the trapped air from the body cylinder chamber through the air actuator valve so that the air can exit the pump. This action allows the spring around the piston and plunger to release and return the piston and plunger to the starting position.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: December 16, 2003
    Inventor: James A. Kyer
  • Patent number: 6641375
    Abstract: A pneumatically operated oil pump comprises an outer tube for extending into an oil tank and a sucking tube moveably arranged within the outer tube. The sucking tube includes one-way valve establishing an airtight arrangement with respect to an inner wall of the outer tube. An air operated device is arranged on top of the outer tube and interconnected to the sucking tube located within the outer tube. The device includes an upper operating chamber and a lower operating chamber intercommunicated with an air pipe. The device further includes a movement reciprocally moved within the device when compressed air is introduced into the device so as to move the sucking tube reciprocally.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: November 4, 2003
    Assignee: Lih Yann Co., Ltd.
    Inventor: Po-Lin Liao
  • Publication number: 20030129070
    Abstract: Liquid forced out from volume by pressure created by burned gas from fuel.
    Type: Application
    Filed: January 10, 2002
    Publication date: July 10, 2003
    Inventor: Vladimir Moses Lirtsman
  • Publication number: 20030017061
    Abstract: This pump has two end chambers (2, 3) in which are housed two pistons (4, 5) which pump sea water towards an reverse osmosis membrane (7), and a central chamber (8) in which a sliding block is housed, activated by displacement of the pistons (4 and 5) performing the piloting of a directional valve (9). This pump alternatively provokes the inversion of the external pressure intake towards the front areas of the end chambers (2, 3) and the inversion of the pressure intake of the water rejected by the membrane towards the rear areas of said chambers (2, 3).
    Type: Application
    Filed: September 17, 2001
    Publication date: January 23, 2003
    Inventor: Antonio Pares Criville
  • Patent number: 6447259
    Abstract: An energy recovery device includes at least one cylinder, a piston slidable in the cylinder, a first valve for selectively connecting one end of the cylinder to waste liquid at a first relatively high pressure and to drain and a second valve for allowing feed liquid to enter the other end of the cylinder at a second lower pressure via a feed liquid entry port and to be discharged via a feed liquid discharge port from the other end of the cylinder in response to movement of the piston caused by waste liquid entering the one end of the cylinder. A rod which extends from the other end of the cylinder and into but not through the piston, ensures that the area of the piston acting on the feed liquid is less than the area of the piston acted upon by the waste liquid so that the piston acts as a pressure intensifier to discharge feed liquid through the feed liquid discharge port at a higher pressure than the pressure of waste liquid entering the one end of the cylinder.
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: September 10, 2002
    Assignee: Calder Limited
    Inventor: Peter Elliott-Moore
  • Patent number: 6435843
    Abstract: Two cylindrical pump cylinders are mounted end-to-end. A first piston is placed in the first cylinder, a second piston is placed in the second cylinder, and the pistons are interconnected. In one embodiment compressed air alternately drives the first piston in either direction, causing the interconnected second piston to draw and pump high viscosity liquid in the second cylinder through the use of check valves. In another embodiment compressed air is alternately injected into one side of the first piston and one side of the second piston, thus alternately drawing and pumping liquid on the other side of the pistons. A heating jacket is placed around the cylinder pumping the liquid to heat and thus lower the viscosity of the liquid. Piston movement sensors that sense the limits of piston movement within the cylinders are mounted in the cylinder wall.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: August 20, 2002
    Inventor: Nam Jong Hur
  • Patent number: 6409482
    Abstract: A double-force type pressure cylinder structure includes a gas cylinder secured on a pressurizing cylinder base, and a top cap secured on the gas cylinder. The pressurizing cylinder base has a liquid inlet port forming a first check valve, a liquid outlet port forming a second check valve, and a pressurizing cylinder chamber for receiving a piston rod. The gas cylinder includes a piston, a spring biased between the piston and an end face of the pressurizing cylinder base so that the piston is pushed upward by the spring. The circuit of the compressed air is controlled by air holes in conjunction with the spring so that the piston and the piston rod are reciprocally moved quickly for compressing the hydraulic oil at a high speed, thereby forming a thrust with a high pressure.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: June 25, 2002
    Inventor: Wang Wing Fon
  • Publication number: 20020071771
    Abstract: A hydraulic drive system for providing a smoothed or near sinusoidal output flow characteristic for reciprocating piston pumps. The device occupies a smaller footprint than conventional mechanical reciprocating pumps and allows a standard reciprocating pump to operate at its maximum rated pressure while retaining its maximum rated flow. Several embodiments are disclosed and the drive system may be coupled to standard duplex and triplex pumps. A solution to hydraulic hammer caused by rapid flow reversal in the hydraulic control valves used within the system is presented.
    Type: Application
    Filed: December 10, 2001
    Publication date: June 13, 2002
    Inventor: Cory L. Miller
  • Publication number: 20020039536
    Abstract: Down-sizing of a pump for sucking two types of different fluids is realized. The pump is provided with a cylinder pump having a cylinder main body having a reciprocally movable piston, a first cylinder chamber partitioned at one side of the piston for being introduced with a first fluid, and a second cylinder chamber partitioned at the other side of the piston for being introduced with a second fluid, and piston driving means for reciprocally moving the piston of the cylinder pump.
    Type: Application
    Filed: September 7, 2001
    Publication date: April 4, 2002
    Inventors: Tetsuji Kurata, Hirofumi Hirano, Yoshitaka Okamura, Keiji Takahashi