Integral Pump And Motor Pistons Patents (Class 417/401)
  • Patent number: 11105227
    Abstract: A variable cam timing phaser arrangement is disclosed, comprising: a rotor having at least one vane; a stator co-axially surrounding the rotor, having at least one recess for receiving the at least one vane of the rotor, wherein the at least one vane divides the at least one recess into an first chamber and a second chamber; and a control assembly for regulating hydraulic fluid flow from the first chamber to the second chamber or vice-versa. The control assembly comprises a central on/off piloted valve for allowing or preventing fluid communication between the first and second chambers, and a remotely located solenoid-controlled actuator for controlling the on/off piloted valve. The present disclosure further relates to a method of controlling the timing of a camshaft in an internal combustion engine. The disclosure also relates to an internal combustion engine and a vehicle comprising the disclosed variable cam timing phaser arrangement.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: August 31, 2021
    Assignee: Scania CV AB
    Inventors: Mikael Eriksson, Daniel Olovsson
  • Patent number: 11060415
    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to diagnose a pneumatic actuator-regulating accessor. An example method disclosed herein includes stroking a fluid valve operatively coupled to a field instrument and a pneumatic actuator-regulating accessory by pressurizing an actuator operatively coupled to the fluid valve. The example method also includes blocking a supply to the pneumatic actuator-regulating accessory and the field instrument, exhausting pressurized air from the actuator via the field instrument, measuring at least one of (1) positions of the fluid valve or (2) an output pressure as the pressurized air is exhausted from the actuator, and identifying a first operation of the pneumatic actuator-regulating accessory based on at least one of a travel rate of the fluid valve or the output pressure, the travel rate of the fluid valve based on the measured positions of the fluid valve.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: July 13, 2021
    Assignee: FISHER CONTROLS INTERNATIONAL LLC
    Inventor: Brendan Keith Piscitelli
  • Patent number: 11046087
    Abstract: Examples of vacuum operated pumps are described herein. In an example, a vacuum operated pump includes a plurality of fluid ports, such as an inlet port and an outlet port. The vacuum operated pump may also include a communication port and a diaphragm. The communication port may provide for fluid communication among the plurality of fluid ports. The diaphragm may control the plurality of the fluid ports and the communication port. The diaphragm may mate with the communication port in an idle state of the vacuum operated pump to isolate each of the plurality of fluid ports.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: June 29, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kundan Singh, Cherng Linn Teo
  • Patent number: 11041510
    Abstract: A hydraulic pressure amplifier arrangement (1) is described comprising a supply port (A1), a pressure outlet (A2) connected to the supply port via check valve means (3), an intensifier section (5) having a high pressure piston (6) in a high pressure cylinder (7), a low pressure piston (8) in a low pressure cylinder (9) and connected to the high pressure piston (6), and a control valve (12) controlling a pressure in the low pressure cylinder (9), wherein the control valve (12) comprises a hydraulically actuated valve element (13). Such a pressure amplifier arrangement should have a good operational behavior in a cost effective manner. To this end the control valve (12) comprises spring means 16 acting on the valve element (1) in a direction towards a starting position of the control valve.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: June 22, 2021
    Assignee: PISTONPOWER APS
    Inventor: Peter Zavadinka
  • Patent number: 10989215
    Abstract: A compressor system includes a gas compressor with dry gas seals about a driveshaft. The compressor system also includes a fugitive gas system having a gas conduit in fluid communication with a collection cavity in a collector coupled to the gas compressor to receive fugitive gas leaked through a pressurized gas leakage path. The fugitive gas system may be structured for flaring the gas, and includes a pressure control system with an accumulator tank, and a vent line for venting gas pressure and having a backpressure regulator therein. Fugitive combustible gas is conveyed through a flow restriction orifice downstream of the compressor.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: April 27, 2021
    Assignee: Solar Turbines Incorporated
    Inventors: Donghui Zhang, Christopher Moffatt, Avneet Singh, Sean Garceau
  • Patent number: 10414383
    Abstract: The invention provides an air and fluid cleaning system for propelling a cleaning fluid and air onto a vehicle vision device such as a vehicle camera system. The cleaning system comprises at least one fluid nozzle aimed at the camera; at least one cleaning fluid pump fluidly connected to both a fluid supply conduit and a cleaning fluid source; at least one air nozzle aimed at the vehicle camera; and at least one telescopic air jet fluidly connected to the air nozzle, hydraulically connected to the fluid supply conduit, and operated by the fluid pressure provided by the cleaning fluid pump; such that during a first operation time interval only cleaning fluid is propelled onto the vehicle camera and during a second operation time interval only an air jet burst is propelled onto the vehicle camera. The invention further includes a method for cleaning a vehicle camera exposed to ambient.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: September 17, 2019
    Assignee: KAUTEX TEXTRON GMBH & CO. KG
    Inventors: Chris Davies, Aaron Williams
  • Patent number: 10391208
    Abstract: Systems, methods, and apparatuses for providing installation therapy and negative-pressure therapy are described. The apparatus includes a housing and a moveable barrier disposed in the housing to form a dosing chamber and a pressure chamber. The apparatus also includes a therapy conduit configured to be fluidly coupled to a pressure source and to a canister. The apparatus further includes a fluid inlet fluidly coupled to the dosing chamber and configured to be fluidly coupled to a fluid source and a fluid outlet fluidly coupled to the dosing chamber and configured to be fluidly coupled to a dressing. A pressure inlet is fluidly coupled to the therapy conduit and the pressure chamber; and a check valve is disposed in the therapy conduit.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: August 27, 2019
    Assignee: KCI Licensing, Inc.
    Inventors: Timothy Mark Robinson, Christopher Brian Locke, James A. Luckemeyer
  • Patent number: 10350336
    Abstract: Systems, methods, and apparatuses for providing instillation therapy with a negative-pressure source are described. The apparatus can include a housing having a dosing chamber and a negative-pressure chamber fluidly isolated from each other. The apparatus can also include a moveable barrier disposed in the housing between the dosing chamber and the negative-pressure chamber. The housing includes a fluid inlet in fluid communication with the dosing chamber and a fluid outlet in fluid communication with the dosing chamber. The housing can also include a negative-pressure inlet in fluid communication with the negative-pressure chamber and a biasing element coupled to the moveable barrier. The biasing element is operable to move the moveable barrier between a charge position and a discharge position.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: July 16, 2019
    Assignee: KCI Licensing, Inc.
    Inventors: James A. Luckemeyer, Christopher Brian Locke
  • Patent number: 10286877
    Abstract: The present invention refers a system and a method for automatically cleaning an optic lens mounted on a vehicle, by spraying a washing liquid to remove any type of dirt from the lens such as a clear image or optic signal can be captured anytime, where an air pump is provided including a variable volume compression chamber to pressurize a volume of air, and a washing liquid conduit is communicated with a liquid nozzle and with the air pump, such as the air pump can be operated by the flow of pressurized washing liquid, such as the same flow of pressurized washing liquid is used to clean the optic surface, and to operate the air pump and generate a blast of air to blow off any liquid drop from the optic lens.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: May 14, 2019
    Assignee: FICO TRANSPAR, S.A.
    Inventors: Robert Lopez Galera, Carlos Esteller Pitarch, Miguel Mota López
  • Patent number: 9494146
    Abstract: A housing 10 defining a duct 11 for fluid flow contains a cylinder arrangement 18-20 mounted in or at an outlet end of the duct. An input piston 30 is exposed to the fluid flow through the duct and an obturator member 21 is mounted in the duct 11 and arranged to periodically close the duct downstream of the input piston 30 such that the body of fluid flowing through the duct applies an increased pressure to the input piston. Resulting movement of the input piston can be used to directly provide mechanical power, generate electricity, or provide compression of a volatile fluid which, when ignited, provides thrust through rapid exit of combustion products.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: November 15, 2016
    Assignee: WATE POWERED TECHNOLOGIES LIMITED
    Inventor: Frederick Philip Selwyn
  • Patent number: 9360000
    Abstract: Reciprocating fluid pumps include a pump body including a cavity therein, a plunger located at least partially within the cavity, and a shift canister assembly disposed within the cavity. The shift canister assembly includes a sealing surface for forming a seal against the pump body. An area covered by the seal between the sealing surface and the pump body is less than about 75% of an outer cross-sectional area of the shift canister assembly. The shift canister assembly may include a shift canister and a shift canister cap attached thereto, the shift canister cap comprising the sealing surface. Reciprocating fluid pumps include a shift canister, a shift piston at least partially disposed within the shift canister, and a shift canister cap attached to the shift canister on a longitudinal end of the shift canister opposite the shift piston. Methods include forming such reciprocating pumps.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: June 7, 2016
    Assignee: GRACO FLUID HANDLING (A) INC.
    Inventors: John M. Simmons, Tom M. Simmons, David M. Simmons, Kenji Allen Kingsford
  • Patent number: 9339839
    Abstract: A dosing system for a liquid or viscous dosing material, including an actuator system, that has at least one actuating element and a nozzle with an outlet opening. The dosing system is designed so that during a movement in a closure direction the actuating element is initially moved in a first partial movement in such a way that the actuating element is separated from the closure element at a stop location, intended for that purpose, and then comes into contact with the closure element at the stop location and exerts an impulse on the closure element. This also relates to a corresponding dosing method.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: May 17, 2016
    Assignee: VERMES MICRODISPENSING GMBH
    Inventors: Mario Fliess, Juergen Staedtler
  • Publication number: 20150125315
    Abstract: A piston type pumping apparatus comprises a vertically oriented cylinder having a top and a bottom with a first aperture. There are first and second passageways for liquid in the cylinder at the top and bottom respectively thereof. A piston is reciprocatingly mounted within the cylinder and has an area against which pressurized fluid acts in the direction of movement of the piston. A hollow piston rod is connected to the piston and extends below the piston and slidably through the first aperture. There is a reload chamber below the cylinder. The piston rod extends slidably into the reload chamber and has a third passageway for liquid communicating thereto. A first one-way valve is located in the third passageway. There is also a fourth passageway that extends from the reload chamber to a source of liquid to be pumped and a second one-way valve therein.
    Type: Application
    Filed: January 9, 2015
    Publication date: May 7, 2015
    Inventor: Richard Frederick McNichol
  • Publication number: 20140169993
    Abstract: A cryogen pump, including: a pump section that includes: a bellow with an inlet opening at a first end and an exit opening, the inlet opening in direct fluid communication with a volume of a cryogen, the exit opening at least in fluid communication with a second end of the bellow opposing the first end, a pair of plugs configured to sealingly close the opposing ends of the bellow, the pair of plugs cooperating so that when one plug sealingly closes one of the ends, the other end of the bellow is open; and a drive section configured to drive the pump section in a reciprocating manner so as to move the plugs.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 19, 2014
    Applicant: ICECURE MEDICAL LTD.
    Inventors: Nir Berzak, Simon Sharon, Michael Voloshin, Ron Hilleli
  • Publication number: 20140000866
    Abstract: A pumping assembly includes a hydraulic pump having a hydraulic ram tied to a reciprocating annular piston having a central bore. When the annular piston moves in an upward direction, the hydraulic ram moves toward an extended position extending from the housing. When the annular piston moves in a downward direction, the hydraulic ram moves toward a retracted position retracted within the housing. A polish rod extends up through the central bore of the annular piston and is held in position by a polish rod clamp positioned on top of the hydraulic ram. The polish rod moves with the hydraulic ram. Other pumping systems, devices, and methods are also disclosed.
    Type: Application
    Filed: September 2, 2013
    Publication date: January 2, 2014
    Applicant: 1238585 ALBERTA LTD.
    Inventor: Perry L. St. Denis
  • Patent number: 8573309
    Abstract: The present invention comprises a downhole unit that includes at least one plunger and that uses a power fluid to recover production fluid from a well. The downhole unit recovers production fluid and brings it to the surface of the well during both the downward and upward motion of the at least one plunger. The downhole unit can also optionally dispose of unwanted fluids in a formation.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: November 5, 2013
    Inventor: Eugene Darrell Simmons
  • Patent number: 8529225
    Abstract: An electromagnetic reciprocating fluid device in which a movable member is equipped with permanent magnets, resists a torque rotating the movable member about an axis thereof in the reciprocating direction. The electromagnetic reciprocating fluid device has a pair of electromagnets facing each other, and permanent magnets disposed in a space between the opposed electromagnets and held by a movable member. When an alternating current is applied to coils formed in the electromagnets, a magnetic force is generated between the electromagnets and the permanent magnets, whereby a driving force for reciprocation is applied to the movable member. One end of the movable member is connected to a piston of a first piston-cylinder assembly, while the other end is connected to a piston of a second piston-cylinder assembly.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: September 10, 2013
    Assignee: Nitto Kohki Co., Ltd.
    Inventors: Shigemitsu Ishibashi, Haruki Nakao, Fuminori Hirose
  • Patent number: 8454325
    Abstract: A pump having an increased energy efficiency is provided. The pump has an internal power fluid column and a transfer piston which is reciprocatingly mounted about the power fluid column. The transfer piston defines a product fluid chamber, located above the transfer piston valve, and a transfer chamber, located below the transfer piston valve. The power fluid column has at least one passageway, which allows the fluid inside the power fluid column to be in communication with a power fluid chamber. The power fluid chamber, the transfer chamber, and the product chamber are situated coaxially about the power fluid column.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: June 4, 2013
    Inventors: Norm Fisher, Richard Frederick McNichol
  • Patent number: 8322435
    Abstract: A pressure driven pumping system includes a piston disposed within a first bore of a housing to separate a process chamber from a working chamber. A rod member coupled to the separating member extends into a reduced pressure chamber. The piston has a first face exposed to the process chamber and a second face exposed to the working chamber. The second face has an effective area less than an effective area of the first face. The housing may be placed in seawater at a selected depth. The process chamber can be in fluid communication with a well to pass well fluid into the process chamber at well pressure to move the piston, to discharge seawater from the seawater chamber. The working fluid, typically seawater in a subsea application, is pumped into the working chamber to move the piston, which discharges well fluid from the process chamber.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: December 4, 2012
    Assignee: Hydril USA Manufacturing LLC
    Inventors: Robert Arnold Judge, Peringandoor Raman Hariharan
  • Patent number: 8303272
    Abstract: A hydraulic pump avoids problems with gas lock found in conventional pumps. The pump draws in production fluid in a lower pump volume during the pump's upstroke and diverts the produced fluid to an upper pump volume during the downstroke. Spent power fluid is communicated to the upper pump volume during the pump's upstroke. The pump piston in the upstroke expels the entire volume via a check valve that communicates the upper pump volume with a discharge outlet. The check valve increasing the discharge pressure of the upper pump volume, the upper pump volume of the spent power fluid being greater than the upper pump volume, and the upper pump piston compressing produced gas in the upper pump volume all combine to prevent or reduce the chances that the pump will gas lock during operation.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: November 6, 2012
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Toby Pugh, John Kelleher, Clark Robison
  • Patent number: 8281767
    Abstract: The invention relates to a high-pressure injection system, in particular for auto-igniting internal combustion engines, with at least one high pressure pump and a high pressure reservoir, through which at least one fuel injector is supplied with a fuel under pressure. The high-pressure injection system comprises at least one pressure booster unit which has at least two pressure boosters, each with a high pressure piston which can be driven independently of the other.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: October 9, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Dominik Kuhnke, Dirk Vahle
  • Patent number: 8262371
    Abstract: A pneumatic control device includes a base comprising a reservoir, a first check valve for only allowing hydraulic fluid to flow into the reservoir, and a second check valve for only allowing the fluid to flow out of the reservoir; a hollow cylinder comprising a spring biased piston; a body mounted to the cylinder thereunder and releasably secured to the base, the body comprising a stepped-diameter passageway with a poppet mounted therein; and a cover releasably secured onto the poppet. In response to feeding pressurized air into the cylinder, the fluid in the reservoir flows out during a first stroke of the piston, and the fluid is sucked back into the reservoir during an opposite second stroke of the piston. In one embodiment, the fluid is for actuating a machine vise.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: September 11, 2012
    Inventor: Wen-Feng Wang
  • Patent number: 8161947
    Abstract: The invention relates to a pressure boosting system for at least one fuel injector of a high pressure injection system of an internal combustion engine, having a hydraulic pressure booster that is actuated by a control valve. The hydraulic pressure booster is configured with a pressure boosting piston, which comprises a first pressure booster piston part having a first diameter and a second pressure booster piston part having a second diameter, wherein the first diameter is greater than the second diameter. The pressure booster piston is disposed within a hydraulic reservoir chamber, onto which pressure is applied, together with the first pressure booster piston part having the greater diameter, wherein the accumulator chamber in turn is configured within a base body. The base body has a piston guide body for at least one of the pressure booster piston parts. The piston guide body is at least partially surrounded by an annular space, which is part of the hydraulic accumulator chamber.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: April 24, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Dominik Kuhnke, Dirk Vahle
  • 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: 8021128
    Abstract: A pump powered partly by a mechanical drive and partly by a pressurized fluid flow and comprised of one or more piston-in-cylinder assemblies in which one face of each piston provides a pumping action while a pressurized driving fluid flow is applied to the opposite piston face, thus supplementing the drive force applied to each piston via a piston rod. Input and output of the pumped flow is controlled by pump valves of a non-return poppet type operated by the pumped flow. Input and output of the driving fluid is controlled by poppet-type valves controlled by connection to the pump valves. Piston movement relative to both the cylinder and the piston rod is controlled, and a two-part pump valve is provided to simplify connection to the motor valves.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: September 20, 2011
    Inventor: Colin Alfred Pearson
  • Patent number: 8007256
    Abstract: An electromagnetic reciprocating fluid device in which a movable member is equipped with permanent magnets, resists a torque rotating the movable member about an axis thereof in the reciprocating direction. The electromagnetic reciprocating fluid device has a pair of electromagnets facing each other, and permanent magnets disposed in a space between the opposed electromagnets and held by a movable member. When an alternating current is applied to coils formed in the electromagnets, a magnetic force is generated between the electromagnets and the permanent magnets, whereby a driving force for reciprocation is applied to the movable member. One end of the movable member is connected to a piston of a first piston-cylinder assembly, while the other end is connected to a piston of a second piston-cylinder assembly.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: August 30, 2011
    Assignee: Nitto Kohki Co., Ltd.
    Inventors: Shigemitsu Ishibashi, Haruki Nakao, Fuminori Hirose
  • Patent number: 7967578
    Abstract: A piston type pumping apparatus comprises a vertically oriented cylinder having a top and a bottom with a first aperture. There are first and second passageways for liquid in the cylinder at the top and bottom respectively thereof. A piston is reciprocatingly mounted within the cylinder and has an area against which pressurized fluid acts in the direction of movement of the piston. A hollow piston rod is connected to the piston and extends below the piston and slidably through the first aperture. There is a reload chamber below the cylinder. The piston rod extends slidably into the reload chamber and has a third passageway for liquid communicating thereto. A first one-way valve is located in the third passageway. There is also a fourth passageway that extends from the reload chamber to a source of liquid to be pumped and a second one-way valve therein.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: June 28, 2011
    Inventors: Richard Frederick McNichol, Gordon Bryce
  • Publication number: 20110044830
    Abstract: A pump assembly (10) including two diesel engines (11) that are intended to operate at a relatively constant speed. The engines (11) each drive a variable displacement pump (12) that is preferably a swashplate pump. Fluid under pressure from each pump (12) drives an assembly (13) to pump a fluid such as a 95/5 emulsion, water and/or mud.
    Type: Application
    Filed: June 7, 2005
    Publication date: February 24, 2011
    Applicant: HUNTER HITECH PTY LTD
    Inventor: Bradley John Scott
  • Publication number: 20100158717
    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: Application
    Filed: December 18, 2008
    Publication date: June 24, 2010
    Applicant: MIDWEST PRESSURE SYSTEMS, INC.
    Inventor: Robert A. Vogt
  • Patent number: 7735563
    Abstract: A pressure driven pumping system includes a piston disposed within a first bore of a housing to separate a process chamber from a working chamber. A rod member coupled to the separating member extends into a reduced pressure chamber. The piston has a first face exposed to the process chamber and a second face exposed to the working chamber. The second face has an effective area less than an effective area of the first face. The housing may be placed in seawater at a selected depth. The process chamber can be in fluid communication with a well to pass well fluid into the process chamber at well pressure to move the piston, to discharge seawater from the seawater chamber. The working fluid, typically seawater in a subsea application, is pumped into the working chamber to move the piston, which discharges well fluid from the process chamber.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: June 15, 2010
    Assignee: Hydril USA Manufacturing LLC
    Inventors: Robert Arnold Judge, Peringandoor Raman Hariharan
  • Patent number: 7726283
    Abstract: The invention relates to a pressure booster arrangement for high-pressure injection systems or high-pressure injection system parts of internal combustion engines. A differential piston which operates with a large cross section in a medium-pressure reservoir and with partial cross sections is operative in terms of positive displacement in associated control and work pressure chambers that are separate from the medium-pressure reservoir and that are disposed in a guide body. The guide body guides the differential piston in its strokes and in turn axially adjoins a valve body. The valve body receives control and check valves for controlling communicating lines of the guide body and of the valve body for controllably connecting the control and work chambers to the medium-pressure reservoir or to a relatively pressureless fluid reservoir.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: June 1, 2010
    Assignee: Robert Bosch GmbH
    Inventor: Dirk Vahle
  • Publication number: 20100104451
    Abstract: A system and method for pumping an underground drip includes a pump barrel housing with a plunger and an elongated stroke actuator cylinder sealed to the pump barrel that vertically reciprocates the plunger. The pump barrel and plunger are preferably vented to avoid vacuum lock during pumping. The plunger pumps the fluid located in the drip upwardly to a low pressure tank or a pressurized surface vessel. A ball valve may be screwed onto the siphon line to allow for insertion and removal of the pump barrel and seals the siphon line if the pump is removed. A stuffing box seals the pump barrel to the upper end of the siphon line to prevent air from entering the system. The stuffing box also allows the pump depth to be easily adjustable by sliding the pump in until the pump tags bottom and then tightening at any point needed.
    Type: Application
    Filed: October 29, 2008
    Publication date: April 29, 2010
    Inventor: T. Leon Brown
  • 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: 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: 20080080990
    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: Application
    Filed: September 11, 2006
    Publication date: April 3, 2008
    Applicant: PETRO-CANADA
    Inventor: Grant Duncan
  • Publication number: 20080063544
    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: Application
    Filed: September 7, 2007
    Publication date: March 13, 2008
    Applicant: PETRO-CANADA
    Inventor: Grant Duncan
  • 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: 7175395
    Abstract: A system to intensify pressure supplied by a conventional pump where a piston assembly having two piston members at opposite ends is positioned in a pressure cylinder. The laterally outer subchambers are defined by the piston members and the cylinder and are adapted to receive fluid at an operating pressure provided by the pump and produce intensified pressure at the opposite outer subchamber. A pressure distributing system alternates returning fluid at intensified pressure to the inner subchamber near the outer subchamber creating the intensified pressure.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: February 13, 2007
    Inventor: Daniel L. Forest
  • Patent number: 7165951
    Abstract: A high-pressure fluid is continuously generated with high efficiency without causing pulsation of pressure by reciprocally moving a piston having first, second and third chamber sections under the control of an actuator including an operating pressure source and a directional control valve. With the reciprocating motion of the piston, liquid or fluid such as gas is fed into the first, second and third chamber sections in sequence through check valves and finally discharged outside at high pressure. The actuator is operated hydraulically, mechanically or electrically.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: January 23, 2007
    Inventors: Mitsuharu Magami, Naoyuki Magami, Takuya Magami
  • Patent number: 7082750
    Abstract: A pressurizer for pressurizing a fluid includes: at least two storage tanks, where, for each storage tank, the pressurizer further includes: a propellant entrance valve, a propellant exit valve, a pressurant entrance valve, and a pressurant exit valve, where each of the storage tanks is configured to be filled with the fluid under a low pressure when its propellant entrance and pressurant exit valves are open and its propellant exit and pressurant entrance valves are closed, and to be drained of the fluid under a high pressure by the force of a pressurant when its valves are reversed, where its valves are configured to be opened and closed in a cycle to sequentially fill and drain the storage tank of the fluid, the cycle having a cycle time of between 1 and 500 milliseconds, and where the cycles of the valves of the storage tanks are out of phase with each other such that at some time in which one storage tank is being filled with the fluid, at least one other storage tank is being drained of the fluid.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: August 1, 2006
    Inventor: Andrew F. Knight
  • Patent number: 6942467
    Abstract: There is provided an ultra high vacuum (UHV) compatible lead-through comprises (a) a housing, (b) a first space, within the housing, connected via a first port to a space outside the UHV-compatible lead through, (c) a second space, within the housing, connected via a second port to a closed system containing a polarized gas, (d) a movable component, separating the first space from the second space via an intermediate space, and (e) seals for limiting a penetration of volatile media from the first space into the second space. The lead through is particularly suited for use in the production of polarized gases, such as 3He.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: September 13, 2005
    Inventors: Anselm Deninger, Michael Ebert, Jan Hasse, Werner Heil, Ernst W. Otten, Jörg Schmiedeskamp, Reinhard Surkau
  • 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
  • Patent number: 6860727
    Abstract: A hydraulic pump is equipped with an air motor, which is disposed in a housing and oil reservoir of the hydraulic pump, connected to an air source, and has a piston movable in a tube so that pressured air from the air source can cause reciprocation the a piston to pump hydraulic oil to other equipments such as a jack. The air actuated hydraulic pump is equipped with a pilot operated guided poppet valve comprised of several parts in separable connection, and a muffler so that the user doesn't have to replace the whole piston with a new one if only one of the parts is damaged, and that noise can be reduced when the pump is working.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: March 1, 2005
    Assignee: Tai Lio Enterprise Co., Ltd.
    Inventor: Jeng-Shiung Huang
  • Patent number: 6834522
    Abstract: A device for forming a single or mutli-chamber workpiece by high internal pressure created by a medium capable of flow in the hollow interior of the workpiece. The device contains a forming tool with a cavity accommodating the workpiece and pressure generating equipment for generating the high internal pressure. The pressure generating equipment contains a displacement pump with a pressure converter having a longitudinally coupled displacement body with different working surface areas A1, A2, which operates with a stroke frequency f, whereby strokes of the pressure converter cause a pressure p1 created on the primary side to be raised until a higher secondary pressure p2 is reached on the secondary side.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: December 28, 2004
    Assignee: Alcan Technology & Management Ltd.
    Inventors: Christian Leppin, Markus Gehrig
  • Patent number: 6832620
    Abstract: An apparatus for dosing lubricant into a compressed air flow includes a lubricant container, a pneumatically operated lubricant pump, an injection channel, a non-return valve interposed between the outlet of the pump and the injection channel, and an electronic sensor cooperating with or coupled to the non-return valve so that the sensor emits an electrical signal responsive and corresponding to the stroke travel of the non-return valve. When the pump carries out a lubricant injection cycle, the pressurized lubricant pushes open the non-return valve, flows into the injection channel and from there into a main channel through which compressed air flows. The travel of the valve is sensed by the sensor, and the sensor signal indicates whether the lubricant injection was proper or faulty, e.g. if the proper amount of lubricant was injected.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: December 21, 2004
    Assignee: Lindauer Dornier Gesellschaft mbH
    Inventor: Siegfried Jaeger
  • Patent number: 6773226
    Abstract: An energy exchanger device can be used for exchanging pressure energy from one fluid to another, or may act as a hydraulic compressor or fluid driven pump. A preferred device uses a jet nozzle to rotate a cylindrical rotor block having a number of axially oriented conduits within it. As the rotor turns, one end of each of the conduits is alternately connected, through a first set of ports, to either an inlet for a high pressure fluid, or an outlet for the high pressure fluid from which the energy has been extracted. Correspondingly, the other end of each of the conduits is alternately connected to either an inlet for a low pressure fluid or an outlet for the fluid to which the energy has been transferred. A freely sliding element, such as a ball, may be placed in each of the conduits to isolate the two fluids from each other.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: August 10, 2004
    Inventor: Osamah Mohamed Al-Hawaj
  • Patent number: 6769884
    Abstract: A hydraulic drive system is provided to produce 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: Grant
    Filed: December 10, 2001
    Date of Patent: August 3, 2004
    Inventor: Cory L. Miller
  • Publication number: 20040115069
    Abstract: A hydraulic pump is equipped with an air motor, which is disposed in a housing and oil reservoir of the hydraulic pump, connected to an air source, and has a piston movable in a tube so that pressured air from the air source can cause reciprocation the a piston to pump hydraulic oil to other equipments such as a jack. The air actuated hydraulic pump is equipped with a pilot operated guided poppet valve comprised of several parts in separable connection, and a muffler so that the user doesn't have to replace the whole piston with a new one if only one of the parts is damaged, and that noise can be reduced when the pump is working.
    Type: Application
    Filed: December 12, 2002
    Publication date: June 17, 2004
    Inventor: Jeng-Shiung Huang
  • Patent number: 6736611
    Abstract: An aircraft fluid delivery device (10) including a piston assembly (20), a pilot assembly (22), and a control assembly (24). The control assembly (24) includes non-contact proximity sensors (S1, S2) that sense the position of the piston (28) and a controller (80) that controls the pilot assembly (22), and thus the piston assembly (20), based on information received from the sensors (S1,S2). Specifically, the controller (80) energizes a solenoid (72) to cause fluid to flow through the pilot assembly (22) into a large portion of the piston chamber (30) during the compression stroke of the piston (28). When the solenoid (72) is deenergized during the return stroke of the piston (28), or when the delivery device is electrically turned off, an ejector (60) in the pilot assembly (22) generates a vacuum on the pressure side of the wide portion of the piston chamber (30).
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: May 18, 2004
    Assignee: Goodrich Corporation
    Inventors: James Putt, Michael M. Kugelman
  • Patent number: 6733253
    Abstract: An improved air compressor powered by water having an automatic water valve regulation mechanism. The air compressor includes a resiliently biased piston within a liquid chamber and a ram within a compression chamber, the ram being conjoined with the piston. Inlet and outlet valves for controlling the flow of water with respect to the liquid chamber are provided in one end of the compressor. Ports for the inlet and outlet valves are preferably aligned parallel to the axis of piston reciprocation such that water flows through the ports in the same direction as the direction of piston movement. The automatic valve regulation mechanism includes a positioning disc and positioning spring, together holding each of the water valves in one of two positions.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: May 11, 2004
    Inventor: Richard W Vockroth