Fluid Motor For One Stage Supplied From Another Stage Patents (Class 417/245)
  • Patent number: 10738574
    Abstract: An inflow promotion arrangement including a housing; and a promotion configuration within the housing, the promotion configuration actuatable by fluid from a relatively higher productivity index zone of a wellbore.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: August 11, 2020
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Tarik Abdelfattah, Jose Rafael Gonzalez
  • Patent number: 9928346
    Abstract: A prescribed new diagnostic blood test panel is directed for countering autistic and mentally affected births and assessing the continued healthy mental state of the elderly. Six neurotoxins in the blood are analyzed, five of which can produce damage to the brain, namely aluminum, arsenic, lead, mercury and manganese. The sixth, selenium, although a toxin at high levels is in fact a protective element for the brain within a certain concentration range providing important cleansing mechanisms for the alien neurotoxins. This test establishes a baseline set of values for these six neurotoxins and provides needed guidance for preventive measures to minimize potential risk of neurological consequences. This will reduces the risk of autism in new births and is especially valuable to the general public in providing a tool to possibly avoid the consequences of diseases in old age such as dementia, Parkinson's or Alzheimer's.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: March 27, 2018
    Inventor: Keith Schofield
  • Patent number: 9261102
    Abstract: Compressor arrangement having an axial compressor and a radial compressor which are arranged axially one behind the other on a common driveshaft which can be coupled to a drive and which each have a compression fluid input and a compression fluid output. The axial compressor is provided with first control elements and the radial compressor is provided with second control elements. The first control elements and second control elements are controllable separately so that the axial compressor and the radial compressor are controllable separately.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: February 16, 2016
    Assignee: MAN Diesel & Turbo SE
    Inventors: Philipp Gingter, Dieter Weckmüller, Karl-Heinz Dreyer
  • Patent number: 9028222
    Abstract: A variable output pump includes a fluid input, a control stage pump having an input portion and an output portion, a main stage pump having an input portion and an output portion, and a differential linkage in mechanical communication with the control stage pump and the main stage pump. The input portion of the control stage pump is in fluid communication with the fluid input and the input portion of the main stage pump is in fluid communication with the fluid input and the output portion of the control stage pump.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: May 12, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Robert H. Perkinson
  • Publication number: 20150078928
    Abstract: Provided is a compressor, an air conditioner system comprising the compressor and a heat pump water heater system. The compressor comprises: a low-pressure compression component, a medium-pressure chamber, a low-pressure chamber gas discharge passageway, an enthalpy-increasing component, a high-pressure compression component, a medium-pressure gas passageway and a high-pressure chamber gas discharge passageway. The medium-pressure gas passageway comprises a passageway section at the side toward the low-pressure chamber gas discharge passageway and a passageway section at the side toward the high-pressure chamber gas suction passageway, wherein a ratio between a minimum cross sectional area of the passageway section at the side toward the low-pressure chamber gas discharge passageway and a minimum cross sectional area of the passageway section at the side toward the high-pressure chamber gas suction passageway is ranged from 1.4 to 4.
    Type: Application
    Filed: December 7, 2012
    Publication date: March 19, 2015
    Applicants: NATIONAL ENGINEERING CENTER OF GREEN REFRIGERATION EQUIPMENT
    Inventors: Huijun Wei, Wantao Li
  • Patent number: 8956128
    Abstract: A spherical expansion compressor adapted to variable working conditions with a spherical inner chamber, comprises a rolling rotor compressor used as first-stage compression, compression working chambers, expansion working chambers, a gas tank and a pressure control circuit. The pressure control circuit is between the gas tank and a pressure-controlled inlet valve of the rolling rotor compressor, and controls the inlet valve to open/close according to pressure in the gas tank and maintains constant pressure in the tank. A working medium after first-stage compression enters the gas tank, where the pressure control circuit regulates the gas tank pressure. The working medium enters second-stage compression, and expands in the expansion-stage, forming the spherical expansion compressor adapted to variable working conditions.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: February 17, 2015
    Assignee: Xi'An Zhengan Environmental Technology Co., Ltd.
    Inventors: Luyi Wang, Nan Xia
  • Patent number: 8632317
    Abstract: A pump assembly including an air motor includes a pressure regulator assembly connected to a motive fluid inlet of the air motor. The pressure regulator assembly has a housing that contains an actuator assembly, a ball valve assembly, a bleed valve, a first pressure adjustment assembly, and a second adjustment assembly. The housing includes a motive fluid inlet port, a pressure regulator outlet, a bleed valve port, an actuator support, a pressure adjustment chamber, and a ball valve chamber. The pressure regulator assembly includes at least one gauge that displays at least one measurement parameter.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: January 21, 2014
    Assignee: Ingersoll-Rand Company
    Inventor: Thomas R. Headley
  • Patent number: 8632316
    Abstract: An air motor for a pump assembly including a drop tube communicating between an upper chamber port and a top plate port and including a longitudinal axis that is at an angle of between about 0° and 10° with respect to each of the upper chamber longitudinal axis and the top plate port longitudinal axis. The drop tube has a substantially constant internal diameter, a first generally bulbous end, a second generally bulbous end, and first and second slots defined in the respective first and second bulbous ends. First and second seals are positioned in the respective first and second slots, and the first and second seals air-tightly seal an outer surface of the drop tube within the upper chamber port and the top plate port.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: January 21, 2014
    Assignee: Ingersoll-Rand Company
    Inventor: Thomas R. Headley
  • Patent number: 8568108
    Abstract: A fluid channeling device including a channeling body, an axial transfer channel, and a radial outlet channel. The channeling body includes first and second annular body sections spaced axially apart and a tubular body section extending between the first and second body sections. The axial transfer channel is defined axially through the channeling body, and is configured to fluidly couple a first compression assembly with a second compression assembly. The radial outlet channel is defined radially through the channeling body and is configured to fluidly couple the second compression assembly with an outlet.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: October 29, 2013
    Assignee: Dresser-Rand Company
    Inventor: William C. Maier
  • Patent number: 8500416
    Abstract: A pump assembly in the context of a piston pump having a piston carrying a disk which extends radially outwardly to engage a wall of a chamber to substantially prevent fluid flow in one direction and yet permit deflection of the disk away from the wall of the chamber to permit flow in the other direction; the improvement in which two or more of similar such disks are provided spaced axially adjacent one another.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: August 6, 2013
    Assignee: Gotohti.com
    Inventors: Heiner Ophardt, Ali Mirbach
  • Publication number: 20130052047
    Abstract: A variable output pump includes a fluid input, a control stage pump having an input portion and an output portion, a main stage pump having an input portion and an output portion, and a differential linkage in mechanical communication with the control stage pump and the main stage pump. The input portion of the control stage pump is in fluid communication with the fluid input and the input portion of the main stage pump is in fluid communication with the fluid input and the output portion of the control stage pump.
    Type: Application
    Filed: August 26, 2011
    Publication date: February 28, 2013
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Robert H. Perkinson
  • Patent number: 8287249
    Abstract: A two-stage membrane pump having a first pump head and a second pump head is provided. The pump heads are typically crank operated with a camshaft set up such that one pump head is in exhaust mode and the other in inlet mode, and vice-versa, during operation. The membrane and the inlet and outlet valves of the pump heads are designed to work together, along with each pump head working synchronously such that the inlet of the second pump head and exhaust of the first pump head are sealed by the actions of the two membranes. As a result an inlet valve in the second pump head is not needed. The costs of such a pump are thereby reduced while increasing the reliability of the two-stage pump.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: October 16, 2012
    Assignee: Gardner Denver Thomas, Inc.
    Inventors: Richard C. Fuksa, Reno G. Knudsen
  • Patent number: 8087901
    Abstract: A fluid channeling device including a channeling body, an axial transfer channel, and a radial outlet channel. The channeling body includes first and second annular body sections spaced axially apart and a tubular body section extending between the first and second body sections. The axial transfer channel is defined axially through the channeling body, and is configured to fluidly couple a first compression assembly with a second compression assembly. The radial outlet channel is defined radially through the channeling body and is configured to fluidly couple the second compression assembly with an outlet.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: January 3, 2012
    Assignee: Dresser-Rand Company
    Inventor: William C. Maier
  • Publication number: 20110280742
    Abstract: Method and system for a rotary machine, e.g., a back-to-back compressor. A first section includes a first inlet duct, at least one first impeller and a first outlet duct. A second section includes a second inlet duct, at least one second impeller and a second outlet duct. The first section and second section share a common rotor. A first balance drum is disposed between the two sections, while a second section is disposed between the first inlet duct and the rotor. In a single section compressor, the balance drum can be disposed on the inlet side of an impeller rather than a discharge side.
    Type: Application
    Filed: May 10, 2011
    Publication date: November 17, 2011
    Inventor: Denis Guillaume Jean GUENARD
  • Publication number: 20110135506
    Abstract: A multi-stage vacuum pump includes a plurality of rotor elements (14, 16) disposed on a common shaft (10) in a pump housing (12) for configuring multiple pump stages (18, 24, 26). The shaft is driven by an electric motor (40). An inner bearing element (42) is disposed between two rotor elements (14, 16) such that a mechanically favorable bearing arrangement is implemented using a simple configuration of the bearing elements (42, 44) as roller bearings. This is possible in particular due to the separation into two rotor elements (14, 16).
    Type: Application
    Filed: May 5, 2009
    Publication date: June 9, 2011
    Applicant: OBERLIKON LEYBOLD VACUUM GmbH
    Inventors: Markus Henry, Peter Klingner
  • Publication number: 20110127017
    Abstract: An exemplary fan module includes a main fan and an assist fan. The main and assist fans each include a rotor which includes a hub and a plurality of blades around the hub. The assist fan is located below the hub of the main fan. Inner sides of the blades of the assist fan adjacent to the hub of the assist fan are located within a range of a radius of the hub of the main fan along a radial direction of the rotor of the main fan. Outer sides of the blades of the assist fan away from the hub of the assist fan are located beyond the hub of the main fan along the radial direction of the rotor of the main fan. The blades of the assist fan are pushed to rotate by airflow from the main fan to produce airflow towards a heat sink.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 2, 2011
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: HAO-DER CHENG
  • Publication number: 20100239437
    Abstract: A fluid channeling device including a channeling body, an axial transfer channel, and a radial outlet channel. The channeling body includes first and second annular body sections spaced axially apart and a tubular body section extending between the first and second body sections. The axial transfer channel is defined axially through the channeling body, and is configured to fluidly couple a first compression assembly with a second compression assembly. The radial outlet channel is defined radially through the channeling body and is configured to fluidly couple the second compression assembly with an outlet.
    Type: Application
    Filed: March 20, 2009
    Publication date: September 23, 2010
    Applicant: DRESSER-RAND CO.
    Inventor: William C. Maier
  • Publication number: 20100158708
    Abstract: A two-stage membrane pump having a first pump head and a second pump head is provided. The pump heads are typically crank operated with a camshaft set up such that one pump head is in exhaust mode and the other in inlet mode, and vice-versa, during operation. The membrane and the inlet and outlet valves of the pump heads are designed to work together, along with each pump head working synchronously such that the inlet of the second pump head and exhaust of the first pump head are sealed by the actions of the two membranes. As a result an inlet valve in the second pump head is not needed. The costs of such a pump are thereby reduced while increasing the reliability of the two-stage pump.
    Type: Application
    Filed: December 19, 2008
    Publication date: June 24, 2010
    Inventors: Richard C. FUKSA, Reno G. KNUDSEN
  • Publication number: 20100083690
    Abstract: A multistage compressor is provided, which can reduce an oil circulation ratio by reducing the amount of lubricating oil to be taken in by a high-stage compression mechanism to improve the system efficiency and prevent a shortage of lubricating oil. A low-stage compression mechanism and a high-stage compression mechanism are disposed below and above to flank an electric motor, respectively, intermediate-pressure refrigerant gas compressed by the low-stage compression mechanism is discharged into a sealed housing, and the intermediate-pressure refrigerant gas is taken in by the high-stage compression mechanism so as to be compressed in two stages, an oil separator plate that centrifugally separates lubricating oil contained in the intermediate-pressure refrigerant gas, which is taken in by the high-stage compression mechanism after passing through the electric motor, is provided at one end of a rotor of the electric motor such that a rotary shaft extends through the oil separator plate.
    Type: Application
    Filed: August 15, 2008
    Publication date: April 8, 2010
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hajime Sato, Yoshiyuki Kimata
  • Publication number: 20090123302
    Abstract: A screw compressor comprising: a low pressure stage compressor body; a high pressure stage compressor body that further compresses a compressed air compressed by the low pressure stage compressor body; pinion gears for example, respectively, provided on, for example, a male rotor of the low pressure stage compressor body and, for example, a male rotor of the high pressure stage compressor body; a motor; a bull gear for example, provided on a rotating shaft of the motor; and an intermediate shaft supported rotatably and provided with a pinion gear, which meshes with the bull gear, and a bull gear, which meshes with the pinion gears. Thereby, it is possible to make the motor relatively low in rotating speed while inhibiting the gears from being increased in diameter, thus enabling achieving reduction in cost.
    Type: Application
    Filed: January 6, 2009
    Publication date: May 14, 2009
    Inventors: Hitoshi Nishimura, Tomoo Suzuki, Hiroshi Ohta
  • Publication number: 20080253903
    Abstract: Vacuum pumping apparatus includes a housing, one or more primary pumping stages disposed in the housing, a motor coupled to the primary pumping stages, the motor including at least one stationary surface and at least one moving surface when the motor is energized, the stationary and moving surfaces of the motor defining an auxiliary pumping stage coupled in series with the primary pumping stages to pump gas through a pumping channel between the stationary and moving surfaces of the motor, the housing having a first exhaust port between the primary pumping stages and the auxiliary pumping stage, and a second exhaust port at an outlet of the auxiliary pumping stage, and a valve connected in series with the first exhaust port and configured to close when an inlet pressure of the vacuum pumping apparatus is below a predetermined pressure.
    Type: Application
    Filed: April 11, 2007
    Publication date: October 16, 2008
    Inventor: Marsbed Hablanian
  • Patent number: 7354252
    Abstract: A pressure intensifier for fluids has an intensifier piston with a high-pressure piston and a low-pressure piston having a greater diameter than the high-pressure piston. The pistons are moveable in a high-pressure cylinder and a low-pressure cylinder, respectively, and move together. The high-pressure cylinder is connected to a high-pressure connection. A first control line is connected to a supply connector. A second control line is connected to a control valve having first and second switching positions. A first connection connects the control lines. The low-pressure cylinder is connected via the control valve in the first switching position to a supply connector and in the second switching position to a return connector. The switching positions are controlled by the intensifier piston. The intensifier piston opens or closes the first connection between the control lines. The first connection is arranged completely within a movement stroke of the high-pressure piston.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: April 8, 2008
    Assignee: miniBooster Hydraulics A/S
    Inventors: Johannes V. Baatrup, Christen Esperson
  • Publication number: 20070201999
    Abstract: A heat pump system, a method for adjusting a temperature of lubricating water in a heat pump system, and a method for operating a heat pump system, which suppress boiling of lubricating water for bearings and thereby minimize the deterioration in reliability of the bearings. A heat pump system comprising an evaporator 43 for generating steam, and a compressor 34 including a first stage 33 and second stage 32 as a plurality of compression mean for compressing the steam, wherein bearings 51 for supporting the compressor 34 are water bearings, and lubricating water in each of the water bearings 51 is controlled to a temperature less than a saturation temperature associated with an internal pressure of each water bearing 51.
    Type: Application
    Filed: January 18, 2007
    Publication date: August 30, 2007
    Inventors: Takanori Shibata, Shigeo Hatamiya, Toshihiko Fukushima
  • Patent number: 7189320
    Abstract: The invention provides a pump for liquid chromatography excellent in feeding liquid stably at an extremely low flow rate and in discharging bubbles at startup. In a pump for liquid chromatography including a cylinder and a plunger that reciprocates in the cylinder to suck and discharge fluid, the pump further includes a large-flow-rate pump that feeds liquid by the plunger, a small-flow-rate pump that feeds the liquid by the plunger, motion conversion means that converts the rotational motion of a motor to a reciprocating motion, an actuator that directly drives the plunger, and a drive part that drives the actuator, and selectively switches means for driving the plunger.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: March 13, 2007
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Kunihiko Takao, Hironori Kaji, Masahito Ito
  • Patent number: 7140846
    Abstract: A vacuum pump having a rotary shaft that is rotated by a drive source has a main pump and a sub pump. The main pump includes a pump chamber and a gas transferring body that is located in the pump chamber. The main pump is driven by the drive source through the rotary shaft for transferring gas to an exhaust space. The sub pump is connected to the exhaust space for partially exhausting the gas from the exhaust space. The sub pump is driven by the same drive source. The displacement volume of the sub pump is smaller than that of the main pump.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: November 28, 2006
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Shinya Yamamoto, Satoru Kuramoto, Osamu Uchiyama, Daisuke Sato, Mika Fujiwara, Masahiro Kawaguchi, Mamoru Kuwahara, Nobuaki Hoshino, Ryosuke Koshizaka
  • Patent number: 7063513
    Abstract: In a pump for feeding a liquid for chromatography, first and second plungers form first and second volumes respectively together with first and second chambers, the first plunger is prevented from changing the first volume sufficiently for feeding the liquid between the first and second volumes when the second plunger decreases the second volume to discharge the fluid from the second volume to an outlet path of the pump for the chromatography.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: June 20, 2006
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Kenji Hiraku, Kunihiko Takao, Hironori Kaji, Masahito Ito
  • Patent number: 7063785
    Abstract: The invention provides a pump for liquid chromatography excellent in feeding liquid stably at an extremely low flow rate with high accuracy and in discharging bubbles at startup. At startup, a first plunger feeds solvent at a large flow rate to discharge bubbles in a pump and to fill the solvent into the pump in a short time and in a normal operation, the first plunger is stopped and the second plunger is pushed into a second pressure chamber at a low speed to feed the solvent at a low flow rate. When the second plunger reaches full stroke, the second plunger is pulled back at a high speed and at the same time the first plunger is pushed into a first pressure chamber in synchronization with the pullback of the second plunger to control the flow rate passing a discharge passage to a constant value at all times by a controller.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: June 20, 2006
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Kenji Hiraku, Kunihiko Takao, Hironori Kaji, Masahito Ito
  • Patent number: 7028491
    Abstract: A compressor assembly having a first compression mechanism operatively coupled to a first motor and a second compression mechanism operatively coupled to a second motor. The first compression mechanism compresses the vapor from a low pressure to an intermediate pressure and the second compression mechanism compresses the vapor from the intermediate pressure to a discharge pressure. An electrical circuit supplies electrical current to the first and second motors during operation of the compressor assembly. The electrical circuit includes means for, during start-up of the compressor assembly, initiating the supply of electrical current to the first motor at a first time and initiating the supply of electrical current to the second motor at a second time wherein the first time precedes the second time by a time lapse.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: April 18, 2006
    Assignee: Tecumseh Products Company
    Inventor: W. Travis Horton
  • Publication number: 20040146410
    Abstract: A vacuum pump system for delivering light gases and including at least one high-vacuum pump and at least one intermediate pump connected directly with the outlet of the high-vacuum pump and with small conductance losses.
    Type: Application
    Filed: January 24, 2003
    Publication date: July 29, 2004
    Inventors: Armin Conrad, Peter Fahrenbach, Matthias Madler
  • Publication number: 20040107718
    Abstract: A turbomachinery system for cooling a high power density device includes a turbomachine configured to deliver a high flux cooling medium and a high power density device arranged in fluid communication with the turbomachine, the turbomachine having a motor and a compressor driven by the motor.
    Type: Application
    Filed: December 6, 2002
    Publication date: June 10, 2004
    Inventors: Michael Bowman, Mehmet Arik, Chellappa Balan, Warren Bessler, Ronald Bunker, Charles Byrd, William Gerstler, Nirm Nirmalan, Daniel Smith, Todd Wetzel
  • Patent number: 6220824
    Abstract: A vacuum pump, such as a turbomolecular pump, a molecular drag pump or a hybrid pump, is adapted for use with a backing pump. The vacuum pump includes a housing having an inlet port and an exhaust port for coupling to the backing pump, one or more vacuum pumping stages disposed in the housing, each of the vacuum pumping stages having a stationary member and a rotating member, and a gas turbine. The gas turbine includes a gas inlet, a gas outlet coupled to the exhaust port, and a rotor coupled to the rotating members of the vacuum pumping stages. A gas flow, produced by the backing pump, through the gas turbine causes the rotor and the rotating members of the vacuum pumping stages to rotate, wherein gas is pumped by the vacuum pumping stages from the inlet port to the exhaust port.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: April 24, 2001
    Assignee: Varian, Inc.
    Inventor: Marsbed Hablanian
  • Patent number: 6168388
    Abstract: A system and method that permits fluids, such as petroleum, to be pumped from two separate zones. A submergible pumping system, including a submergible electric motor driving a submergible pump, is deployed in a wellbore. The submergible pump intake is located in a first zone to intake a fluid. The fluid is discharged through a fluid-powered pump, such as a jet pump. The jet pump is coupled to a fluid intake disposed in a separate zone within the wellbore. The single system can be utilized to pump fluids from two different zones.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: January 2, 2001
    Assignee: Camco International, Inc.
    Inventors: Anthony D Hughes, Graham Anderson, W. Keith Russell, Nathan Thompson
  • Patent number: 5464330
    Abstract: A two stage pump has coaxial first and second stage reciprocating pumps with the second stage piston reciprocably driven by the first stage piston. Multiple sets of first and second stage pumps are provided, and the second stage pistons can be returned by supercharge pressure, a loose connection between the first and second stage pistons, or a spring. An accumulator which is charged on a compression stroke and discharged on an intake stroke may also be provided in communication with a pumping chamber to improve the efficiency of a pump.
    Type: Grant
    Filed: March 9, 1993
    Date of Patent: November 7, 1995
    Assignee: Applied Power Inc.
    Inventors: George T. Prince, Mark J. Fisher
  • Patent number: 5385449
    Abstract: A compressor arrangement for producing compressed air includes a compressor connected through a line to devices using the compressed gas and a supercharger driven by the exhaust of a heat engine. In order to improve the overall efficiency of the arrangement, the compressor is driven by the drive side of the heat engine and the supercharger is arranged in one of an intake line and a pressure line of the compressor. The pressure line forms the connection between the compressor and a pressure reservoir which is connected through another line to the devices using the compressed gas.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: January 31, 1995
    Assignee: Mannesmann Aktiengesellschaft
    Inventor: Harald Wenzel
  • Patent number: 5156001
    Abstract: In order to limit the heating of fuel in the fuel supply circuit of an aircraft turbo-engine including a high pressure displacement pump driven by the turbo-engine, and an excess fuel return pipe having a pressure regulating valve in parallel with the high pressure pump, a driving unit, such as a turbine, is disposed in the return pipe downstream of the regulating valve to be driven by excess fuel flowing in the pipe. The driving unit may be drivingly connected directly to the drive shaft of the high pressure pump, or indirectly through a gear box through which the turbo-engine is also connected to the drive shaft.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: October 20, 1992
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."
    Inventor: Pierre C. Mouton
  • Patent number: 4966306
    Abstract: A postmix beverage dispensing valve for a beverage dispenser, including a volumetric ratio control device incorporated therein to provide positive ratio control. The device includes a syrup piston and a soda piston linked togeher, syrup and soda chambers, and flow control values for controlling the flow to and from the chambers. The soda pressure drives the pistons.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: October 30, 1990
    Assignee: The Coca-Cola Company
    Inventors: William S. Credle, Jr., Arthur G. Rudick, George J. Jarocki
  • Patent number: 4922719
    Abstract: An improved fluid transformer which is capable of controlling the position of the operating pistons within the apparatus so that pressure equilibrium is maintained and the movements of the pistons are limited to predetermined locations within the cylinders. The transformer is capable of operating in a contaminated environment by purging unwanted fluid contamination from the internal workings of the transformer. Dynamic piston and cylinder seals are positioned such that destructive pressure forces are counteracted by opposite frictional forces during operation, thereby allowing the seals to remain effective at high pressures for long periods of time.
    Type: Grant
    Filed: October 26, 1987
    Date of Patent: May 8, 1990
    Inventor: Donald P. Arbuckle
  • Patent number: 4915593
    Abstract: The use of a single main centrifugal fuel pump for supplying fuel to an aircraft gas turbine engine has advantages over other known systems, however a problem has existed in that the centrifugal pump, when driven in a fixed ratio to the engine speed, cannot deliver fuel at adequate pressure under engine starting conditions. The disclosed fuel supply system using a main centrifugal pump overcomes this shortcoming by having a turbine-driven start pump added to the fuel supply system with both the turbine and the start pump receiving fuel pumped by the main centrifugal pump and the turbine utilizing the high flow, low pressure fuel to drive the start pump which increases the pressure of the fuel to a value adequate for engine starting. The start pump delivers fuel until such time as the main centrifugal fuel pump has reached a speed to provide the fuel to the engine at the required pressure, at which time the turbine is no longer driven and the output of the start pump goes to zero.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: April 10, 1990
    Assignee: Sundstrand Corporation
    Inventor: John E. Cygnor
  • Patent number: 4864815
    Abstract: The use of a single main centrifugal fuel pump for supplying fuel to an aircraft gas turbine engine has advantages over other known systems, however a problem has existed in that the centrifugal pump, when driven in a fixed ratio to the engine speed, cannot deliver fuel at adequate pressure under engine starting conditions. The disclosed fuel supply system using a main centrifugal pump overcomes this shortcoming by having a turbine-driven start pump added to the fuel supply with both the turbine and the start pump receiving fuel pumped by the main centrifugal pump and the turbine utiliziing the high flow, low pressure fuel to drive the start pump which incresases the pressure of the fuel to a value adequate for engine starting. The start pump delivers fuel until such time as the main centrifugal fuel pump has reached a speed to provide the fuel to the engine at the required pressure, at which time the turbine is no longer driven and the output of the start pump goes to zero.
    Type: Grant
    Filed: December 24, 1987
    Date of Patent: September 12, 1989
    Assignee: Sundstrand Corporation
    Inventor: John E. Cygnor
  • Patent number: 4779761
    Abstract: In a post-mix beverage dispenser in which the concentrate is metered (or portioned) by a positive displacement metering pump having check valves, the improvement of a pressure control device for pressurizing the outlet line from the pump to prevent "blow-thru" of pressurized concentrate through the check valves of the pump, whereby the dispenser can be inexpensively used with a pressurized concentrate source. In addition, a post-mix beverage dispensing system including such metering pump and pressure control device and also including a pressurized canister holding pliable 5+1 juice concentrate at a temperature below 32.degree. F., and a heater for heating the concentrate in the concentrate line.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: October 25, 1988
    Assignee: The Coca-Cola Company
    Inventors: Arthur G. Rudick, Robert D. Hughes, IV, Jonathan Kirschner, Kenneth G. Smazik, Gary V. Paisley
  • Patent number: 4705636
    Abstract: This invention relates to an ionic polymer, method for making a coating and a composite membrane therefrom and also relates to products derived from the disclosed methods and polymer. A new lipid-like permselective membrane is disclosed comprising an ultra-thin selective coating deposited on a non-selective but permeable substrate, which may be anionic or cationic, in hollow fiber, tubular or planar form. The method of preparation of the membrane comprises treating the permeable substrate with a solution of the ionic polymer. The polymer is the product of an aromatic monomer, acrylate and vinyl chloride quaternized with a tertiary amine in which at least one of the alkyl groups of the amine contain at least two carbon atoms. The polymer can also be the product of an aromatic monomer and acrylate and the polymer being partially sulfonated. The treatment produces an extremely thin coating that is held tenaciously by electrostatic forces and the hydrophobicity of the polymer determines its permeability.
    Type: Grant
    Filed: July 19, 1985
    Date of Patent: November 10, 1987
    Assignee: The Dow Chemical Company
    Inventors: Hamish Small, Inder Mani
  • Patent number: 4678405
    Abstract: A pump is disclosed for pumping a volatile fluid having a given vapor pressure. The pump of this invention comprises a pump housing comprising an inlet for introducing the liquid at a relatively low static pressure level into the pump housing and an outlet for discharging the liquid from the pump housing at a relatively high static pressure level. A fluid path extends from the inlet to the outlet. A booster stage impeller is rotatively mounted for drawing the fluid through the inlet and for pumping the fluid along the fluid path with an increased kinetic pressure. A diffuser is affixedly disposed within the pump housing to intercept the fluid directed along the fluid path by the booster stage impeller for converting the kinetic pressure imparted to the fluid into increased static pressure.
    Type: Grant
    Filed: February 14, 1984
    Date of Patent: July 7, 1987
    Assignee: Westinghouse Electric Corp.
    Inventor: Harvey G. Allen
  • Patent number: 4205945
    Abstract: A centrifugal boost pump, a primary centrifugal pump and a dynamic machine are driven through a common drive shaft. At low speeds, such as during pump start-up, the elements are in the aforementioned fluid serial relationship such that the dynamic machine, functioning as a pump, provides the primary fluid pressurization. Once a predetermined primary pump discharge pressure is attained, a clutch disengages the centrifugal boost pump and dynamic machine from the primary centrifugal pump, and the discharge of the dynamic machine is routed to a low pressure source. Thereafter, primary fluid pressurization is accomplished by the primary centrifugal pump which also pumps fluid through the dynamic machine, now functioning as a motor and driving the centrifugal boost pump.
    Type: Grant
    Filed: November 24, 1975
    Date of Patent: June 3, 1980
    Assignee: General Electric Company
    Inventor: Donald Y. Davis
  • Patent number: 4097198
    Abstract: This hydraulic engine utilizes two sets of hydraulic cylinders connected to a shaft so as to be alternately pressurized as the shaft is reciprocally driven by a pair of conventional internal combustion chambers. The outlets of all hydraulic cylinders are connected to a common output line via valves. During each power stroke certain of the hydraulic cylinders being pressurized are selectively disconnected (depressurized) from the output line. This effectively decreases the load on the driving chamber, and insures a relatively constant, high pressure hydraulic fluid output level despite changes in supplied force during each power stroke. The selective cylinder disconnection may be implemented programmatically in response to changes in engine parameters such as combustion pressure. The engine also includes a pump for supplying input hydraulic fluid to each set of cylinders while that set is not being compressed. The input fluid force is additive to the power supplied by the operative combustion chamber.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: June 27, 1978
    Inventor: Allen R. Herron
  • Patent number: 4067665
    Abstract: An improved pump system includes a booster turbine unit including a turbine mounted on the same shaft as the booster pump and utilizing a primary pump as the primary fluid power source. Various forms of turbine and booster pump may be used such that either the pressure or rate of flow from the primary pump may be increased substantially by a relatively simple and reliable system. The output of the primary pump may be flowed through the booster turbine including the booster pump or one fluid may be used as the same source and another as the pump system output. Various forms and designs are described.
    Type: Grant
    Filed: June 16, 1975
    Date of Patent: January 10, 1978
    Inventor: Everett H. Schwartzman
  • Patent number: 4066386
    Abstract: A reservoir is provided in the inlet line to a pump in which air and vapor collects. The air and vapor is drawn out by a fuel operated pump and supplied to a fuel/air separator. Fuel passes back to the inlet line and the air and vapor is allowed to escape.
    Type: Grant
    Filed: August 23, 1976
    Date of Patent: January 3, 1978
    Assignee: Rolls-Royce Limited
    Inventors: Christopher Linley Johnson, Colin Millns
  • Patent number: 4053089
    Abstract: A pump dispenser for liquids includes a finger operated piston and cylinder, a valve to allow liquid to enter the pump dispenser during a filling stroke, a chamber to receive said liquid and to store it under increasing hydraulic pressure during a discharge stroke, a spring for storing strain energy as the hydraulic pressure increases, a means for releasing the stored energy when the piston has travelled a predetermined distance relative to its cylinder and a discharge outlet through which liquid is discharged from the chamber as the strain energy is released.This application is a continuation in part of Application Ser. No. 604,744 which application was filed on Aug. 14, 1975, now abandoned, and is, in turn, a continuation of Application Ser. No. 528,642 filed on Dec. 2, 1974, now abandoned.
    Type: Grant
    Filed: June 3, 1976
    Date of Patent: October 11, 1977
    Assignee: Lever Brothers Company
    Inventor: Rustom Kooverji Gamadia
  • Patent number: 4002415
    Abstract: A distributor type fuel injection pump includes an injection pump to which fuel is supplied from one end of a bore accommodating a slidable shuttle. The shuttle is moved towards the one end of the bore during the filling strokes of the injection pump by way of a first valve means and is allowed to move away from said one end of the bore during an interval between the filling strokes of the injection pump by fuel under pressure derived from the outlet of a feed pump by way of a second valve means. An electrically operable valve is provided to limit the amount of fuel which can flow from said other end of the bore and a sensor is provided to detect the position of the shuttle within the bore and which by way of a control circuit actuates said electrically operable valve. A third valve means is provided to admit fluid under pressure to said other end of the bore when it is required to fill the injection pump.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: January 11, 1977
    Assignee: C.A.V. Limited
    Inventors: Wilfrid Edward Walter Nicholls, Paul Lakra
  • Patent number: 3991654
    Abstract: A hydraulic system for use in engines having reciprocating pistons and rotary piston rods wherein hydraulic fluid is supplied to each cylinder to not only lubricate the piston and cylinder but also to facilitate the movement of the piston to the top dead center position.
    Type: Grant
    Filed: March 4, 1975
    Date of Patent: November 16, 1976
    Inventor: Joseph M. Rossi
  • Patent number: 3930756
    Abstract: A metering pulse pump for metering an additive liquid into a liquid carrier under high pressure. A high-pressure, rapidly reciprocating piston pump is provided at its outlet end with a pressure-relief valve including a spring pressure control permitting the valve to open under varying pre-set pressure differentials across the valve. A diaphragm pump having first and second chambers separated by a diaphragm is provided with one of the chambers communicating directly with the outlet of the piston pump upstream of the pressure-relief valve, liquid carrier emitted under pressure from the piston pump serving to drive the diaphragm pump in a pumping stroke, the second chamber of the diaphragm pump having inflow and outflow ports with respective check valves permitting only inflow and outflow of an additive liquid into and out of the second chamber.
    Type: Grant
    Filed: January 14, 1974
    Date of Patent: January 6, 1976
    Assignee: Cat Pumps Corporation
    Inventor: William L. Bruggeman