Priming And Venting Patents (Class 417/199.2)
  • Patent number: 11873713
    Abstract: The present disclosure relates to an oil well monitoring apparatus and method. The oil well monitoring apparatus includes a mixed liquid inlet and a mixed liquid outlet of a mixed liquid of oil, gas, and water in a ground pipeline connected to a wellhead of an oil well, a gas-liquid separator, an inlet of which is connected to the mixed liquid inlet, and a liquid monitoring member, which is connected between a liquid outlet of the gas-liquid separator and the mixed liquid outlet, and a gas monitoring member, which is connected between a gas outlet of the gas-liquid separator and the mixed liquid outlet, and a data processing device, which is configured to calculate a liquid production amount of the oil well based on the liquid monitoring data and calculate a gas production amount of the oil well based on the gas monitoring data.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: January 16, 2024
    Assignee: Shandong Tiangong Petroleum Equipment Co., Ltd.
    Inventors: Haifeng Tian, Xinhua Li, Jianlin Wang
  • Patent number: 11339782
    Abstract: A multi-chamber impeller pump includes an impeller, circumferentially spaced cams defining an impeller chamber, and circumferentially spaced evacuation ports. Each cam includes an engagement edge, an arcuate cam surface sloping radially inward, and a lobe. Each evacuation port is proximal to an intersection of a respective arcuate cam surface and lobe. As the impeller rotates, a corresponding end of a leading blade contacts a respective engagement edge and then a corresponding end of a trailing blade contacts the respective engagement edge thereby forming a unit chamber between leading and trailing blades. As the impeller continues to rotate, the end of the leading blade contacts a respective lobe and displaces the leading blade to decrease the volume of the unit chamber and expel fluid from the unit chamber through a respective evacuation port. A method of using the multi-chamber impeller pump is also disclosed.
    Type: Grant
    Filed: June 18, 2021
    Date of Patent: May 24, 2022
    Assignee: LeimbachCausey, LLC
    Inventor: Matthew August Leimbach
  • Patent number: 10683863
    Abstract: An internal gear pump includes a pinion, a ring arranged around the pinion, and a cylindrical wall arranged around the ring. A support element, on which the pinion and the ring are supported, carries high-pressure liquid towards a recess located at the junction between the ring and the cylindrical wall, and also carries low-pressure liquid towards another recess located at another point of the junction between the ring and the cylindrical wall. The recess allows the load of the ring on the cylindrical wall to be reduced.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: June 16, 2020
    Assignee: Safran Aero Boosters S.A.
    Inventors: Albert Cornet, Mathieu Chenoux
  • Patent number: 10544795
    Abstract: A self-priming pump is described that has a housing, an inlet, and an outlet. A first impeller has a first pump section that is arranged in a first chamber, and a second impeller has a second pump section that is arranged in a second chamber. A shaft section is provided between the pump sections, and has a shaft end and penetrates an opening in a housing wall. To improve the net positive section head of the pump, the shaft section between a constriction and the shaft end is formed to taper from the shaft end toward the constriction, and the first impeller and shaft section between the constriction and first pump section has a smooth contour.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: January 28, 2020
    Assignee: GEA Tuchenhagen GmbH
    Inventors: Stephan Dirks, Markus Pawlik
  • Patent number: 10422337
    Abstract: A self-priming, centrifugal pump comprising a first housing part having a front wall with an inlet, a second housing part having an outlet, an impeller rotatably arranged in the second housing part and a pump screw rotatably arranged in the first housing part, connected to the impeller and comprising a center body around which a helical blade is arranged for feeding the impeller with any gas that is present in the liquid, wherein the center body is arranged at a distance from a side of the front wall that faces the center body, such that a channel with a width of at least 12 mm is formed between the center body and the side of the front wall that faces the center body.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: September 24, 2019
    Assignee: ALFA LAVAL CORPORATE AB
    Inventors: Poul Anton Daugaard, Jesper Raabjerg Jensen, Kenneth Rehhoff
  • Patent number: 10167869
    Abstract: The present invention discloses an online monitoring system, comprising a self-priming pump, a first sample pipe and a container containing a sample to be tested, and the first sample pipe connects the self-priming pump and the container, and the self-priming pump transports the ample to be tested in the container to the first sample pipe; the online monitoring system further comprises a fluid supplementation device connected with the first sample pipe, and a default level value is preset in the fluid supplementation device, and the fluid supplementation device monitors a level of the sample to be tested in the first sample pipe, and extracts the sample to be tested from the container to supplement to the first sample pipe as the level value of the sample to be tested in the first sample pipe is lower than the default level value.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: January 1, 2019
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventor: Yanping Yin
  • Patent number: 10145349
    Abstract: A vehicle includes an internal combustion engine having an auto stop function, an electric pump motor drivably coupled to a transmission pump and a heat exchanger pump, and at least one controller. The controller is configured to control the pump motor to operate the transmission pump to supply hydraulic pressure to a transmission, and to operate the heat exchanger pump to provide flow from the engine to a heater core radiator in response to the engine being auto stopped.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: December 4, 2018
    Assignee: Ford Global Technologies, LLC
    Inventor: Mathew Alan Boesch
  • Patent number: 10107248
    Abstract: A vehicle includes an internal combustion engine having an auto stop function, an electric pump motor drivably coupled to a transmission pump and a heat exchanger pump, and at least one controller. The controller is configured to control the pump motor to operate the transmission pump to supply hydraulic pressure to a transmission, and to operate the heat exchanger pump to provide flow from the engine to a heater core radiator in response to the engine being auto stopped.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: October 23, 2018
    Assignee: Ford Global Technologies,LLC
    Inventor: Mathew Alan Boesch
  • Patent number: 8998586
    Abstract: A self-priming pump assembly is disclosed. In an illustrative embodiment, the self-priming pump assembly includes a motor, a main pump having a main pump impeller, a vacuum pump having a vacuum pump impeller, and a drive shaft driven by the motor. The main pump impeller and the vacuum pump impeller may be directly coupled to and driven by the drive shaft, and may rotate about the rotation axis of the drive shaft. In some instances, the vacuum pump impeller is situated between the motor and the main pump impeller, while in other instances, the main pump impeller may be situated between the vacuum pump impeller and the motor. In some cases, bearings may be provided at or near the vacuum pump to help support the vacuum pump relative to the drive shaft.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: April 7, 2015
    Inventor: David Muhs
  • Patent number: 8814533
    Abstract: Flood water removal systems including a motor, a vacuum generating device, a discharge pump, and a vacuum tank can be efficiently arranged to be transversely mounted to a vehicle. Certain flood water removal systems can include a supercharger driven by the engine to generate vacuum. The systems can include a valve to prevent collapse of a vacuum tank and maintain a predetermined vacuum pressure without varying the speed of the motor. The systems can also include a two-stage exhaust that blends exhaust from the blower with motor exhaust in a silencer to reduce noise generation for operation in residential or other noise-sensitive settings. The systems can also include a vacuum tank comprising a noise reduction baffle to further reduce noise generation.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: August 26, 2014
    Inventors: Mark Exner, Bill Exner, Aaron S. Bingle, Eric A. Bingle, David Cody Sizemore
  • Patent number: 8740576
    Abstract: A pumping system and a method for pumping liquid from a lower level to an operatively higher level are disclosed. The pumping system includes a pumping device, a bent delivery conduit, a single control port opening and control elements. The conduit has an operatively inclined ascending conduit section; an operatively inclined descending conduit section and an operatively horizontal peak section between the inclined sections; one end of the ascending conduit fitted to the outlet of the pumping device and one end of the descending conduit being below liquid level of the higher level. The single port opening is provided at the junction between the horizontal peak section and the descending conduit section, and spaced apart from the ascending conduit junction. The control elements introduce pressurized air into and evacuate air from the delivery conduit through the single port opening.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: June 3, 2014
    Assignee: Rahul Nanubhai Amin
    Inventor: Madhav Shrinivas Konnur
  • Patent number: 8631777
    Abstract: A hand operated primer pump for small marine or other engines generally spark ignition engines used on stern drive boats that prevents transfer of hydrocarbons into the atmosphere. The primer generally mimics and replaces prior art rubber primer bulbs in general shape and possibly color, although it can be made in any shape or color. It generally contains a pump that delivers a precise measured amount of fuel with each stroke of the actuator. The primer can have an ergonomically designed actuator that creates the farthest distance from a fulcrum point for maximum leverage and hence, maximum ease of use. The primer is generally designed with a continuous molded fuel path to seal any source of hydrocarbon leakage as well as being made from materials that prevent transfer of hydrocarbons to the atmosphere.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: January 21, 2014
    Assignee: Bluskies International LLC
    Inventors: Christopher Brown, Marvin Peplow
  • Patent number: 8591199
    Abstract: An improved system and methodology for starting up a gas-turbine driven multi-stage compressor. The improvement involves isolating individual compression stages and creating positive pressure in each stage prior to initiating rotation of the compressor/driver system. The isolation of individual compression stages allows the turbine to reach normal operating speeds with substantially no supplemental power from an auxiliary source.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: November 26, 2013
    Assignee: ConocoPhillips Company
    Inventors: Bobby D. Martinez, John R. Wolflick, Jaleel Valappil
  • Patent number: 8539922
    Abstract: A hand operated primer pump for small marine or other engines generally spark ignition engines used on stern drive boats that prevents transfer of hydrocarbons into the atmosphere. The primer generally mimics and replaces prior art rubber primer bulbs in general shape and possibly color, although it can be made in any shape or color. It generally contains a pump that delivers a precise measured amount of fuel with each stroke of the actuator. The primer can have an ergonomically designed actuator that creates the farthest distance from a fulcrum point for maximum leverage and hence, maximum ease of use. The primer is generally designed with a continuous molded fuel path to seal any source of hydrocarbon leakage as well as being made from materials that prevent transfer of hydrocarbons to the atmosphere.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: September 24, 2013
    Assignee: Bluskies International, Inc.
    Inventors: Christopher Brown, Marvin Peplow
  • Patent number: 8172549
    Abstract: In order to ventilate a centrifugal pump (1) having a centrifugal pump outlet space (6) and a centrifugal pump suction space (4), as well as having an additional ventilation pump (3), preferably configured as a vacuum pump, having a ventilation pump inlet (14) and a ventilation pump outlet (15), which pump has a particularly simple structure and which can automatically ventilate itself, if necessary, without any complicate switching processes, it is proposed that both the ventilation pump inlet (14) and the ventilation pump outlet (15) are connected with the centrifugal pump outlet space (6) by way of a connection line (16, 17), in each instance, forming a secondary line.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: May 8, 2012
    Assignee: Alfa Laval Kolding A/S
    Inventor: Jesper Raabjerg Jensen
  • Patent number: 8172550
    Abstract: Provided is a vacuum self priming pump. The pump includes an actuating member that is installed in an outlet by a hinge shaft to be capable of rotating and configured to be quickly opened by water pressure when water is discharged through the outlet, an arm that extends from the actuating member to an external side over the outlet, a clutch unit that is movably formed in a length direction of a rotational shaft of a motor to selectively transfer power to an eccentric wheel to free-rotate the eccentric wheel on the rotational shaft, and a transferring unit that is installed between the arm and the clutch unit to cut off the power from the clutch unit to the eccentric wheel when the arm moves.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: May 8, 2012
    Inventor: Hyokeun Ji
  • Patent number: 8128340
    Abstract: A stacked pump arrangement for mixed-media flow includes a first, self-priming, centrifugal pump with a volute having an inlet and an outlet and a second straight centrifugal pump mounted to an upper portion of the first centrifugal pump, the second straight centrifugal pump also having a volute with an inlet and an outlet. A transition chamber is connected, at one end, to the first centrifugal pump volute outlet and is connected, at another end, to the second straight centrifugal pump volute inlet.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: March 6, 2012
    Assignee: Gorman-Rupp, Co.
    Inventors: Donald W. Racer, Michael L. Keith
  • Patent number: 8123458
    Abstract: A stacked pump arrangement for mixed-media flow includes a first, self-priming, centrifugal pump with a volute having an inlet and an outlet and a second straight centrifugal pump mounted to an upper portion of the first centrifugal pump, the second straight centrifugal pump also having a volute with an inlet and an outlet. A transition chamber is connected, at one end, to the first centrifugal pump volute outlet and is connected, at another end, to the second straight centrifugal pump volute inlet.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: February 28, 2012
    Assignee: The Gormann-Rupp Co.
    Inventors: Donald Racer, Michael L. Keith
  • Publication number: 20110318196
    Abstract: A vacuum accessory and a pump motor assembly are disclosed. An exemplary pump motor assembly includes a motor having a housing. The motor drives a pump impeller. The pump motor assembly further includes a primer assembly secured to the motor, the primer assembly defining an impeller cavity receiving the pump impeller. The primer assembly includes a primer cavity in fluid communication with the impeller cavity, and a fluid inlet in fluid communication with the primer cavity. The fluid inlet is configured to receive fluid from a fluid reservoir, and the pump impeller is configured to pump the fluid from the impeller cavity when the motor is driven.
    Type: Application
    Filed: March 10, 2008
    Publication date: December 29, 2011
    Inventors: John J. Alberts, III, James D. Jakubos
  • Patent number: 8075282
    Abstract: An agricultural sprayer includes a centrifugal pump used for transferring fluid from a nurse tank to fill the sprayer tank. It is sometimes required that the centrifugal pump be primed in order to perform the transfer of fluid and this priming is done by creating a vacuum in a priming line that is connected to a suction line extending between an inlet of the pump and to a discharge line of the nurse tank, with the vacuum being caused by routing a flow of compressed air through a venturi having its throat coupled to the priming line.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: December 13, 2011
    Assignee: Deere & Company
    Inventors: Daniel Joseph Huegerich, Travis Gene Funseth, Tonya Marie O'neal, Richard Allen Humpal
  • Patent number: 8072086
    Abstract: A system and method to efficiently store and convert erratic wind and solar electrical energy production to a source of reliable standard AC electrical power by means of an electric motor operatively engaged to power a pump. The pump in a sealed communication with a reservoir cavity evacuates air from the cavity to store the generated energy as potential energy in the form of a pressure differential with ambient atmosphere. Regulated air inflow into the evacuated cavity is employed to drive a generator or alternator to produce electric power which is synchronized with grid demand and communicated to the grid.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: December 6, 2011
    Inventor: Samuel Thomas Kelly
  • Patent number: 8069830
    Abstract: A hand operated primer pump for small marine or other engines generally spark ignition engines used on stern drive boats that prevents transfer of hydrocarbons into the atmosphere. The primer generally mimics and replaces prior art rubber primer bulbs in general shape and possibly color, although it can be made in any shape or color. It generally contains a pump that delivers a precise measured amount of fuel with each stroke of the actuator. The primer can have an ergonomically designed actuator that creates the farthest distance from a fulcrum point for maximum leverage and hence, maximum ease of use. The primer is generally designed with a continuous molded fuel path to seal any source of hydrocarbon leakage as well as being made from materials that prevent transfer of hydrocarbons to the atmosphere.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: December 6, 2011
    Inventors: Christopher Brown, Marvin Peplow
  • Patent number: 8029245
    Abstract: A portable pumping system provides insulin or other drugs to a user. A shape memory element is used to actuate the pump and an intelligent system controls the actuator in order to minimize stresses within the system and provide accurate and reliable dosage delivery. The control system utilizes various types of feedback to monitor and optimize the position of the pumping mechanisms. Physical design aspects also minimize stress and the combination of the physical design aspects and the intelligent operation of the system results in a lightweight and cost effective pump that may be used in a disposable fashion if desired.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: October 4, 2011
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Benjamin M. Rush, Christopher V. Reggiardo, Arthur E. Anderson, III
  • Patent number: 8020399
    Abstract: A high pressure mister cooling system having an electric fan, a high pressure pump mounted on the fan, an eccentric on the fan motor shaft, and mister nozzles mounted on the fan guard. A pump shaft is reciprocated by the eccentric when the fan is operated. A pump body includes a pump piston and bore, an inlet valve that opens when supply pressure exceeds 20 psi, a pump outlet valve that opens when pump pressure exceeds 120 pounds, and a pressure limiting valve that opens when pump pressure exceeds 1000 pounds. Water flows only when an inlet supply is attached and the fan is operating, and outlet pressure to the mister nozzles is controlled at about 1000 psi.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: September 20, 2011
    Assignee: T&B Financial Services, Inc.
    Inventor: John Edward Hall, III
  • Patent number: 7993109
    Abstract: A portable pumping system provides insulin or other drugs to a user. A shape memory element is used to actuate the pump and an intelligent system controls the actuator in order to minimize stresses within the system and provide accurate and reliable dosage delivery. The control system utilizes various types of feedback to monitor and optimize the position of the pumping mechanisms. Physical design aspects also minimize stress and the combination of the physical design aspects and the intelligent operation of the system results in a lightweight and cost effective pump that may be used in a disposable fashion if desired.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: August 9, 2011
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Benjamin M. Rush, Christopher V. Reggiardo, Arthur E. Anderson, III
  • Patent number: 7993108
    Abstract: A portable pumping system provides insulin or other drugs to a user. A shape memory element is used to actuate the pump and an intelligent system controls the actuator in order to minimize stresses within the system and provide accurate and reliable dosage delivery. The control system utilizes various types of feedback to monitor and optimize the position of the pumping mechanisms. Physical design aspects also minimize stress and the combination of the physical design aspects and the intelligent operation of the system results in a lightweight and cost effective pump that may be used in a disposable fashion if desired.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: August 9, 2011
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Benjamin M. Rush, Christopher V. Reggiardo, Arthur E. Anderson, III
  • Patent number: 7922458
    Abstract: A portable pumping system provides insulin or other drugs to a user. A shape memory element is used to actuate the pump and an intelligent system controls the actuator in order to minimize stresses within the system and provide accurate and reliable dosage delivery. The control system utilizes various types of feedback to monitor and optimize the position of the pumping mechanisms. Physical design aspects also minimize stress and the combination of the physical design aspects and the intelligent operation of the system results in a lightweight and cost effective pump that may be used in a disposable fashion if desired.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: April 12, 2011
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Benjamin M. Rush, Christopher V. Reggiardo, Arthur E. Anderson, III
  • Publication number: 20110044827
    Abstract: A self-priming pump assembly is disclosed. In an illustrative embodiment, the self-priming pump assembly includes a motor, a main pump having a main pump impeller, a vacuum pump having a vacuum pump impeller, and a drive shaft driven by the motor. The main pump impeller and the vacuum pump impeller may be directly coupled to and driven by the drive shaft, and may rotate about the rotation axis of the drive shaft. In some instances, the vacuum pump impeller is situated between the motor and the main pump impeller, while in other instances, the main pump impeller may be situated between the vacuum pump impeller and the motor. In some cases, bearings may be provided at or near the vacuum pump to help support the vacuum pump relative to the drive shaft.
    Type: Application
    Filed: August 24, 2010
    Publication date: February 24, 2011
    Inventor: David Muhs
  • Patent number: 7878769
    Abstract: A pump-priming device configured to fit within the pump inlet circuit formed in the valve body of an automatic transmission is disclosed. The present pump priming device comprises a fluid-conducting structure having a fluid inlet and a fluid outlet, which is fabricated from sheet metal or flexible tubing and is designed to be installed within the original equipment manufacture valve body as a drop-in-place component. The present pump priming device diverts the flow of automatic transmission fluid (i.e. regulator exhaust fluid) released by the pressure regulator valve, which under normal operating conditions would flow from the pressure regulator valve back to the sump, and to redirect such flow of regulator exhaust fluid back to the pump inlet. Such redirection of regulator exhaust fluid pressurizes the pump inlet circuit and raises the output of the pump to provide adequate transmission fluid flow within the hydraulic system at low engine speeds.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: February 1, 2011
    Assignee: Sonnax Industries, Inc.
    Inventors: Robert C. Warnke, Jesse C. Warnke
  • Publication number: 20110008183
    Abstract: A self priming pump system that includes a motor coupled to a centrifugal pump for driving the centrifugal pump. A separator having a reservoir is provided for storing a limited amount of pumped fluid in advance of the centrifugal pump. A vacuum source provides a vacuum suction to the reservoir to draw pumped fluid into the reservoir to prime the pump. To increase the reliability of the vacuum pump system, a deflector and/or extension may be provided in the reservoir to help prevent pumped fluid from entering the vacuum pump input. Also, the configuration of a tank used to store liquid for the vacuum pump system may be configured to separate and collect sediments near a drain port, which then can be easily drained. For positive head pressures, one or more valves may be used to prevent pumped fluid from escaping the reservoir, if desired.
    Type: Application
    Filed: September 13, 2010
    Publication date: January 13, 2011
    Inventor: David Muhs
  • Patent number: 7794211
    Abstract: A self priming pump system that includes a motor coupled to a centrifugal pump for driving the centrifugal pump. A separator having a reservoir is provided for storing a limited amount of pumped fluid in advance of the centrifugal pump. A vacuum source provides a vacuum suction to the reservoir to draw pumped fluid into the reservoir to prime the pump. To increase the reliability of the vacuum pump system, a deflector and/or extension may be provided in the reservoir to help prevent pumped fluid from entering the vacuum pump input. Also, the configuration of a tank used to store liquid for the vacuum pump system may be configured to separate and collect sediments near a drain port, which then can be easily drained. For positive head pressures, one or more valves may be used to prevent pumped fluid from escaping the reservoir, if desired.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: September 14, 2010
    Assignee: Water Management Systems
    Inventor: David Muhs
  • Publication number: 20100132675
    Abstract: A vehicular fuel system includes a suction pump having an inlet and an outlet, a priming pump having an inlet and an outlet, a valve and a fluid conduit assembly having a first port coupled to the outlet of the priming pump, a second port coupled to the inlet of the suction pump, and a third port coupled to the valve. The fluid conduit assembly and the valve are configured such that when the priming pump is operated, fluid flows from the outlet of the priming pump, through the first port and second ports, and into the inlet of the suction pump and when the suction pump is operated, fluid flows through the valve and the third and second ports, and into the inlet of the suction pump.
    Type: Application
    Filed: December 3, 2008
    Publication date: June 3, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: William L. VILLAIRE, David E. WINN, Robert HALSALL
  • Patent number: 7452191
    Abstract: According to the invention, a vacuum pump is disclosed comprising a screw-rotor pump having a compression section (8) and an expansion section (7), and wherein a discharge (10) from the compression section communicates with at least one ejector (1) for discharge of compressed gas through the ejector, and wherein the expansion section (7) is connectable via a first valve means (5), to a drive-gas source (P) for operating the screw,-rotor pump and the ejector in parallel. Also, a method for providing sub-pressure to an industrial process is disclosed wherein at least one ejector (1) is used initially to reduce the pressure to a predetermined lower level, from where the pressure is further reduced by means of a screw-rotor pump (7, 8) that is arranged to operate through, and in parallel with the ejector.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: November 18, 2008
    Assignee: PIAB AB
    Inventor: Peter Tell
  • Patent number: 7331769
    Abstract: A pumping system including a fluid inlet line and a primary pump for the fluid. The primary pump includes an impeller in an impeller chamber, with the impeller chamber adapted to receive fluid from the inlet line. A suction chamber is above the impeller chamber, with a throttle opening between the impeller chamber and the suction chamber. A priming pump is adapted to draw fluid through the throttle opening into the suction chamber. A fluid path is provided around the impeller chamber and between the inlet line and the suction chamber, with the fluid path having a larger area than the throttle opening and including a float restrictor.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: February 19, 2008
    Assignee: Smith & Loveless, Inc.
    Inventors: Frank G. Weis, Robert J. Davis
  • Patent number: 7287963
    Abstract: A pump priming system may include two or more pumps. In one example, a system for pump priming can include a first pump and a second pump. Each pump can have an inlet adapted for a suction force and an outlet adapted for a pressure force. The system can include a tube or bleeder, in which a first end of the tube is connected to the outlet of the first pump and a second end of the tube is connected to the inlet of the second pump. The tube can be adapted for a flow from the first pump to the second pump. The tube can be capable of removing air from the first and second pumps.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: October 30, 2007
    Assignee: Dimension One Spas
    Inventor: Phillip Basora
  • Patent number: 7037086
    Abstract: A self-priming centrifugal pump comprises an inlet and an outlet, and a centrifugal impeller for receiving liquid from the inlet and delivering it to the outlet. An inlet valve and an outlet valve are provided, and a diaphragm arrangement is driven by the same motor as the impeller to provide priming. The diaphragm arrangement can be integrated into a pump design without taking up significant additional space. By driving the diaphragm arrangement with the motor, no additional power source is required.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: May 2, 2006
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventor: James A. Irvine
  • Patent number: 6923646
    Abstract: There is disclosed a process and apparatus for withdrawing an exhaust stream including gas, liquids and solids from the dental operatory connected to the suction side of a vacuum pump wherein solids and liquids are sequentially removed such that compressed gas from the vacuum pump is passed through a heat exchanger for cooling, thus permitting the use of lightweight, less expensive conduit piping for a vent exhaust conduit.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: August 2, 2005
    Assignee: Air Techniques, Inc.
    Inventors: Henry Hubner, Elliot R. Gemunder, Selwyn Foster, Jr.
  • Patent number: 6837690
    Abstract: A pump, such as a rotary vane pump, roller cell pump, or gear pump for delivering diesel fuel, with a pump housing and a pumping unit that is arranged in the pump housing and driven for rotation via the drive shaft of a motor. The pump housing has an intake and an outlet, and the pump further has a hand pump unit that is integrally joined to the pump housing and delivers the fuel into the intake of the pump housing and thus into the flow path of the pumping unit.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: January 4, 2005
    Assignee: Luk Fahrzeug-Hydraulik GmbH & Co. KG
    Inventors: Joachim Schreiber, Karsten Schnittger
  • Patent number: 6837692
    Abstract: A centrifugal pump with facilitated self-priming, which comprises a casing with a suction inlet and a discharge outlet and with an internal series of diffusers and impellers, which form a cylindrical assembly that forms, together with the casing, an annular interspace which is connected to the inside of the series of diffusers and impellers on the discharge side through corresponding openings and on the inlet side through a hole arranged perimetrically in the intake region; the hole is controlled, on the side of the interspace, by a normally-open flexible metallic laminar valve. A wall of the pump struck by the fluid exiting from the interspace through the controlled hole is shaped so as to have a double symmetrical channel for imparting to the fluid a double vortex before passing through the first impeller.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: January 4, 2005
    Assignee: DAB Pumps S.p.A.
    Inventor: Davide Martinello
  • Patent number: 6692234
    Abstract: A self priming pump system that includes a motor coupled to a centrifugal pump for driving the centrifugal pump. A separator having a reservoir is provided for storing a limited amount of pumped fluid in advance of the centrifugal pump. A vacuum source provides a vacuum suction to the reservoir to draw pumped fluid into the reservoir to prime the pump. To increase the reliability of the vacuum pump system, a deflector and/or extension may be provided in the reservoir to help prevent pumped fluid from entering the vacuum pump input. Also, the configuration of a tank used to store liquid for the vacuum pump system may be configured to separate and collect sediments near a drain port, which then can be easily drained. For positive head pressures, one or more valves may be used to prevent pumped fluid from escaping the reservoir, if desired.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: February 17, 2004
    Assignee: Water Management Systems
    Inventor: David Muhs
  • Patent number: 6682313
    Abstract: A pump primer for a pump on a fire truck uses a high-speed compressed air in a venturi in a compressed air chamber to generate a vacuum in a vacuum chamber to prime a pump, with an integral valve which separates the pump from the priming ejectors (venturis), the valve being opened by the compressed air when the primer is activated, the valve being closed by a spring return when the compressed air supply is removed, where water drawn in through the primer is freely drained by gravity to prevent freezing in cold weather.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: January 27, 2004
    Assignee: Trident Emergency Products, LLC
    Inventor: Michael Sulmone
  • Patent number: 6672842
    Abstract: A hydraulic pump for use in a pump assembly of a railway track lubricating system includes a housing defining an intake chamber having an intake port, an outlet channel leading to an outlet port, a gear chamber containing interengaged gears, a discharge port having a discharge port, a window opening between the gear chamber and the discharge chamber, and a double head piston having a first head in the intake chamber, a second head in the discharge chamber, and a spring for biasing the piston to a first position where the first head is spaced a maximum from a wall between the intake chamber and the discharge chamber. The outlet port has a smaller cross section than the outlet channel so that checked charged deliveries of hydraulic fluid into the intake chamber will cause the piston to move from its first position to a second position and force grease out of the discharge chamber through the discharge port.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: January 6, 2004
    Assignee: Applied Technology Manufacturing Corporation
    Inventors: Peter C. Lounsberry, Devin W. Brown
  • Patent number: 6585493
    Abstract: A hygienic, self-priming centrifugal pump (1) with a pump housing (4) provided with an inlet opening (2) and a pressure connecting piece (3), where an impeller wheel (7) can rotate inside said pump housing. The inlet opening (2) is connected with a liquid ring pump section (9) comprising an auxiliary housing (10) and a pump screw (11). The pump screw (11) is mounted on and in extension of the hub (7a) of the impeller wheel. A recycling pipe (15) for pump liquid connects the pressure connecting piece (3) of the centrifugal pump and the auxiliary housing (10) of the liquid ring pump section (9), optionally the inlet nozzle (16) or the inlet pipe (18) of the latter. All the surfaces in the pump housing (4) and the auxiliary housing (10) in direct contact with liquid should be smooth and rounded and without holes, crevices, beads or burrs.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: July 1, 2003
    Assignee: APV Fluid Handling Horsens A/S
    Inventor: Michael Sutton
  • Patent number: 6475178
    Abstract: A pump used to infuse a medical liquid into a patient is autoprimed under the control of a microprocessor that monitors and adjusts a priming sequence to minimize the accumulation of small air bubbles within a pumping chamber of the cassette. Small air bubbles can be created by the agitation of liquid and air within the cassette during priming, and as a result of changing pressure conditions within the cassette. Adherence of the air bubbles on the walls of the pumping chamber can negatively affect performance of the pump. The microprocessor controls the flow of liquid into the pump cassette from a liquid supply to establish a layer of liquid at the bottom of the air trap, thereby preventing air bubbles within the air trap from moving into the pumping chamber. The layer of liquid acts as a one-way valve, allowing air to rise up from the pumping chamber and pass through the liquid layer into the air trap, but preventing air from passing through the liquid layer and down into the pumping chamber.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: November 5, 2002
    Assignee: Abbott Laboratories
    Inventors: David J. Krajewski, Thomas D. Canup
  • Patent number: 6393839
    Abstract: Pressurized medium delivery device with a pump, a suction pipe, at least one pressure pipe and a pressurized medium supply volume in a pressurized medium supply container.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: May 28, 2002
    Assignee: LuK Fahrzeug-Hydraulik GmbH & Co. KG
    Inventor: Ivo Agner
  • Publication number: 20020034446
    Abstract: A hygienic, self-priming centrifugal pump (1) with a pump housing (4) provided with an inlet opening (2) and a pressure connecting piece (3), where an impeller wheel (7) can rotate inside said pump housing. The inlet opening (2) is connected with a liquid ring pump section (9) comprising an auxiliary housing (10) and a pump screw (11). The pump screw (11) is mounted on and in extension of the hub (7a) of the impeller wheel. A recycling pipe (15) for pump liquid connects the pressure connecting piece (3) of the centrifugal pump and the auxiliary housing (10) of the liquid ring pump section (9), optionally the inlet nozzle (16) or the inlet pipe (18) of the latter. All the surfaces in the pump housing (4) and the auxiliary housing (10) in direct contact with liquid should be smooth and rounded and without holes, crevices, beads or burrs.
    Type: Application
    Filed: September 20, 2001
    Publication date: March 21, 2002
    Applicant: APV FLUID HANDLING HORSENS A/S
    Inventor: Michael Sutton
  • Publication number: 20010041140
    Abstract: A pumping system is disclosed that includes a vacuum source. The pumping system includes a motor coupled to a centrifugal pump and a separator defining a reservoir in fluid communication with an inlet of the centrifugal pump. A water liquid ring vacuum pump having an inlet is provided in fluid communication with the reservoir of the separator. Accordingly, the vacuum pump may provide the required vacuum to prime the pump. To backflush that pumping system, the pumping system may include a first valve provided between the discharge port of the vacuum pump and the reservoir of the separator. A second valve may be provided between the reservoir of the separator and the inlet of the water liquid ring vacuum pump. During normal operation, the first valve fluidly connects the discharge of the vacuum pump to the atmosphere and the second valve fluidly connects the inlet of the vacuum pump to the reservoir of the separator.
    Type: Application
    Filed: July 17, 2001
    Publication date: November 15, 2001
    Inventors: David Muhs, Gianfranco Parma
  • Patent number: 6315524
    Abstract: A pumping system is disclosed that includes a vacuum source. The pumping system includes a motor coupled to a centrifugal pump and a separator defining a reservoir in fluid communication with an inlet of the centrifugal pump. A water liquid ring vacuum pump having an inlet is provided in fluid communication with the reservoir of the separator. Accordingly, the vacuum pump may provide the required vacuum to prime the pump. To backflush that pumping system, the pumping system may include a first valve provided between the discharge port of the vacuum pump and the reservoir of the separator. A second valve may be provided between the reservoir of the separator and the inlet of the water liquid ring vacuum pump. During normal operation, the first valve fluidly connects the discharge of the vacuum pump to the atmosphere and the second valve fluidly connects the inlet of the vacuum pump to the reservoir of the separator.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: November 13, 2001
    Inventors: David Muhs, Gianfranco Parma
  • Patent number: 6187179
    Abstract: An outside filter for an aquarium has a housing having an inner chamber, a removable cover for closing the inner chamber of the housing, a supply conduit for supplying water to be filtered into the inner chamber of the housing, a withdrawal conduit for withdrawing the water from the inner chamber of the housing, a motor-operated pump for withdrawing the filtered water, a device for producing a vacuum for aspirating water with air which is contained in the supply conduit during a displacement, the inner chamber of the housing together with the discharge conduit forming a system which communicates with the supply conduit and during the production of the vacuum is hermetically sealingly closed from outside and serves as an evacuatable pressure chamber, the device for producing the vacuum inside the system which is closed.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: February 13, 2001
    Assignee: Eheim GmbH & Co. KG
    Inventors: Ferdinand Mayer, Walter Wiedenmann
  • Patent number: 6186746
    Abstract: A fuel delivery pump for a fuel injection pump for internal combustion engines, including a pair of gears that mesh with each other and are driven to rotate in a pump chamber. The pair of gears deliver fuel from an intake chamber connected to a storage tank, along a supply conduit that is formed between the end face of the gears and the circumference wall of the pump chamber, into a pressure chamber connected to the fuel injection pump. A conduit is provided that connects the intake chamber to the pressure chamber. The conduit can be connected to a ventilation device, and that upstream and downstream of the ventilation device, a pressure valve is provided for a directed fuel flow in the conduit.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: February 13, 2001
    Assignee: Robert Bosch GmbH
    Inventors: Stanislaw Bodzak, Hanspeter Mayer