Plural Pumping Members; One Additionally Supplying Motive Fluid For Second Patents (Class 417/382)
  • Publication number: 20150118078
    Abstract: A diaphragm pump includes a diaphragm cartridge assembly. The diaphragm cartridge is a self-contained unit having a diaphragm defining a pumped fluid side and a hydraulic fluid side and a seat receiving the hydraulic fluid side of the diaphragm and having a center opening. A biasing rod mounts to the diaphragm on the hydraulic fluid side and extending through the opening of the seat. A valve guide at an extended end of the biasing rod and a valve spool slidably mounts on the valve guide. A biasing element engages the seat and the valve guide. The pump may also include valve cartridges including a combined inlet check valve and discharge check valve.
    Type: Application
    Filed: October 31, 2014
    Publication date: April 30, 2015
    Inventor: Richard D. Hembree
  • Patent number: 8876495
    Abstract: Example fluid circuits (e.g., within aircrafts) include first and second pump assemblies. The first pump assembly has an electric motor and a first fluid pump. The first fluid pump is coupled to the electric motor and has a case drain port that is in fluid communication with a case drain region of the first fluid pump. The second pump assembly is powered by hydraulic pressure from the first fluid outlet of the first fluid pump and functions to augment flow through the case drain region of the first fluid pump.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: November 4, 2014
    Assignee: Eaton Corporation
    Inventors: Phillip Wayne Galloway, Jeffrey David Skinner, Kelly Dale Valtr
  • Patent number: 8496449
    Abstract: A rotary air motor driven hydraulic pump has separate pressure and return actuators and first and second stage eccentric driven pistons 180 degrees out of phase and driven by the motor through a gear reduction unit. The pressure and return actuators are on/off/proportional valves and the pump has two pressure relief valves with one adjustable from outside of the pump for a user to set a pressure limit of the pump. Above a certain output pressure limit, a bypass valve shunts flow in excess of that needed to precharge the second stage compression chamber from the first stage piston to an elastic reservoir from which the hydraulic fluid pumped by the pump is drawn. To make the pump stall at a certain output pressure, a pressure limiting valve can be used that cuts off the air supply to the pump at the desired output pressure.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: July 30, 2013
    Assignee: Actuant Corporation
    Inventors: Bruce E. Knuth, Kay Lap Gilbert Chan, Theo H. H. Den Ridder, Frantz D. Stanford, Roger R. Pili
  • Patent number: 8341955
    Abstract: A pumping system is provided which is a mobile, vehicle-mounted pumping system, such as for water or fuels, which mounts on a vehicle and may be used for various applications. The pumping system operates a drive system and control system for liquid pumps almost exclusively by hydraulic fluid pressure.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: January 1, 2013
    Inventors: Daniel R. Brantley, Ivars R. Bergs, Jeffrey J. Sietsema, Michael J. Brennan
  • Publication number: 20120141306
    Abstract: A pump having a disposable fluid contacting portion which defines a fluid inlet and outlet and a fluid path there between is presented. The pump includes a drive portion configured to engage the disposable portion to cause fluid to be moved from the fluid inlet to the fluid outlet. The disposable portion is configured to be selectively coupled to the drive portion. The disposable portion includes a driven membrane which forms a portion of the fluid path, and the drive portion includes a drive membrane. The two membranes are vacuum coupled to each other, whereby movement of the drive membrane causes the driven membrane to move, causing fluid to be pumped through the disposable portion. The pump has particular utility in the medical field for moving fluid from a source to a patient. The pump may include features such as an air-trap, bubble detection, fluid flow controls, and pressure detection.
    Type: Application
    Filed: November 29, 2011
    Publication date: June 7, 2012
    Applicant: CareFusion 303, Inc.
    Inventor: Robert D. Butterfield
  • Patent number: 8087906
    Abstract: A pump having a disposable fluid contacting portion which defines a fluid inlet and outlet and a fluid path there between. The pump includes a drive portion configured to engage the disposable portion to cause fluid to be moved from the fluid inlet to the fluid outlet. The disposable portion is configured to be selectively coupled to the drive portion. The disposable portion includes a driven membrane which forms a portion of the fluid path, and the drive portion includes a drive membrane. The two membranes are vacuum coupled to each other, whereby movement of the drive membrane causes the driven membrane to move, causing fluid to be pumped through the disposable portion. The pump has particular utility in the medical field for moving fluid from a source to a patient. The pump may include features such as an air-trap, bubble detection, fluid flow controls, and pressure detection.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: January 3, 2012
    Assignee: CareFusion 303, Inc.
    Inventor: Robert D. Butterfield
  • Patent number: 7766079
    Abstract: A pumping installation for a gas producing well. A gas compressor is positioned on surface which receives gas. The compressor is powered by hydraulic fluid. An engine is positioned a sufficient distance from the gas producing well as not to pose a danger of gas explosion. A hydraulic reservoir is provided. Hydraulic fluid is circulated by the engine to supply hydraulic fluid from the hydraulic reservoir needed to power the compressor.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: August 3, 2010
    Assignee: Global Energy Services Ltd.
    Inventor: Clayton Hoffarth
  • Publication number: 20090126696
    Abstract: A pump is provided for pumping two or more different fluids. The pump comprises a body having a longitudinal bore and at least first and second inlets selectively communicating with and providing passage to the bore via non-return valves. A plunger is mounted for reciprocation within the bore and at least one piston is also mounted for reciprocation within the bore so as to permit at least one type of fluid to pass into the bore through one or both inlets.
    Type: Application
    Filed: November 5, 2008
    Publication date: May 21, 2009
    Inventor: Michael Peter Cooke
  • Patent number: 7527483
    Abstract: An expansible chamber pneumatic system, for example a fluid pump system, includes two or more double-acting diaphragm pumps, each with symmetrical left and right pump housings, each housing including an air chamber and a fluid chamber separated by a movable diaphragm. The diaphragms are connected for reciprocating movement in unison to pump fluid through their respective fluid chambers. Each pump includes an air valve actuated by Control air to direct Process air into one of the air chambers, simultaneously releasing used Process air from the other air chamber to thereby move the diaphragms, thereby to pump fluid. A pilot valve directs Control air to the air valve to position the air valve. The pilot valve is responsive to diaphragms reaching their travel limit in one direction to direct Control air to reverse the directions of Process air flow through the air valve to thereby reverse the movement of the pump diaphragms. Control air exhausts through the pilot valve to atmosphere.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: May 5, 2009
    Inventor: Carl J Glauber
  • Publication number: 20090016909
    Abstract: A pump for use in handling one or more different process fluids includes a plurality of pumping chambers having a process fluid inlet and a process fluid outlet, process fluid outlet coupled to a process fluid valve on each pumping chamber for selectively preventing and allowing the flow of process fluid through the pumping chamber, an actuation mechanism for pumping actuating fluid to a plurality of actuating fluid chambers in fluid communication with the actuating fluid chambers to permit flow into each actuating fluid chamber of actuating fluid, and at least one diaphragm separating each pumping chamber from an associated actuating fluid chamber, for separating process fluid from actuating fluid. Operation of the actuation mechanism displaces actuating fluid and causes actuating fluid to flow only into each of the actuating fluid chambers having an opened process fluid valve, resulting in pumping.
    Type: Application
    Filed: November 12, 2007
    Publication date: January 15, 2009
    Applicant: INTEGRATED DESIGNS L.P.
    Inventors: Raymond T. Savard, Greg Gray
  • Publication number: 20090000680
    Abstract: A blending pump assembly for accurately maintaining the proper ratio of two fluid components. Flow of a first fluid is utilized to drive a fluid motor, which in turn drives a pumping mechanism to inject a proportional amount of a second fluid into the flow of the first fluid. The fluid motor and pump are sized so that a predetermined ratio between the two fluids is maintained regardless of changes in pressure and flow rate of such first fluid.
    Type: Application
    Filed: July 29, 2008
    Publication date: January 1, 2009
    Applicant: International Dispensing Corporation
    Inventor: Mitchell A. Friedman
  • Patent number: 6981850
    Abstract: A cryogenic stream is pumped by a cryopump and then vaporized in a vaporizer to produce the pressurized vapor stream. The cryopump is driven by a transmission that is in turn driven by a hydraulic fluid. The hydraulic fluid flows within a hydraulic fluid circuit having first and second hydraulic fluid flow paths. The first of the flow paths is used to drive the hydraulic transmission. The second of the flow paths is dedicated to raising heat. Hydraulic fluid is circulated within the flow path by hydraulic fluid pumps and the amount of heat generated is controlled by adjustable back pressure valves. The adjustable back pressure valves in both fluid flow paths can be adjusted to control the degree to which heat is added to the vaporizer and therefore the pressurized vapor stream. The hydraulic fluid pumps can be driven by diesel engines. Heat may also be recovered from the diesel engines and gear oil used in pumps and the cryopump to also help vaporize the pressurized liquid stream.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: January 3, 2006
    Assignees: Praxair Technology, Inc., Halliburton Energy Services, Inc.
    Inventors: Brian Norman Maltbie, Norman Henry White
  • Patent number: 6824364
    Abstract: A master/slave pump assembly employs a dual diaphragm pump as the master pump. An abrasive fluid, such as a resin containing abrasive particles, can be pumped by the dual diaphragm pump without the damage that would result from exposure of seals to the abrasive fluid. The slave pump, which can pump a catalyst or other secondary fluid, is driven in response to movement of the diaphragms and the shaft connecting the two diaphragms. A force or a signal dependent upon the actual mass flow rate of the primary fluid, can be communicated hydraulically or electrically to the slave pump, regardless of viscosity or environmental factors. An adjustable linkage is employed to alter the ratio of the mass flow rates of the two fluids.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: November 30, 2004
    Assignee: Rimcraft Technologies, Inc.
    Inventors: Timothy P. Ross, Robbie L. Cecil
  • Publication number: 20020076336
    Abstract: A centrifugal compressor assembly, especially one having two or more stages, comprises a first compressor casing having. A fluid inlet and a fluid outlet and a first impeller rotatable within the first compressor casing. The assembly further comprises a second compressor casing having a fluid inlet and a fluid outlet and a second impeller rotatable within the second compressor casing. Drive for the compressors is provided by an electric motor, preferably a permanent magnet motor, disposed between the first and second compressor casings and comprising a stator and a rotor rotatable within the stator. A drive shaft is provided, wherein the first impeller, second impeller and the rotor are mounted on the drive shaft and rotatable therewith.
    Type: Application
    Filed: December 15, 2000
    Publication date: June 20, 2002
    Inventors: Gerald K. Mruk, Peter J. Weber, Edward S. Czechowski
  • Patent number: 4730990
    Abstract: A pulse combustion powered apparatus is disclosed for temperature conditioning and pressurizing fluids. The alternating periods of positive and negative pressure of the combustion gases of a pulse combustion burner drive a reciprocating compressor and the rejected engine heat is recovered by heat exchange with a primary fluid. The compressor may be included in a reversible refrigeration circuit to provide heating and cooling of secondary fluids.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: March 15, 1988
    Assignee: American Gas Association
    Inventors: Richard J. Priem, M. Reza Ghassemzadeh, James C. Griffiths
  • Patent number: 4693227
    Abstract: A multi-fuel injection system for an internal combustion engine having first and second fuel injection pumps for delivering first and second fuels, respectively, wherein a fuel injection nozzle has two fuel inlet passages. The first pump has a plurality of fuel outlets for delivering the first fuel into respective fuel inlet passages of the nozzle, one by one. The second pump has a single outlet from which the second fuel is delivered simultaneously into second fuel inlet passages of all nozzles except that which is forced in operation by the first pump. The second fuel is thus filled several times during one cycle of the engine to establish an averaged charge between the cylinders.
    Type: Grant
    Filed: May 7, 1986
    Date of Patent: September 15, 1987
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yasuo Satou
  • Patent number: 4590904
    Abstract: A fuel injection apparatus having pre-injection and main injection and associated with Diesel engines is disclosed. A high-pressure injection pump delivers a main injection quantity to a main injection nozzle, and a hydraulic pre-injection auxiliary pump is driven by this same pressure pulse. The pre-injection auxiliary pump includes a stepped piston, comprising a pre-injection piston portion and a driving piston portion, and the stepped piston has as an integral component such as a slide pintle control valve located in an extension of its driving piston portion. This control valve opens the passage to the continuing pressure line and to the main injection nozzle only after a predetermined stroke of the stepped piston has been attained.
    Type: Grant
    Filed: July 27, 1984
    Date of Patent: May 27, 1986
    Assignee: Robert Bosch GmbH
    Inventor: Peter Wannenwetsch
  • Patent number: 4569640
    Abstract: A screw compressor discharges a fluid including a mixture of highly compressed gas and liquid into a separator reservoir, and a hydraulic motor is driven by at least a portion of the fluid. An injection conduit connects the bottom of the reservoir to a liquid injection port through the casing of the compressor. A pump driven by the hydraulic motor is mounted on the injection conduit. The motor-pump assembly is in a common casing. The injection port is in an area of the casing which is substantially subjected to high pressure.
    Type: Grant
    Filed: May 5, 1983
    Date of Patent: February 11, 1986
    Inventor: Bernard Zimmern
  • 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: 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