Alternate Series Or Parallel Operation Of Plural Pumps Patents (Class 417/62)
  • Patent number: 11892211
    Abstract: A climate-control system may include a first compressor, a second compressor, a suction manifold, and a flow restrictor. The first and second compressors each include a shell and a compression mechanism. The shells define suction chambers from which the compression mechanisms draw working fluid. The shells include suction inlet fittings through which working fluid is drawn into the suction chambers. The suction inlet fittings are fluidly connected to the suction manifold. The suction manifold provides suction-pressure working fluid to the suction inlet fittings of the first and second compressors. The flow restrictor may be at least partially disposed within the suction manifold.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: February 6, 2024
    Assignee: Copeland LP
    Inventors: Brandon Jerome Witt, Philip L. Landfair, Vishal Kumar Vaghela, Satyam Anandrao Shinde
  • Patent number: 11821442
    Abstract: A hydraulic energy handling system for a working machine includes a high-pressure side; a low-pressure side; a hydraulic machine for mechanically driving, and being mechanically driven by, a mechanical driveline of the working machine; at least one high-pressure hydraulic energy storage connected to the high-pressure side; a hydraulic motor; a hydraulic pump arranged to supply hydraulic fluid to an inlet side of the hydraulic motor; and a return line for conducting hydraulic fluid to a hydraulic tank. The system further includes a pressure relief valve between the high-pressure side and the return line and arranged to discharge excess hydraulic energy from the high-pressure side to the return line to provide a braking force on the mechanical driveline; and a priority valve arrangement connected to an outlet side of the hydraulic motor to direct a prioritized flow of hydraulic fluid to the low-pressure side.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: November 21, 2023
    Assignee: Volvo Construction Equipment AB
    Inventors: Karl Uebel, Robert Morelius, Erik Norlin
  • Patent number: 11118588
    Abstract: A pump system includes dual centrifugal pumps mounted on a fabricated skid. Both pumps are belt driven by one motor. The pumps are piped with three two-way valves and crossover piping configured such that the pumps can be operated in either series or parallel flow using a single inlet and outlet for the system.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: September 14, 2021
    Assignee: Cornell Pump Company
    Inventors: William Schlittler, James Garvin, Andrew Enterline
  • Patent number: 10982670
    Abstract: A gear pump that is used to pump fluid, such as oil, in a vehicle. The gear pump comprises a gear assembly having a drive shaft including a drive shaft key; a set of drive gears mounted on the drive shaft, with a drive gear of the set of drive gears being keyed with the drive shaft key; a driven shaft including a driven shaft key; a set of driven gears mounted on the driven shaft, with a driven gear of the driven gear set being keyed with the driven shaft key; and a torque drive feature associated with the drive shaft or the driven shaft, wherein the torque drive feature is configured to check keying with the driven shaft key.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: April 20, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mark R. Claywell, Sean M. McGowan
  • Patent number: 10328442
    Abstract: Various embodiments concern a sprayer having a blower that outputs a HVLP flow of air into a hose, the hose connecting with a spray gun. A pressure sensor measures pressure of the HVLP air within the hose via a tube that branches from a fitting to which the hose connects. If the sensor indicates that the pressure level has increased above a threshold amount, indicating that the trigger of the spray gun is not being actuated, then power output to the blower is reduced (e.g., stopped). HVLP air is trapped within the hose by two valves when the trigger is not actuated. When the sensor indicates that the pressure level has decreased, corresponding to release of the trapped HVLP air into the gun for spraying by actuation of the trigger, power to the blower is increased (e.g., resumed).
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: June 25, 2019
    Assignee: Graco Minnesota Inc.
    Inventors: John M. Svendsen, Diane L. Olson
  • Patent number: 10113548
    Abstract: A vacuum pump generates a vacuum, in a suction device, with an air intake device and an air exhaust device, as well as a motor for driving the vacuum pump. The air exhaust device is provided with a discharge valve. The exhaust air is downstream of the discharge valve divided into two partial flows that are respectively associated with a pipe section.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: October 30, 2018
    Assignee: Gebr. Becker GmbH
    Inventors: Michael Rapp, Denko Popovac, Rudolf Bahnen
  • Patent number: 9382906
    Abstract: A multi-stage reciprocating compressor includes a cylinder block and a cylinder head. The cylinder block defines a low stage cylinder and a high stage cylinder. The cylinder head is secured to the cylinder block overlying the low and high stage cylinders. The cylinder head defines a mid-stage plenum which is in fluid communication with the low stage cylinder and the high stage cylinder for communicating a working fluid discharged from the low stage cylinder to the high stage cylinder.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: July 5, 2016
    Assignee: CARRIER CORPORATION
    Inventor: Paul J. Flanigan
  • Patent number: 9157399
    Abstract: An adapter for retrofitting a fuel control system. The adapter has an outlet port and an inlet port for connecting to an external fuel system. The adapter replaces a standard fuel filter and fuel filter bowl.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: October 13, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Jeremy J. Walters, David L. Ripley
  • Publication number: 20150147193
    Abstract: In some aspects, a compressor system includes a compressor train including two or more compressors connected in series and a control mechanism. The control mechanism is controlled by a performance controller. The performance controller is operable to identify a process variable of the performance controller; receive, on a recurrent basis from a load sharing controller, a setpoint for the process variable of the performance controller; and control the control mechanism based on the setpoint and the process variable of the performance controller. The setpoint is determined dynamically during operation of the two or more compressors by the load sharing controller based on a load sharing parameter associated with the two or more compressors.
    Type: Application
    Filed: November 25, 2013
    Publication date: May 28, 2015
    Applicant: Woodward, Inc.
    Inventors: Walter Grassens, Brian Eldredge
  • Patent number: 9004877
    Abstract: A multi-stage diaphragm suction pump, includes at least two pump chambers, each having a inlet having at least one inlet valve, and a outlet having at least one outlet valve, and a suction line, which connects the fluid inlets of the pump chambers. Successive pump chambers are connected to one another by at least one connection line such that, when a differential pressure in the suction line is reached/exceeded, the diaphragm pump changes from parallel to an operating mode that is at least also serial. At least one check valve, which opens to a downstream pump stage, is interposed in each of the inflow and outflow regions of the at least one connection line. A suction-side opening or a pressure-side opening of the connection line is arranged in a region of the pump chamber on which a diaphragm associated with the pump chamber rolls first during a pump cycle.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: April 14, 2015
    Assignee: KNF Neuberger GmbH
    Inventors: Erich Becker, Erwin Hauser
  • Publication number: 20150059749
    Abstract: A pump unit 10 includes: a housing 13 provided with an inlet 11 and an outlet 12 for a fluid; and a pump group composed of micro pumps 15 arranged in the housing 13, for allowing a fluid entering through the inlet 11 to exit from the outlet 12. The pump group includes: the micro pump 15 positioned in the most upstream (m1); the micro pump 15 positioned in the most downstream (m4); and the micro pumps 15 positioned in the middle (m2 to m3). The housing 13 includes: an inlet direct-connecting flow passage 41 directly connecting a suction port 31A of the micro pump 15 positioned in the most upstream with the inlet 11; an outlet direct-connecting flow passage 42 directly connecting a discharge port 31B of the micro pump 15 positioned in the most downstream with the outlet 12; and a flow passage forming mechanism switchable between a state in which the micro pumps 15 are connected in series and a state in which the micro pumps 15 are connected in parallel.
    Type: Application
    Filed: April 1, 2013
    Publication date: March 5, 2015
    Applicant: Metran Co., Ltd.
    Inventor: Kazufuku Nitta
  • Patent number: 8951021
    Abstract: An example dual pump/dual bypass fuel pumping assembly may include a dual bypass valve including a first inlet port, a second inlet port, and a movable spool arranged to modulate fuel flow from the first inlet port to a first bypass port and a first discharge port and arranged to modulate fuel flow from the second inlet port to a second bypass port and a second discharge port based on a position of the movable spool; a first pump arranged to supply fuel to the first inlet port; a second pump arranged to supply fuel to the second inlet port; a supply header arranged to supply fuel to the first pump and the second pump; a bypass header fluidicly coupled to the first bypass port, the second bypass port, and the supply header; and/or a discharge header fluidicly coupled to the first discharge port and the second discharge port.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: February 10, 2015
    Assignee: General Electric Company
    Inventor: Walter Decania Hutto, Jr.
  • Patent number: 8931564
    Abstract: A method to extract oil for a pool of oil in the ground utilizes an interconnected series of rotating helical blades extending from the surface of the ground through a canted bore to the pool of oil. The blades can be staggered and interconnected with a gear arrangement that moves oil from pool to pool and up to the surface of the ground.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: January 13, 2015
    Inventor: Michael D. Anter
  • Patent number: 8905722
    Abstract: A compression device includes a plurality of compressors in a shell. Each compressor includes a rolling piston that rotates within a cylinder to compress refrigerant. At least one valve allows refrigerant to be simultaneously or successively compressed by the compressors. A first pipe transfers refrigerant into one of the compressors, and a second pipe transfers refrigerant compressed in one of the compressors to another one of the compressors when the refrigerant is successively compressed by the compression mechanisms. The first and second pipes are coupled to the cylinder of one of the compressors.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: December 9, 2014
    Assignee: LG Electronics Inc.
    Inventors: Yoonsung Choi, Minchul Yong, Yunhi Lee, Joonhong Park
  • Publication number: 20140286795
    Abstract: A gas control apparatus includes an upper housing to which a second piezoelectric pump is joined, a lower housing to which a first piezoelectric pump is joined, and a diaphragm. The upper housing includes a discharge hole through which gas is discharged. The lower housing includes introduction holes through which gas is introduced, an opening, a first valve seat, a second valve seat, and a third valve seat. The diaphragm is sandwiched between the upper housing and the lower housing, and is fixed to the upper housing and the lower housing so that the diaphragm contacts the first valve seat, the second valve seat, and the third valve seat. The diaphragm divides an inner space of the upper housing and the lower housing to define valve chests together with the upper housing and the lower housing.
    Type: Application
    Filed: June 5, 2014
    Publication date: September 25, 2014
    Inventors: Gaku KAMITANI, Atsuhiko HIRATA
  • Publication number: 20140271259
    Abstract: A method for coordinating operation between at least two groups of compressors in a cooling circuit is disclosed. A first group of compressors forms part of a low temperature (LT) part of the cooling circuit and a second group of compressors forms part of a high temperature (MT) part of the cooling circuit. Each of the compressor groups comprises one or more compressors, and each of the compressor groups comprises a controller, the controllers being capable of exchanging signals. In the case that the LT compressor group needs one or more of the LT compressors to start operation, it is investigated whether or not one or more of the MT compressors is/are operating. If this is the case, one or more of the LT compressors is/are allowed to start operation. If it is not the case, the suction pressure in the MT part of the cooling circuit is established, e.g.
    Type: Application
    Filed: October 5, 2012
    Publication date: September 18, 2014
    Inventor: Jan Prins
  • Patent number: 8807960
    Abstract: A method of servicing a wellbore, comprising establishing a pumping profile having a performance plan, operating a first pump according to a first pumping parameter value, and operating a second pump according to the second pumping parameter value, wherein the second pumping parameter value is selected relative to the first pumping parameter value to improve a conformance of a phase sensitive combined pump effect operational characteristic to the performance plan. A wellbore servicing system, comprising a pump group comprising a plurality of plungers wherein at least some of the plurality of plungers are substantially configured according to an equal phase angle distribution arrangement.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: August 19, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Stanley V. Stephenson, David M. Stribling, Chad Heitman
  • Publication number: 20140127037
    Abstract: A fluid supply apparatus which supplies a fluid to a medical apparatus includes: a pump mechanism including a first pump capable of carrying out a intake operation of a fluid and a feeding operation of the fluid, and a second pump capable of alternately carrying out a intake operation of the fluid and a feeding operation of the fluid; a flow passage which includes an elastic member and which communicates with the pumps and supplies the fluid to the medical apparatus; a pressure fluctuation detecting unit capable of detecting fluctuation in internal pressure in the flow passage; and a flow passage deforming unit which deforms the flow passage according to the fluctuation in the internal pressure.
    Type: Application
    Filed: November 5, 2013
    Publication date: May 8, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kazuaki UCHIDA, Takeshi SETO, Takahiro MATSUZAKI, Atsuya HIRABAYASHI
  • Publication number: 20140094727
    Abstract: A compression device includes a compression garment positionable on the limb of the wearer and having an inflatable bladder for providing compression treatment to the limb. A pump assembly is supported by the compression garment. The pump assembly is in fluid communication with the bladder for pressurized fluid delivery. The pump assembly includes at least first and second pumps. Passaging connects each of the first and second pumps for fluid communication with the inflatable bladder.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Applicant: COVIDIEN LP
    Inventor: Covidien LP
  • Publication number: 20140056725
    Abstract: A refrigeration system with two or more compressors configured to compress a flow of refrigerant with oil entrained therein. A suction flow piping arrangement is configured to supply a flow of refrigerant and oil to the two or more compressors. The suction flow piping arrangement has a suction header configured to carry the flow of refrigerant and oil, and a primary compressor supply conduit connected to the suction header. The primary compressor supply conduit supplies refrigerant and oil to a first compressor of the two or more compressors. A secondary compressor supply conduit branches off from the suction header. The secondary compressor supply conduit supplies refrigerant to a second compressor of the two or more compressors. The primary compressor supply conduit is configured to supply more oil to the first compressor than the secondary compressor supply conduit supplies to the second compressor.
    Type: Application
    Filed: July 1, 2013
    Publication date: February 27, 2014
    Applicant: BITZER KUEHLMASCHINENBAU GMBH
    Inventors: Bruce A. Fraser, Ronald J. Duppert, Wayne P. Beagle
  • Patent number: 8628304
    Abstract: A multi-stage membrane suction pump having at least two pump chambers, each having a fluid inlet and a fluid outlet, and having a suction line connecting the fluid inlets. Successive pump chambers are connected via at least one connecting line such that the membrane pump upon reaching/exceeding a differential pressure in the suction line changes from a parallel operation into at least also a serial operation. In the inflow and outflow regions of the at least one connecting line, at least one check valve each is interposed, opening toward the subsequent pump stage. The check valves provided in the connecting line(s) are designed smaller compared to inlet and outlet valves of the pump chambers, and line sections of the connecting lines that open toward the neighboring pump chamber have a smaller clear line cross-section compared to the inlet and outlet valves, and are associated with the check valves.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: January 14, 2014
    Assignee: KNF Neuberger GmbH
    Inventors: Erich Becker, Erwin Hauser
  • Publication number: 20130333564
    Abstract: Systems and methods for producing a product gas are provided. In one embodiment, a plurality of gas separation assemblies separate adsorbable components from a gas source using a plurality of micro-pumps to create gas flow through the gas separation assemblies. Various embodiments include implementation of various pressure swing adsorbtion (PSA), vacuum swing adsorbtion (VSA), and vacuum pressure swing adsorbtion (VPSA) systems utilizing the gas separation assemblies with micro-pumps. In other embodiments, micro-pumps and micro-pump assemblies are arranged in various configurations capable of providing a range of pressures and flow rates.
    Type: Application
    Filed: March 8, 2013
    Publication date: December 19, 2013
    Applicant: Invacare Corporation
    Inventors: Samuel J. Shelnutt, William J. Daniels
  • Publication number: 20130330210
    Abstract: The compression device according to the invention includes first and second compressors mounted in parallel and an oil level equalization line arranged to fluidly connect the oil sumps of the first and second compressors. The oil level equalization line includes at least one oil level regulating portion positioned near one of the first and second compressors and including a dam wall extending transversely to the longitudinal direction of said oil level regulating portion and a flow opening arranged such that, when the oil level in the oil sump of the compressor situated near the oil level regulating portion extends above the upper level of the dam wall, oil flows through the flow opening toward the other compressor.
    Type: Application
    Filed: June 12, 2013
    Publication date: December 12, 2013
    Inventors: Patrice BONNEFOI, Kongkham LO VAN, Alexandre LANDRE, David GENEVOIS
  • Publication number: 20130330211
    Abstract: A direct drive pump employs an on-off tool to attach the drive rod string to a floating pump drive shaft in both torsion and tension. The downward thrust on the drive shaft, as well as the weight of the drive rod string, is born by a thrust bearing in the drivehead at the surface. A floater pump is used with this direct drive pump to permit the free vertical movement of the drive shaft. When a tandem direct drive pump is employed a housing containing a tandem pump drive shaft connector connects the shafts in an upper and lower tandem pump to permit the two to freely move in the tandem direct drive pump.
    Type: Application
    Filed: August 15, 2013
    Publication date: December 12, 2013
    Applicant: Harrier Technologies, Inc.
    Inventor: William Bruce Morrow
  • Publication number: 20130320147
    Abstract: A pumping apparatus includes a gear pump in fluid communication with a boost pump. The gear pump includes a pump housing, a first gear, and a second gear. The first and second gear have gear teeth and trunnions on opposite sides thereof, and are disposed in the pump housing. The gear teeth of the first and second gear are meshed in a mesh region. An inlet cavity is defined adjacent to the first and second gear, on one side of the mesh region. A pump outlet is defined on an opposite side of the mesh region from the inlet cavity. A bearing is configured to support at least one trunnion of the first gear and/or the second gear. A bearing interface is defined between the bearing and the at least one trunnion. A flow path is defined between the bearing interface and the inlet cavity.
    Type: Application
    Filed: June 4, 2012
    Publication date: December 5, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Steven Alan Lewis, David Lawrence
  • Publication number: 20130177452
    Abstract: A multi-pressure compressor that includes a roll-cage frame, first and second compressor assemblies mounted in the roll-cage frame, a tank coupler, which is in fluid communication with the second compressor and is configured to be coupled to an auxiliary tank that is rated for an internal pressure in excess of 2500 psi, a bracket that is coupled to the roll-cage frame and configured to receive the auxiliary tank therein, and at least one controller for operating the first and second compressor assemblies.
    Type: Application
    Filed: December 20, 2012
    Publication date: July 11, 2013
    Applicant: STANLEY FASTENING SYSTEMS, L.P.
    Inventor: Stanley Fastening Systems, L.P.
  • Publication number: 20130164149
    Abstract: An energy saving three pump waste water pump station design that eliminates the high energy usage of traditional waste water pump stations, reduces maintenance costs to the pumps and increases the useful lives of the pumps by having a primary pump running continuously, a second pump mining during high demand periods and a third pump functioning primarily as a back up pump. Unlike conventional pump-station designs, the Energy Saving Green Pump Station Design utilizes a single float switch panel. Whereas independent float switches trigger start-stops in conventional pump station designs, the Green design incorporates a remote controllable panel for rotating the primary, secondary and third pumps on a schedule. This design also provides a process for determining in-flow rates for a pump station and efficiency operating points of pumps so that the most efficient pumps with the lowest horsepower can be selected.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 27, 2013
    Inventor: Nasser Fred Mehr
  • Publication number: 20130064687
    Abstract: A compressor apparatus having a first compressor head for generating a first gas flow and a second compressor head for generating a second gas flow with a shuttling by-pass component in fluid flow communication between the first and second compressor heads for allowing the output of a portion of either the first gas flow or the second gas flow to be diverted to the other compressor head. The shuttling by-pass component allows a portion of the first gas flow to be diverted from the first compressor head to the second compressor head during an exhaust stroke of the first compressor head, while also allowing a portion of the second gas flow to be diverted from the second compressor head to the first compressor head during an exhaust stroke of the second compressor head in alternating sequence such that a more steady output of gas flow may be attained.
    Type: Application
    Filed: September 9, 2011
    Publication date: March 14, 2013
    Applicant: ALLIED HEALTHCARE PRODUCTS INC.
    Inventors: Kevin Kroupa, Stephen Palmer
  • Patent number: 8382457
    Abstract: A technique is provided for pumping fluid in subsea applications. A self-contained pumping module is created by mounting a pumping unit on a skid that can be lowered to a sea floor. The skid comprises a support structure designed to hold the pumping unit in a desired orientation, such as an inclined orientation with respect to a base of the skid. The self-contained nature of the pumping module facilitates deployment to a sea floor/retrieval from the sea floor to enable use of the pumping module in a variety of subsea applications with reduced complexity and cost.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: February 26, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Steven Wilson, Leonel Ruiz Contreras, Kevin T. Scarsdale
  • Patent number: 8376983
    Abstract: Irrigation fluid is aspirated from an eye and through an aspiration instrument by operating a vacuum pump, including moving first and second plungers between respective suction strokes and discharge strokes. Vacuum pressure at an input side of the pump is maintained at a desired vacuum pressure setting by controlling speeds and directions of the plungers, and controlling positions of input and output valves communicating with cylinders in which the plungers move. Controlling is based on the pressure setting and measured pressures in the cylinders. Vacuum pressure is maintained while transitioning from the suction stroke of the first plunger to the suction stroke of the second plunger, by synchronizing respective positions of the plungers and the valves, such that initiation of the suction stroke of the second plunger during the transitioning is delayed until a vacuum pressure in the second cylinder is equal to a vacuum pressure in the first cylinder.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: February 19, 2013
    Assignee: Enlighten Technologies, Inc.
    Inventors: Rodney L. Ross, Gregg Hughes
  • Patent number: 8371181
    Abstract: A continuous flow syringe pump includes a first syringe configured for at least one of loading or dispensing at least one fluid, a second syringe configured for at least one of loading or dispensing the at least one fluid, and a first valve connected to the first syringe and the second syringe. The continuous flow syringe pump also includes a second valve connected to the first valve. The continuous flow syringe pump further includes at least one outlet connected to the first valve. The at least one outlet is configured to alternate output of the at least one fluid between the first syringe and the second syringe in a substantially continuous operation.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: February 12, 2013
    Assignee: Elemental Scientific, Inc.
    Inventor: Daniel R. Wiederin
  • Publication number: 20120308405
    Abstract: A modular liquid pump operable as a liquid pump when used by itself and as a foam pump when combined with a modular air pump is disclosed herein. In one embodiment, the modular liquid pump includes a housing for forming a least a portion of a liquid pump chamber; an inlet valve for allowing liquid into the liquid pump chamber; an outlet valve for allowing liquid out of the liquid pump chamber; and an attachment mechanism configured to secure the liquid pump housing to a modular air pump. The modular liquid pump operates alone to output a liquid or operates in combination with an air pump to output a foam. One embodiment includes a modular air pump configured to be secured to the modular liquid pump. In such a combination, the modular liquid pump and the air pump operate together to output a foam.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 6, 2012
    Applicant: GOJO INDUSTRIES, INC.
    Inventors: John J. McNulty, Nick E. Ciavarella, Todd A. Spiegelberg, Robert L. Quinlan
  • Publication number: 20120257988
    Abstract: An apparatus for mixing and pumping manure slurry from a manure pit comprises a pump unit having first and second mixing rotors and a pumping rotor. In operation, the first mixing rotor draws solids downwardly towards the pump unit while the second mixing rotor redirect a portion of the solids drawn by the first mixing rotor away from the pump unit, thereby allowing to control the ration of solid contents in the slurry pumped by the pumping rotor. A non-diverted flow distribution arrangement is also provided for selectively connecting the pump outlet in straight-through flow connection with either a drainage pipe or a re-circulation pipe.
    Type: Application
    Filed: April 8, 2011
    Publication date: October 11, 2012
    Inventor: Marcel DEPAULT
  • Patent number: 8231357
    Abstract: A high-pressure compressor (1) for compressing gases, which has at least two working spaces (3, 3?) and is optionally adjustable between a single-stage operating position, in which the gas to be compressed is compressed in one single stage, and a multi-stage operating position, in which at least one working space (3?) is connected in series with at least one further working space (3), wherein at least three working spaces (3, 3?) are provided which all have the same working volume.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: July 31, 2012
    Assignee: Leobersdorfer Maschinenfabrik AG
    Inventors: Ernst Huttar, Günther Ognar
  • Patent number: 8206134
    Abstract: A power pack unit includes a first hydraulic pump including a first pump enclosure accommodating a first pump cartridge. A second hydraulic pump includes a second pump enclosure accommodating a second pump cartridge. A hydraulic fluid reservoir is positioned between the first and second hydraulic pumps. A first end of the reservoir is secured to the first pump enclosure and a second end of the reservoir is secured to the second pump enclosure. The first and second hydraulic pumps and the reservoir can extend along a common axis. First and second motors can be connected to the first and second pumps. The entire structure can extend along a common axis.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: June 26, 2012
    Assignee: Maradyne Corporation
    Inventors: Ion Moldovan, Paul Ellsworth
  • Patent number: 8152478
    Abstract: A double cylinder compressor with controlled capacity having a capacity switch device, and a reservoir having an inlet and two outlets which are connected with an upper and a lower cylinder of the double cylinder compressor through the capacity switch device. The capacity switch device being switched to realize the connection in series or in parallel for the cylinders of the double cylinder compressor, as a result, the discharge capacity of the compressor is that of the second stage cylinder when the connection in series, or the sum of the two cylinders when the connection is in parallel.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: April 10, 2012
    Assignee: Shanghai Hitachi Electrical Appliances Co., Ltd.
    Inventors: Yi Zhou, Yabing Tang, Liang Xu, Chunhui Liu
  • Patent number: 8136549
    Abstract: A sluice system for a vacuum coating facility for coating substrates that can be moved through the vacuum coating in a direction of conveyance comprises a prevacuum slice chamber and a transfer chamber adjoining a coating chamber, wherein a fine vacuum can be regulated before the transfer chamber on the input side in the direction of conveyance and after the transfer device on the output side in the direction of conveyance. The prevacuum sluice chamber is directly adjacent to the transfer chamber and the fine vacuum can be regulated in the prevacuum sluice chamber. A high-vacuum pump system can also alternatively and selectively be connected to the prevacuum sluice chamber.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: March 20, 2012
    Assignee: Von Ardenne Anlagentechnik GmbH
    Inventors: Olaf Gawer, Jens Melcher, Dietmar Schulze, Hans-Christian Hecht
  • Patent number: 8083493
    Abstract: For water-jet surgery pump devices are known by means of which a sterile fluid is transported through a reservoir to the surgical instrument by means of piston pumps or similar volumetrically transporting pumps. In accordance with the present invention it is proposed either to construct drive means for the pumps in such a way that their suction cycle is shorter than the output cycle, or to provide a pump with at least three pump chambers and to construct the drive means in such a way that the suction and output cycles of the pump chambers overlap one another.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: December 27, 2011
    Assignee: ERBE Elektromedizin GmbH
    Inventors: Martin Hagg, Ralf Kuhner
  • Patent number: 8083501
    Abstract: A technique is provided for pumping fluid in subsea applications, such as booster pumping applications. A self-contained pumping module has a pump and a motor mounted on a skid. The self-contained pumping module also includes electrical connections by which electrical power can be provided to the motor and hydraulic connections for connecting suitable hydraulic lines with a pump intake and a pump discharge. The self-contained nature of the pumping module enables easy deployment to a sea floor in a variety of applications.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: December 27, 2011
    Assignee: Schlumberger Technology Corporation
    Inventor: Kevin T. Scarsdale
  • Publication number: 20110146389
    Abstract: A continuous flow syringe pump includes a first syringe configured for at least one of loading or dispensing at least one fluid, a second syringe configured for at least one of loading or dispensing the at least one fluid, and a first valve connected to the first syringe and the second syringe. The continuous flow syringe pump also includes a second valve connected to the first valve. The continuous flow syringe pump further includes at least one outlet connected to the first valve. The at least one outlet is configured to alternate output of the at least one fluid between the first syringe and the second syringe in a substantially continuous operation.
    Type: Application
    Filed: December 21, 2009
    Publication date: June 23, 2011
    Inventor: Daniel R. Wiederin
  • Patent number: 7948603
    Abstract: The exposure apparatus 100 comprises a double shell structure which has an upper vacuum chamber 140 on the outside of the reticle chamber 135, and a lower vacuum chamber 160 on the outside of the wafer chamber 155. A cryo pump CP and a turbo molecular pump TMP/dry pump DP are connected in parallel to each of the chambers, i.e., the reticle chamber 135 and wafer chamber 155. During exposure operation and alignment of the exposure apparatus 100, only the cryo pump CP (vibration-free type vacuum pump) is operated; the turbo molecular pump TMP/dry pump DP (vibrating type vacuum pump) is stopped. As a result, it is possible to cut off the transmission of vibration from the vibrating type vacuum pump during exposure operation and alignment of the exposure apparatus, so that the precision of the stage devices 137 and 157 can be ensured to a much greater degree; accordingly, deterioration of the exposure performance can be reduced to a much greater extent.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: May 24, 2011
    Assignee: Nikon Corporation
    Inventor: Keiichi Tanaka
  • Publication number: 20100310384
    Abstract: A method of servicing a wellbore, comprising establishing a pumping profile having a performance plan, operating a first pump according to a first pumping parameter value, and operating a second pump according to the second pumping parameter value, wherein the second pumping parameter value is selected relative to the first pumping parameter value to improve a conformance of a phase sensitive combined pump effect operational characteristic to the performance plan. A wellbore servicing system, comprising a pump group comprising a plurality of plungers wherein at least some of the plurality of plungers are substantially configured according to an equal phase angle distribution arrangement.
    Type: Application
    Filed: June 9, 2009
    Publication date: December 9, 2010
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Stanley V. Stephenson, David M. Stribling, Chad Heitman
  • Patent number: 7837447
    Abstract: A chemistry analyzer precision pump is disclosed. In one general aspect, it has a pump block that defines a first pump chamber with a fluid port at a first end, an opening for a piston at a second end, and a seal mount located between the opening and the port. A second, smaller, pump chamber also has a fluid port at a first end, an opening for a piston at a second end, and a seal mount located between the opening and the port. A first seal is mounted at the first seal mount and a second seal is mounted at the second seal mount. A first piston is mounted to reciprocate in the first pump chamber, past the first seal, and a second, smaller piston is mounted to reciprocate in the second pump chamber, past the second seal. The first and second pistons and the first and second pump chambers can be conically shaped.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: November 23, 2010
    Assignee: Medica Corporation
    Inventors: Tony Mao, Ronald Jones, Stanley Liffmann
  • Publication number: 20100284827
    Abstract: A method for homogenizing conveying flow from at least two oscillating positive displacement pumps utilizing a drive motor for each pump and a rotating shaft, the fluid conveying flow in a conveying line is generated by the oscillating positive displacement pumps, the drive motors controlled such that the conveying flow generated overall in the conveying line is largely uniform or constant. An apparatus according to the invention is distinguished by at least two oscillating positive displacement pumps, the delivery lines of which are connected to a common conveying line in order to superimpose the individual conveying flows and each have a drive motor which can be operated in electronic synchronization without mechanical coupling in order to achieve a largely uniform or constant total conveying flow.
    Type: Application
    Filed: May 6, 2010
    Publication date: November 11, 2010
    Applicant: LEWA GMBH
    Inventors: MATTHIAS SAUTER, MATTHIAS DORLING
  • Publication number: 20100196169
    Abstract: Vessels (10, 11, 12 and 13) are associated with an inlet manifold (14) passing to inlets (16), each controlled by a knifegate valve (17). The lower ends of the pots (10) and (12), and pots (11) and (13), pass material through respective outlet knifegate valves (22) to respective first (23) and second (24) delivery lines. The respective knifegate valves (17) and outlet knifegate valves (22) of pots (10) and (11) on the one hand and pots (12) and (13) on the other, are operable by respective common pneumatic actuators (25). Each pot has an ejector assembly (26) having an upper chamber (28), an air injector nozzle (30), and an accelerator tube (31) to create the venturi function. An air cycling valve (32) transitions the upper chamber (28) between a depressurized space and a pressurized space. The accelerator tube (31) exhausts to a delivery line (23 or 24). Ejector assembly (26) air is supplied via air control valve (35).
    Type: Application
    Filed: August 8, 2007
    Publication date: August 5, 2010
    Inventor: Mark Krohn
  • Publication number: 20100183449
    Abstract: A high-pressure pump for supplying fuel to an internal-combustion engine has a pump body and an actuating shaft which extends along a longitudinal axis and which is supported rotatably about the longitudinal axis by the pump body. The shaft has an eccentric portion and a prismatic jacking end. A first pumping station has a gear engaged with the prismatic jacking end and a second pumping station has at least one piston. The piston is slidable relative to the pump body transversely with respect to the longitudinal axis and is actuated by the eccentric portion of the actuating shaft. The prismatic jacking end is made of a harder material than the material with which the remainder of the actuating shaft is made.
    Type: Application
    Filed: June 11, 2008
    Publication date: July 22, 2010
    Inventors: Vito Spinelli, Antonio Grimaldi, Nello Medoro
  • Publication number: 20100111715
    Abstract: A pump system has a rotatory shaft and a rotatory drive arrangement coupled to the rotatory shaft for applying rotatory energy thereto. First through fourth pump arrangements are coupled to the rotatory shaft, each pump arrangement pumping a pulse of air during each rotation of the rotatory shaft, the first, second, third, and fourth pump arrangements pumping a corresponding pulse of air sequentially during each rotation of the rotatory shaft. The rotatory shaft has a first and second ends, and a central region therebetween where an electric motor is coaxially arranged. The first and third pump arrangements are coupled to the first end of the rotatory shaft, and the second and fourth pump arrangements are coupled to the second end of the rotatory shaft. Angularly displaced eccentric couplers couple the pump arrangements to the respective ends of the rotatory shaft.
    Type: Application
    Filed: August 17, 2007
    Publication date: May 6, 2010
    Applicant: L*VAD TECHNOLOGY, INC.
    Inventors: Paul G. DeDecker, Paul S. Freed
  • Publication number: 20100078183
    Abstract: A method for pumping water on a naval vessel is disclosed, the method including but not limited to pumping fresh water from a fresh water reservoir into a fresh water flush tank; pumping salt water from a salt water reservoir into a a fire water reservoir during fire operations; controlling a valve in liquid communication to alternately connect the fire water reservoir to the salt water reservoir to supply salt water to the fire water reservoir during fire operations and connecting the fire water reservoir to the fresh water flush to flush salt water from the fire water reservoir after fire water operations. A system is disclosed for practicing the method.
    Type: Application
    Filed: November 12, 2008
    Publication date: April 1, 2010
    Applicant: Power Integration Consulting, Inc.
    Inventor: John Janik
  • Patent number: 7641450
    Abstract: The present invention aims to provide a transfer method and a transfer facility for an easily polymerizable substance that limits standing retention of the easily polymerizable substance in the feed pump, etc., and the generation and adherence of solid matter such as polymer or precipitate that accompanies such retention, in a facility in which respective feed pumps are disposed at the plurality of passages that branch off at the easily polymerizable substance inflow side and converge at the easily polymerizable substance outflow side. In this easily polymerizable substance transfer method, in the case where one feed pump 13 operates and the other feed pump 14 is stopped, a portion of the easily polymerizable substance is fed to feed pump 14 and second passage 12 in a direction that is opposite to the direction of flow of the easily polymerizable substance when feed pump 14 is activated.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: January 5, 2010
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Michiyuki Kouno, Yasuhiro Kabu, Yoshiyuki Taniguchi, Nobuo Momodomi
  • Publication number: 20090297365
    Abstract: A foot air-extracting and inflating machine includes a machine body having a support frame provided with a pivot support member for pivotally assembling a pedal having its underside disposed with two push-rod pivot support members. The machine body is installed inside with two pumps respectively provided with a piston having a push rod pivotally combined with the push rod pivot support member of the pedal. Each pump has its lower side juxtaposed with two one-way valves respectively positioned in the two-way direction and having its lower side bored with air holes covered with a valve plate. An air suction tube and an exhaust tube are assembled under each pump, respectively aligned to the one-way valves. An air suction manifold communicates the two air suction tubes and connected with an air suction outer tube, and an exhaust manifold communicates the two exhaust tubes and connected with an exhaust outer tube.
    Type: Application
    Filed: May 28, 2008
    Publication date: December 3, 2009
    Inventors: I-Jung CHENG, Chien-Chang Cheng