Plural Pumps With Individual Or Relative Control Patents (Class 417/426)
  • Patent number: 10378326
    Abstract: Providing pressurized fracturing fluid with a fracturing pump transport comprising a first fracturing pump and a second fracturing pump that are coupled on opposite sides of a dual shaft electric motor. A first drive line assembly comprising a first engagement coupling that allows for selective engagement and/or disengagement of the first fracturing pump with the dual shaft electric motor. A second drive line assembly comprising a second engagement coupling that allows for selective engagement and/or disengagement of the second fracturing pump with the dual shaft electric motor. The fracturing pump transport also comprising an engagement panel that allows for selective engagement or disengagement at the first engagement coupling based on receiving a remote command.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: August 13, 2019
    Assignee: TYPHON TECHNOLOGY SOLUTIONS, LLC
    Inventors: Jeffrey G. Morris, Neal Jensen, Adrian Benjamin Bodishbaugh
  • Patent number: 9422052
    Abstract: An electro hydrostatic actuator system for retracting/extending a landing gear includes a plurality of hydraulic actuators, a plurality of hydraulic supply sources each including a single hydraulic pump and a single electric motor, provided in parallel to each other and joined at the downstream ends, a plurality of switching valves provided in parallel on a supply path that connects the hydraulic actuators to a junction of the hydraulic supply sources, and a controller configured to sequentially operate the hydraulic actuators. The hydraulic supply sources each include a check valve which prevents operation oil from flowing toward the hydraulic pump. In a normal state, the hydraulic supply sources together supply operation oil sequentially to the hydraulic actuators. When any of the hydraulic supply sources is failed, the other hydraulic supply source(s) other than the failed hydraulic supply source supplies operation oil sequentially to the hydraulic actuators.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: August 23, 2016
    Assignee: SUMITOMO PRECISION PRODUCTS CO., LTD.
    Inventors: Taku Kondo, Shogo Hagihara
  • Patent number: 9032748
    Abstract: An industrial fluid circulating system having at least one fluid circulation circuit, includes a plurality of pumps connected in parallel to circulate the fluid through each of the fluid circulation circuit, a separate motor driving each pump, a load detector to sense operating loads on the system and each circuit, and a speed control to vary the speed of each motor to thereby vary the pumping capacity of each pump in response to the detected load on the system, each pump of each respective circuit running simultaneously at a substantially similar speed or a predetermined equal reduced speed of the respective circuit or an almost equal reduced speed or a similar reduced speed.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: May 19, 2015
    Inventors: David Man Chu Lau, Ka Lim Shek
  • Patent number: 9004876
    Abstract: A cooling system includes a fan group with a number of fans arranged in a row, a rail extending in a direction parallel to the row of the fans. A backup fan slidably mounted to the rail, a motor configured to control the movement of the backup fan, and a control board to determine whether there exists one malfunction fan in the fan group. When one abnormal fan exists in the fan group, the control board outputs a control signal to the motor, to enable the motor to drive the backup fan to move to a location corresponding to the abnormal fan.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: April 14, 2015
    Assignee: Zhongshan Innocloud Intellectual Property Services Co., Ltd.
    Inventors: Zhen-Xing Ma, Lei Liu
  • Patent number: 8979915
    Abstract: The invention relates to a separable device for the application of compression and thermal therapy to a patient. A first section includes a reservoir, liquid pump and a thermal exchange system for the application of thermal therapy as well as a dock. The second section of the device includes an air compressor and at least one controller for the application of compression therapy and can be operated independently from the first section. Additionally, the second section may be engaged with a dock of the first section.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: March 17, 2015
    Inventors: Michael L. Wilford, Aaron Stein, John Lewis, Fernando Ubidia
  • Patent number: 8951023
    Abstract: Pumping systems and methods for delivering a plurality of different pumpable materials serially at a location at substantially the same flow rate includes a plurality of diaphragm pumps, wherein each diaphragm pump has a first chamber for receiving a hydraulic fluid from a first and/or second hydraulic fluid source and a second chamber for receiving a material to be pumped from one of a plurality of pumpable material sources. A sensor is provided for detecting the pressure of the hydraulic fluid in each of the first chambers of the plurality of diaphragm pumps and is operable to activate the source of hydraulic fluid to ensure that the hydraulic fluid in each of the first chambers of the plurality of diaphragm pumps has an equivalent pressure.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: February 10, 2015
    Assignee: Stratabolt (Proprietary) Limited
    Inventor: Donald Michael O'Connor
  • Publication number: 20140356189
    Abstract: An apparatus for generating negative pressure in an installation for filling containers with liquid bulk product includes a vacuum device, and a control-and-regulating unit. The vacuum device has a controllable suction power, and has a plural electrically-powered vacuum pumps. These are configured to operate in parallel. The control-and-regulating unit is configured to control the number of vacuum pumps that are active, thereby controlling the suction power.
    Type: Application
    Filed: August 1, 2012
    Publication date: December 4, 2014
    Inventors: Gernot Haas, Gregor Schafer, Olaf Muszinki
  • Publication number: 20140326042
    Abstract: Provided are sampling pumps and gas analyzers using the sampling pumps. The sampling pump may include at least one reciprocating pump set and a control system. Each reciprocating pump set can include two reciprocating pumps. The control system can output drive signals for controlling reciprocating drawing and compressing operations of the reciprocating pumps, where the control system may be designed to output the drive signals that cause the two reciprocating pumps within the same set to provide opposing impact directions at the same time.
    Type: Application
    Filed: July 17, 2014
    Publication date: November 6, 2014
    Inventors: Weidong Zhou, Zhonghua Liu, Yunfeng Liu, Jian Chen, Heng Chen, Guangqi Huang, Joakim Carl Gabrielsson, Johan Nils Ernst Werner, Peter Erik Axel Svedmyr
  • Patent number: 8827660
    Abstract: The invention relates to a wind turbine being provided with a fluid displacement means for ensuring a certain increased pumping capacity at a certain reduced rotational speed of the main shaft of the rotor and thus of a drive shaft from a gear box of the wind turbine. The invention also relates to a wind turbine being provided with fluid displacement means for ensuring a certain increased pumping capacity at a certain increased rotational speed of the main shaft of the rotor and thus of a drive shaft from a gear box of the wind turbine. The means may be mechanical, hydraulic, pneumatic or electrical. Additionally, the invention relates to a method for operating a wind turbine being provided with such fluid displacement means.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: September 9, 2014
    Assignee: Vestas Wind Systems A/S
    Inventors: Poul Spaerhage Frokjaer, Jens Demtroder
  • Patent number: 8801407
    Abstract: A hydraulic power device for effecting operation of at least one load, the hydraulic power device including a motor having a predetermined motor speed rating and motor power rating, at least one pump operably coupled to the motor, the pump being configured to provide, to the at least one load, a predetermined hydraulic fluid flow at the predetermined motor speed rating, and a variable frequency drive connected to the motor, the variable frequency drive being configured to effect operation of the motor at a speed above the predetermined motor speed rating such that the at least one pump operates to provide an excess hydraulic fluid flow during operation of the motor substantially above the predetermined motor speed rating where the excess fluid flow is greater than the predetermined hydraulic fluid flow.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: August 12, 2014
    Assignee: Harris Waste Management Group, Inc.
    Inventor: Edwin K. Simpson
  • Patent number: 8793044
    Abstract: A vehicle control system includes: a power unit including an engine and a rotating electrical machine; a power supply apparatus connected to the rotating electrical machine; an oil pump unit including a mechanical oil pump and an electric oil pump for cooling the rotating electrical machine; and a control apparatus. The control apparatus is constituted by an EOP idling determination unit that determines an idling state of the electric oil pump, and an engine starting processing unit that performs processing to drive the mechanical oil pump by starting the engine in accordance with the determination of the EOP idling determination unit.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: July 29, 2014
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki Kaisha
    Inventors: Tomohiko Miyamoto, Kenjiro Nagata
  • Patent number: 8740582
    Abstract: For refrigeration units, maintenance machines are required that can receive and compress the refrigerant from the refrigeration unit. Furthermore, a vacuum pump is required, which is connected to the emptied lines and pumps out humidity and air. The maintenance machine according to the invention includes a motor that drives a compressor via a freewheel in one rotational direction. The same motor drives a vacuum pump via a second freewheel in the other rotational direction. The maintenance machine, which can perform two different functions, includes only one single motor. The machine is lightweight, so that it can be carried by the maintenance personnel. Furthermore, it is small and can be produced in a cost-effective manner.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: June 3, 2014
    Assignee: Inficon GmbH
    Inventor: Gerd H. Rabe
  • Patent number: 8734119
    Abstract: The invention is an apparatus and method of varying power output and decrease noise generation of spa pumps by powering them with a variable frequency power device, digital signals capable of controlling cascaded pumps using ganged controls, and to decrease safety concerns of spas using an integrated water level and motion detectors.
    Type: Grant
    Filed: June 5, 2011
    Date of Patent: May 27, 2014
    Assignee: Luraco Technologies, Inc.
    Inventors: Kevin Le, Sivakumar Parameswaran, Thanh Le
  • Publication number: 20140134001
    Abstract: A fluid supply apparatus which supplies fluid to a medical apparatus includes: a pump mechanism including a first pump capable of a suction operation of the fluid after a feeding operation of the fluid, and a second pump capable of a suction operation of the fluid during the feeding operation and a feeding operation of the fluid during the suction operation; a flow path which includes an elastic member and which communicates with the first pump and the second pump and supplies the fluid to the medical apparatus; and a flow path deforming unit which deforms a part of the flow path. The flow path deforming unit starts first deformation of the flow path before the first pump switches from the feeding operation to the suction operation, and completes the first deformation and starts second deformation of the flow path during the feeding operation by the second pump.
    Type: Application
    Filed: November 7, 2013
    Publication date: May 15, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kazuaki UCHIDA, Atsuya HIRABAYASHI, Takeshi SETO, Takahiro MATSUZAKI
  • Patent number: 8636483
    Abstract: A pump apparatus configured with a first pump for pumping working fluid in accordance with a reciprocation of a piston using a space between a first open/close valve for suction and a second open/close valve for discharge as a pump chamber. The pump apparatus is also configured a first flow passage for supplying the working fluid from a supply source to an operation subject via the first open/close valve, the pump chamber, and the second open/close valve in accordance with an operation of the first pump. A second flow passage supplies the working fluid pumped by a second pump, which is different from the first pump, to the pump chamber. A selector is configured to select either the first flow passage or the second flow passage.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: January 28, 2014
    Assignee: Aisin AW Co., Ltd.
    Inventors: Tetsuya Shimizu, Kazuhiko Kato, Kazunori Ishikawa, Noriomi Fujii
  • Patent number: 8628310
    Abstract: A fan system includes: two circuit breakers, a control module for controlling two circuit breakers, two electric motors to which their operating voltage UB is supplied via the circuit breakers, and at least one temperature sensor on a board on which the circuit breakers are located. The control module evaluates a signal TNTC from the temperature sensor, and sets the pulse duty factors TV1, TV2 of pulsed control voltages at the circuit breakers, while taking into account this signal as well as a requested fan power, in such a way that no power loss PV exceeding a specified value occurs at any circuit breaker.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: January 14, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Stefan Koch, Patric Kahles, Volker Lurk
  • Patent number: 8616857
    Abstract: An oil pump unit with a variable flow rate includes lubrication pumps and a control pump that are driven by rotation of a crankshaft of an engine, and changes an oil supply amount from the control pump to each part of the engine, in which the control pump includes a plurality of oil pumps that have different discharge rates.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: December 31, 2013
    Assignees: Yamada Manufacturing Co., Ltd., Honda Motor Co., Ltd.
    Inventors: Keiichi Kai, Junichi Miyajima, Noriyuki Kawamata, Toshimasa Mitsubori, Satoshi Ino
  • Publication number: 20130315761
    Abstract: The invention relates to a vacuum generator module comprising a substantially rectangular box housing: the pneumatic vacuum generator means and their channels for connection to an admission orifice for admitting a gas under pressure, to a gas exhaust orifice, and to a suction orifice, each orifice opening to the outside via one of the faces of the box; and electronic means for controlling and monitoring the operation of the pneumatic means and their electrical connections with an electrical power supply and external control members using a defined program, including two connectors, one being an input connector, and the other being an output connector likewise installed in one of the faces of the box; the set being characterized in that: the electronic means comprise a multi-network I/O microcontroller suitable for imparting a master or slave function to the module depending on whether the module is or is not directly connected to a fieldbus present in a vacuum handling machine incorporating the module.
    Type: Application
    Filed: February 29, 2012
    Publication date: November 28, 2013
    Applicant: COVAL
    Inventors: Pierre Milhau, Michel Cecchin
  • Patent number: 8556598
    Abstract: A sealed compressor has an outer housing and a separator plate received within the outer housing. The separator plate defines a suction chamber and a discharge pressure chamber within the outer housing. A locating plate is positioned within the suction pressure chamber. The locating plate has a plurality of positioning locations for receiving separate compressor housings. The separator plate has a plurality of positioning openings for receiving the separate compressors. A plurality of compressors are each received within their own housing, and include compressor pump units. The plurality of compressors extend between the openings in the locating plate and through the openings in the separator plate. The separate compressors deliver compressed refrigerant into the discharge pressure chamber.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: October 15, 2013
    Assignee: Danfoss Scroll Technologies LLC
    Inventors: Carlos Zamudio, Joe T. Hill
  • Patent number: 8556574
    Abstract: A fan array fan section in an air-handling system includes a plurality of fan units arranged in a fan array and positioned within an air-handling compartment. One preferred embodiment may include an array controller programmed to operate the plurality of fan units at peak efficiency. The plurality of fan units may be arranged in a true array configuration, a spaced pattern array configuration, a checker board array configuration, rows slightly offset array configuration, columns slightly offset array configuration, or a staggered array configuration.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: October 15, 2013
    Assignee: Huntair, Inc.
    Inventor: Lawrence G. Hopkins
  • Patent number: 8556593
    Abstract: A counter-rotating axial-flow fan may be controlled to improve both cooling efficiency and operating efficiency. A first motor and a second motor are started in a given starting mode. Then, if the temperature of an object to be cooled is higher than a given reference temperature, the rotational speed of the first motor and the rotational speed of the second motor are controlled in a predetermined cooling efficiency mode that gives priority to cooling the object to be cooled over the operating efficiency of the counter-rotating axial-flow fan. If the temperature of the object to be cooled is equal to or lower than the given reference temperature, the rotational speeds of the first and second motors are controlled in a predetermined operating efficiency mode that maintains the object to be cooled at a temperature equal to or lower than the given reference temperature and reduces the power consumption of the counter-rotating axial-flow fan.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: October 15, 2013
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Honami Osawa, Naruhiko Kudo, Yoshihiko Aizawa
  • Patent number: 8418964
    Abstract: A fuel supply installation for a turbojet including two volumetric pumps for combining their flow rates is disclosed. The pumps include a main pump dimensioned for the full gas rate and an auxiliary pump controlled and dimensioned to provide the supplementary flow rate necessary on ignition.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: April 16, 2013
    Assignee: Snecma
    Inventors: Pascal LeBlanc, José Roland Rodrigues
  • Patent number: 8418498
    Abstract: A refrigeration device includes an interior that is divided up into two refrigeration zones with each refrigeration zone having an evaporator and a compressor for supplying the evaporator with a refrigerant. A control for operating the compressors can be operated in different modes of operation depending on predetermined conditions. In a normal mode, the at least two compressors are exclusively operated at different times.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: April 16, 2013
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Georg Hausmann, Hans Ihle
  • Patent number: 8337176
    Abstract: A compressor assembly includes at least two tandem compressors. Tandem compressors have at least one common suction manifold, communicating a source of working fluid to be compressed by each of at least two compressors, and at least one common discharge manifold communicating a compressed fluid downstream for further use. A common intermediate pressure manifold communicates with intermediate pressure ports in at least two compressors. The intermediate manifold may communicate fluid to or out of the at least two compressors. There is normally no direct communication between suction and discharge manifolds.
    Type: Grant
    Filed: December 26, 2006
    Date of Patent: December 25, 2012
    Assignee: Carrier Corporation
    Inventors: Alexander Lifson, Michael F. Taras
  • Patent number: 8287255
    Abstract: A variable displacement rotary pump includes a main pump unit, an auxiliary pump unit, a discharge passage, a bypass passage, a suction passage, a check valve and a control valve. The suction passage is in communication with the discharge passage through the bypass passage and a second discharge port. The check valve is disposed in the discharge passage for preventing fluid in a first discharge port of the main pump unit from flowing into the bypass passage. The control valve is operable for opening and closing the bypass passage. When the control valve opens the bypass passage and the check valve closes the discharge passage, flow rate of the fluid discharged from the discharge passage is reduced. A throttle passage is provided in the bypass passage or the control valve for regulating flow of the fluid in early phase of operation of the control valve to open the bypass passage.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: October 16, 2012
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Hironao Yokoi, Shigeru Suzuki, Katsumi Yamashita, Toshiro Fujii
  • Patent number: 8287230
    Abstract: A controller for a system having at least one variable-capacity, pulse-width modulated compressor and at least one fixed-capacity compressor is provided. The controller may include processing circuitry that modulates the at least one variable-capacity, pulse-width modulated compressor to any capacity substantially between ten percent capacity and one hundred percent capacity. The processing circuitry may determine a desired capacity of the at least one variable capacity, pulse-width modulated compressor based on a load sensor signal and a current run percentage of the at least one variable capacity, pulse-width modulated compressor and may toggle the at least one fixed-capacity compressor between a run mode and a shutdown mode based on the desired capacity of the at least one variable-capacity, pulse-width modulated compressor.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: October 16, 2012
    Assignee: Emerson Climate Technologies Retail Solutions, Inc.
    Inventors: Ernest P. Hurst, Jr., Hung M. Pham
  • Patent number: 8287254
    Abstract: The present invention comprehends a gerotor or gear pump driven by a permanent magnet motor which exhibits cogging torque, i.e., resistance to rotation when de-energized caused by interaction between permanent magnets in the rotor and teeth on the stator. Such interaction causes the rotor to come to rest in one of many defined rotational positions and resist rotation when electrical power to the motor has been terminated. The permanent magnet motor is coupled, preferably directly, to a gerotor pump having meshing rotors or a gear pump having meshing gears. When the motor is de-energized, the pump rotors or gears come to rest and their rotation is resisted by the cogging torque of the motor. The invention finds particular application in automotive transmissions and systems with parallel pumps.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: October 16, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Robert E. Rhein, Todd A Frerichs, Peter Bostwick
  • Patent number: 8277197
    Abstract: A multi-stage compression installation is formed of a main pipe (2) emerging in a baffle plate (3), where at least two compressors (4, 5) are mounted in series each having its own drive member (9, 10). The installation is equipped with a system for determining the pressure at the output of the main pipe (2), the installation being connected to a control box (8). Typically, the control box (8) is connected to at least two of the drive members (9, 10) of the compressors (4, 5) and ensures monitoring of the compressors such that the latter rotate jointly whether charged or uncharged. Thus, the compressors (4, 5) are jointly charged based on the pressure prevailing in the baffle plate (3), such that the charging of the compressor representing the overpressure stage, the compressor(s) of the lower compression stages are automatically and jointly charged.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: October 2, 2012
    Assignee: Atlas Copco Crepelle S.A.S.
    Inventors: Patrick Marcel Augustin Lelong, Hans Theo Magits
  • Patent number: 8229609
    Abstract: A marine vessel control apparatus is arranged to start and stop engines that are respectively provided in multiple propulsion devices. The marine vessel control apparatus includes multiple individual start/stop switches arranged to correspond to the respective multiple propulsion devices and arranged to be operated by an operator to individually start and stop the engines in the respective multiple propulsion devices, an all-device start/stop switch arranged to be operated by the operator to collectively start and stop the engines in the multiple propulsion devices, an operating state acquiring unit arranged to acquire operating states of the engines in the respective multiple propulsion devices, and a control unit. The control unit includes multiple input ports corresponding to the respective multiple individual start/stop switches. Each of the input ports is connected with the corresponding individual start/stop switch. All of the input ports are connected commonly with the all-device start/stop switch.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: July 24, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Takaaki Bamba, Makoto Ito
  • Publication number: 20120107158
    Abstract: A sealed compressor has an outer housing and a separator plate received within the outer housing. The separator plate defines a suction chamber and a discharge pressure chamber within the outer housing. A locating plate is positioned within the suction pressure chamber. The locating plate has a plurality of positioning locations for receiving separate compressor housings. The separator plate has a plurality of positioning openings for receiving the separate compressors. A plurality of compressors are each received within their own housing, and include compressor pump units. The plurality of compressors extend between the openings in the locating plate and through the openings in the separator plate. The separate compressors deliver compressed refrigerant into the discharge pressure chamber.
    Type: Application
    Filed: November 2, 2010
    Publication date: May 3, 2012
    Inventors: Carlos Zamudio, Joe T. Hill
  • Publication number: 20110243772
    Abstract: Optimisation of components of a fuel supply installation for a turbojet. The installation comprises two volumetric pumps for combining their flow rates, a main pump (14) dimensioned for the full gas rate and an auxiliary pump (16) controlled and dimensioned to provide the supplementary flow rate necessary on ignition.
    Type: Application
    Filed: December 7, 2010
    Publication date: October 6, 2011
    Applicant: SNECMA
    Inventors: Pascal LEBLANC, Jose Roland Rodrigues
  • Patent number: 8021122
    Abstract: Apparatus for maintaining differential internal fluid pressure in a dual fluid chamber object where it is desired for one chamber to have greater internal pressure than the other includes a sensor for generating a differential signal indicating the difference in pressure between the chambers, a pressure sensor for generating a pressure signal indicating the pressure inside the chamber desired to have less pressure, a comparator for generating a first output when the differential signal is less than a predetermined minimum differential value, a second comparator for generating a second output when the pressure signal is less than a predetermined minimum pressure value, where the predetermined minimum pressure value biased by the first output, and blowers coupled to the respective chambers and responsive to said first and second outputs respectively.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: September 20, 2011
    Assignee: GATR Technologies
    Inventors: William R. Clayton, Paul A. Gierow
  • Patent number: 7955056
    Abstract: Method for adjusting a compressed air installation using several electrically driven compressors of what is called the “loaded/unloaded” type and/or the turbo compressor type and/or the compressor type with variable rotational speed, wherein these compressors are each connected to a single compressed air network with their outlets, and wherein use is made of a control box which makes it possible to adjust the pressure in the compressed air network around a target pressure to be set. The adjustment takes place by controlling the flow of one or several of the compressors, in particular in order to increase the overall flow supplied by the compressors when the pressure drops too much, and in order to lower the overall supplied flow when the pressure becomes too high.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: June 7, 2011
    Assignee: Atlas Copco Airpower, Naamloze Vennootschap
    Inventor: Johan Georg Urban Pettersson
  • Patent number: 7922442
    Abstract: A fan array fan section in an air-handling system includes a plurality of fan units arranged in a fan array and positioned within an air-handling compartment. One preferred embodiment may include an array controller programmed to operate the plurality of fan units at peak efficiency. The plurality of fan units may be arranged in a true array configuration, a spaced pattern array configuration, a checker board array configuration, rows slightly offset array configuration, columns slightly offset array configuration, or a staggered array configuration.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: April 12, 2011
    Assignee: Huntair, Inc.
    Inventor: Lawrence G. Hopkins
  • Patent number: 7918655
    Abstract: A compressor control system includes at least one variable compressor, at least one fixed-capacity compressor, and a controller. The controller modulates the variable compressor based on a suction pressure reading of the variable compressor. In addition, the controller selectively toggles the fixed-capacity compressor between a run mode and a shutdown mode based on an operating parameter of the variable compressor.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: April 5, 2011
    Assignee: Computer Process Controls, Inc.
    Inventors: Ernest P. Hurst, Jr., Hung M. Pham
  • Patent number: 7914252
    Abstract: A fan array fan section in an air-handling system includes a plurality of fan units arranged in a fan array and positioned within an air-handling compartment. One preferred embodiment may include an array controller programed to operate the plurality of fan units at peak efficiency. The plurality of fan units may be arranged in a true array configuration, a spaced pattern array configuration, a checker board array configuration, rows slightly offset array configuration, columns slightly offset array configuration, or a staggered array configuration.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: March 29, 2011
    Assignee: Huntair, Inc.
    Inventor: Lawrence G. Hopkins
  • Patent number: 7909582
    Abstract: A control apparatus for controlling two oil pumps which are provided on a vehicle wherein the two oil pumps are selectively driven by respective different drive power sources such that one of the two oil pumps is operated while the other oil pump is held at rest, the control apparatus including an air removal control portion configured to temporarily operate the above-indicated other oil pump during an operation of the above-indicated one oil pump, to remove air staying at and around an oil inlet of the above-indicated other oil pump.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: March 22, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenta Kumazaki, Tooru Matsubara, Atsushi Tabata
  • Patent number: 7866959
    Abstract: An electronic system, an apparatus for cooling an electronic system, an electronics cooling apparatus, and associated method use a clutch to operate a cooling fan. An electronics cooling fan for usage in cooling an electronic system comprises a clutch that disengages upon failure wherein the electronics cooling fan is configured to freewheel upon disengagement of the clutch.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: January 11, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Stephan Karl Barsun, Edward Anglada, James David Hensley
  • Publication number: 20100322810
    Abstract: The invention relates to a pump assembly for the synchronous pressurization of two fluid circuits. Two internal gear pumps are disposed together in a pump housing and rotationally driven by drive shafts thereof. Pinions of the pumps are located in an associated pump chamber and engage in an internal gear thereof. The pump chambers of the internal gear pumps are separated from each other by a common separating wall or partition, which is designed as a separate housing part and engages in a hollow cross-section of a housing part forming the circumferential wall of one of the internal gear pumps. Suction channels and pressure channels associated with the internal gear pumps transition into a radially extending longitudinal section in the pump housing following an axial longitudinal section in the lateral boundary wall of the associated pump chamber. According to the invention, a suction channel and a pressure channel of one of the internal gear pumps are integrated in the separating wall.
    Type: Application
    Filed: September 26, 2008
    Publication date: December 23, 2010
    Inventors: Rene Schepp, Norbert Alaze
  • Patent number: 7854596
    Abstract: A system for cancelling or attenuating noise in at least two positive displacement compressors proximately located from each other for use with a heating or cooling system. A lead compressor and a lag compressor have a controllable rotational speed and phase of operation. A controller selectably controls the rotational speed and the phase of operation of each of the compressors. The controller controls the rotational speed of the compressors at substantially the same speed for each compressor, with a phase-lock loop and a comparator circuit for each compressor. The controller controls the phase of operation of the compressors through an oscillator so that the lead and lag compressor pressure pulses are spaced between successive outlet pressure pulses to effectively double the combined pulsation frequency for noise attenuation.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: December 21, 2010
    Assignee: Johnson Controls Technology Company
    Inventors: Harold Robert Schnetzka, E. Curtis Eichelberger, Jr., Paul Nemit, Jr.
  • Patent number: 7753655
    Abstract: A modular system for the control of at least one compression system for the compression a fluid medium, said compression system comprising compressors (C1-C7) and their controllers (A1-A7) for the compression of the fluid medium, secondary treatment devices for the treatment of the medium delivered from the compressors, and piping systems (17-19, 23) for conducting the fluid medium to a place of consumption (16, 22), said control system comprising a control unit (3) containing a data processing system (34) for controlling the compression system, a user interface (35) including a display associated with it and transmission means for the transmission of control data between the control unit, the controllers and pressure sensors. The transmission means consist of data communication buses, preferably serial communication buses (30-32) and a data communication port unit (33) serving to connect the bus to the control unit (34). The controllers and pressure sensors are connected to common data communication buses.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: July 13, 2010
    Assignee: CompAir UK Limited
    Inventors: Vesa Saarinen, Lauri Valovirta, Sami Nyman
  • Publication number: 20100116508
    Abstract: A downhole pump assembly for removing volumes of liquids, crude oils, gases, and produced waters, from oil or gas wells is described based on a downhole controllable electric drive, and a positive displacement pump, wherein the electric drive powers a hydraulic pump that powers the positive displacement pump.
    Type: Application
    Filed: May 20, 2008
    Publication date: May 13, 2010
    Inventor: Kenneth Doyle Oglesby
  • Patent number: 7600981
    Abstract: A method for optimizing the operation of several compressor units in a natural gas compression station. After a second or further compressor unit is started, the speeds of the running compressor units are set according to a fixed speed ratio in relation to characteristic data established for each compressor unit. The fixed speed ratio is altered by adjusting the rate of flow to the same percentage via the speed of rotation until the preventive pump valves of the gas compressor station are closed, whereupon the operating points of the compressor units are guided, where possible, in the characteristic data thereof, to the maximum efficiency. The optimum set speed values are determined according to continuous operating characteristics of the gas compression station by coordinated variation of the set speeds of the compressors, taking into account fuel consumption of the gas compression station. The stored fixed speed ratio is adjusted according to the optimum set speed values thus determined and stored.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: October 13, 2009
    Inventor: Dieter Lau
  • Publication number: 20090175745
    Abstract: A blower unit for generating air for cooling a heat exchanger includes a plurality of blowers, a single motor, a driving shaft, gears, gear boxes and a joint. The blowers are arranged in parallel with each other with respect to a flow of air passing through the heat exchanger. The driving shaft extends from the motor and is connected to rotation shafts of the blowers through the gears. The gear boxes house the gears therein and support the driving shaft and the rotation shafts of the blowers to be rotatable. The driving shaft is divided into a plurality of shaft parts in a longitudinal direction thereof. The adjacent shaft parts are connected to each other through the joint.
    Type: Application
    Filed: January 6, 2009
    Publication date: July 9, 2009
    Applicant: DENSO CORPORATION
    Inventor: Takuya Usami
  • Patent number: 7543695
    Abstract: A hydraulic system for an electro-mechanical transmission includes an electrically-powered main pump, a battery powered auxiliary pump and an output pump. The main pump provides fluid to transmission components such as a torque-transmitting mechanism. The auxiliary pump provides fluid pressure to engage the torque-transmitting mechanism when electric power to the main pump is unavailable or the main pump is otherwise inoperable. The engaged torque-transmitting mechanism enables rotation of an output member which mechanically powers the output pump so that it may provide fluid to the transmission components in lieu of the main pump. A method of providing fluid to transmission components is also provided.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: June 9, 2009
    Assignee: GM Global Technology Operations, Inc.
    Inventors: James A. Redelman, Clifford H. Oehme, James P. Ordo
  • Patent number: 7409849
    Abstract: Insulating oil in electric power generation, transmission and distribution equipment such as circuit breakers, regulators, phase shifters, tank diverter switches and capacitor banks for respectively separated phases of a plural phase transmission or distribution line is filtered for removal of accumulated water, carbon particles and other contaminants by filters in oil circuits respective to each phase in the plurality. Each oil circuit respective to each circuit breaker includes a respective filter and circulation pump. However, all pumps in the plural phase power system, for example, are driven by the same motor and drive line whereby a fluid condition or circulation interruption of one oil circuit that requires termination of pump operation in the one oil circuit terminates the pump operation in all oil circuits. Pump motor power is preferably drawn from an energy source that may be independent of that served by the transmission and/or distribution power source.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: August 12, 2008
    Assignee: FILMAX, Inc.
    Inventors: David McMahon Butler, Johnny James Clark
  • Publication number: 20080187433
    Abstract: A fan array fan section in an air-handling system includes a plurality of fan units arranged in a fan array and positioned within an air-handling compartment. One preferred embodiment may include an array controller programmed to operate the plurality of fan units at peak efficiency. The plurality of fan units may be arranged in a true array configuration, a spaced pattern array configuration, a checker board array configuration, rows slightly offset array configuration, columns slightly offset array configuration, or a staggered array configuration.
    Type: Application
    Filed: October 31, 2007
    Publication date: August 7, 2008
    Inventor: Lawrence G. Hopkins
  • Patent number: 7387498
    Abstract: A system is provided for attenuating noise in at least two positive displacement compressors proximately located from each other for use with at least one heating or cooling system. A lead compressor and a lag compressor have a selectably controllable rotational speed and a selectably controllable phase of operation. A controller selectably controls the rotational speed and the phase of operation of each of the compressors. The controller controls the rotational speed of the compressors at a predetermined rotational speed that is substantially the same for each of the compressors. The controller controls the phase of operation of the compressors by shifting the phase of operation of the lag compressor so that an outlet pressure pulse operatively produced by the lag compressor is substantially evenly spaced between successive outlet pressure pulses operatively produced by the reference compressor.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: June 17, 2008
    Assignee: York International Corporation
    Inventors: Harold Robert Schnetzka, E. Curtis Eichelberger, Jr., Paul Nemit, Jr.
  • Publication number: 20080139099
    Abstract: The present invention relates to a compressor arrangement with at least two compressors, wherein the compressor arrangement includes an intake chamber directly provided upstream of the at least two compressors together on the suction side.
    Type: Application
    Filed: November 5, 2007
    Publication date: June 12, 2008
    Inventor: Georg Baldauf
  • Patent number: RE41955
    Abstract: A compressor system includes a pair of compressors located in a common shell. A common drive shaft drives both compressors and the drive shaft is powered by a single motor. One or both of the compressors can be equipped with a pulse width modulated capacity control system and a vapor injection system. When one compressor is equipped with these systems, the capacity can be varied between 50% and 110%. When both compressors are equipped with these systems, the capacity can be varied between 0% and 120%.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: November 23, 2010
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Rajan Rajendran, John P. Sheridan, Carl H. Knapke