Stroke Device Driven By Successively Operated Energy Input Structure And Stored Energy Structure Patents (Class 60/417)
  • Patent number: 9222486
    Abstract: A power distribution system includes a prime mover and a hydraulic drive system. The hydraulic drive system includes an accumulator to store energy and supplement that available from the prime mover. A control monitors torque imposed on the prime mover and utilizes energy stored in the accumulator to offload the prime mover when its operating conditions are to be changed. Effecting a change under reduced load conditions mitigates inefficient operation of the prime mover.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: December 29, 2015
    Assignee: Concentric Rockford Inc.
    Inventors: George Kadlicko, John Gregorio, Tobin Gimber, Jeffrey Maney
  • Patent number: 9151243
    Abstract: An improvement is provided to a pressurized close-cycle machine that has a cold-end pressure vessel and is of the type having a piston undergoing reciprocating linear motion within a cylinder containing a working fluid heated by conduction through a heater head by heat from an external thermal source. The improvement includes a heat exchanger for cooling the working fluid, where the heat exchanger is disposed within the cold-end pressure vessel. The heater head may be directly coupled to the cold-end pressure vessel by welding or other methods. A coolant tube is used to convey coolant through the heat exchanger.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: October 6, 2015
    Assignee: New Power Concepts LLC
    Inventors: Jonathan Strimling, Clement D. Bouchard, Thomas Q. Gurski, Christopher C. Langenfeld, Michael G. Norris, Ryan K. LaRocque
  • Patent number: 8991167
    Abstract: A hydraulic drive system for driving a load includes a drive shaft; first and second hydraulic pumps driven by the drive shaft, and a control system that operates the hydraulic drive system in a plurality of modes including: a) a first mode where the second hydraulic pump pumps hydraulic fluid from a supply line to an accumulator; b) a second mode where the second hydraulic pump pumps hydraulic fluid from the accumulator to the supply line; c) a third mode where the second hydraulic pump pumps hydraulic fluid from the supply line to a reservoir; and d) a fourth mode where the second hydraulic pump pumps hydraulic fluid from the reservoir to the supply line. At least the second hydraulic pump is a variable displacement bidirectional pump.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: March 31, 2015
    Assignee: Eaton Corporation
    Inventors: QingHui Yuan, Ankur Ganguli
  • Patent number: 8966889
    Abstract: A hydraulic actuator includes an energy recuperation device which harvests the energy generated from the stroking of a shock absorber. The energy recuperation device can function in a passive energy recovery mode for the shock absorber or an active mode for the shock absorber. The energy that is generated by the energy recuperation device can be stored as fluid pressure or it can be converted to another form of energy such as electrical energy.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: March 3, 2015
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventor: Kristoff Six
  • Patent number: 8893486
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: November 25, 2014
    Assignee: LightSail Energy, Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr., AmirHossein Pourmousa Abkenar, Kartikeya Mahalatkar, Yongxi Hou, Todd Bowers, Karl E. Stahlkopf
  • Patent number: 8863508
    Abstract: A hydraulic circuit is disclosed. The hydraulic circuit may have a pump, a motor, a tank, and an accumulator. The hydraulic circuit may also have a valve movable between a first position at which an output of the pump is fluidly connected to the tank and the accumulator is fluidly connected to the motor, and a second position at which the output of the pump is fluidly connected to the motor.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: October 21, 2014
    Assignee: Caterpillar Inc.
    Inventors: Bryan E. Nelson, Jeremy T. Peterson, Jeffrey L. Kuehn
  • Patent number: 8806861
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: August 19, 2014
    Assignee: Lightsail Energy, Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr.
  • Patent number: 8769943
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: July 8, 2014
    Assignee: Lightsail Energy, Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr., AmirHossein Pourmousa Abkenar, Kartikeya Mahalatkar, Yongxi Hou, Todd Bowers, Karl E. Stahlkopf
  • Patent number: 8756929
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: June 24, 2014
    Assignee: LightSail Energy, Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr.
  • Patent number: 8756928
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: June 24, 2014
    Assignee: Lightsail Energy, Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr., AmirHossein Pourmousa Abkenar, Kartikeya Mahalatkar, Yongxi Hou, Todd Bowers, Karl E. Stahlkopf
  • Patent number: 8733095
    Abstract: In various embodiments, a mechanical assembly and/or storage vessel is fluidly coupled to a circulation apparatus for receiving pressurized heat-transfer fluid from an outlet at a first elevated pressure, boosting a pressure of the heat-transfer fluid to a second pressure larger than the first pressure, and returning heat-transfer fluid to an inlet at a third pressure.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: May 27, 2014
    Assignee: Sustainx, Inc.
    Inventors: Troy O. McBride, Benjamin R. Bollinger, Michael Neil Scott, Robert Cook, Patrick J. Magari
  • Publication number: 20140109561
    Abstract: A system for reversible storage of energy, the system comprising: means for generating energy; first conversion means for converting the energy into stored energy by means of low ratio (3.2:1 or less) high pressure (200 bar minimum) compression of gas; and second conversion means for converting the stored energy by expansion or reversal of the first process into usable energy.
    Type: Application
    Filed: October 17, 2013
    Publication date: April 24, 2014
    Inventors: Daniel Kenway, Dwayne Garneau
  • Patent number: 8627658
    Abstract: The invention relates to systems and methods for rapidly and isothermally expanding and compressing gas in energy storage and recovery systems that use open-air hydraulic-pneumatic cylinder assemblies, such as an accumulator and an intensifier in communication with a high-pressure gas storage reservoir on a gas-side of the circuits and a combination fluid motor/pump, coupled to a combination electric generator/motor on the fluid side of the circuits. The systems use heat transfer subsystems in communication with at least one of the cylinder assemblies or reservoir to thermally condition the gas being expanded or compressed.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: January 14, 2014
    Assignee: SustainX, Inc.
    Inventors: Troy O. McBride, Benjamin R. Bollinger, Michael Izenson, Weibo Chen, Patrick Magari, Benjamin Cameron, Robert Cook, Horst Richter
  • Patent number: 8572956
    Abstract: A hydraulic supply device of an automatic transmission, which supplies operating oil to the automatic transmission that is able to shift power from an engine and transmit the power to drive wheels of a vehicle by selectively engaging a plurality of frictional engagement devices using hydraulic pressure is disclosed.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: November 5, 2013
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Tomohiro Miyabe, Masanobu Kimura, Ryoichi Hibino, Shinobu Nakamura, Masahiro Tomida
  • Patent number: 8516809
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: August 27, 2013
    Assignee: LightSail Energy, Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr., AmirHossein Pourmousa Abkenar, Kartikeya Mahalatkar, Yongxi Hou, Todd Bowers, Karl E. Stahlkopf
  • Patent number: 8505288
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: August 13, 2013
    Assignee: LightSail Energy, Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr.
  • Patent number: 8474255
    Abstract: In various embodiments, efficiency of energy storage and recovery systems compressing and expanding gas is improved via heat exchange between the gas and a heat-transfer fluid.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: July 2, 2013
    Assignee: SustainX, Inc.
    Inventors: Troy O. McBride, Alexander Bell, Benjamin R. Bollinger, Andrew Shang, David Chmiel, Horst Richter, Patrick Magari, Benjamin Cameron
  • Patent number: 8468817
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: January 29, 2012
    Date of Patent: June 25, 2013
    Assignee: LightSail Energy, Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr.
  • Patent number: 8429907
    Abstract: A hydraulic system including a hydraulic power source (102) having an output and a directional control valve (106) coupled to the output of the hydraulic power source. The system also includes a hydraulic cylinder (108) coupled to the directional control valve that receives hydraulic fluid at a first port and expels it at a second port as it moves a load (114) at a movement rate, a fixed displacement motor (150) coupled the directional control valve and receiving hydraulic fluid expelled by the hydraulic cylinder and a variable displacement pump (154) attached to a drive arm (152) of the motor.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: April 30, 2013
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Timothy D. Gronli
  • Patent number: 8393148
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: March 12, 2013
    Assignee: Lightsail Energy Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr., AmirHossein Pourmousa Abkenar, Kartikeya Mahalatkar, Yongxi Hou, Todd Bowers
  • Publication number: 20130047597
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Application
    Filed: October 25, 2012
    Publication date: February 28, 2013
    Applicant: LightSail Energy Inc.
    Inventor: LightSail Energy Inc.
  • Publication number: 20130042605
    Abstract: An air compressor includes a compression unit, a drive unit, a tank unit, and a control circuit unit. The compression unit is configured to generate a compressed air and provided with a handle positioned above a center of gravity of the air compressor. The drive unit is configured to drive the compression unit. The tank unit is disposed below the compression unit and includes a plurality of air tanks configured to reserve the compressed air. The compressed air reserved in the tank unit has a pressure value. The control circuit unit is configured to detect the pressure value of the compressed air reserved in the tank unit and to control the drive unit to drive the compression unit.
    Type: Application
    Filed: August 14, 2012
    Publication date: February 21, 2013
    Applicant: Hitachi Koki Co., Ltd.
    Inventors: Hiroki Kitagawa, Tomoyoshi Yokota, Kenichi Matsunaga, Masahiro Miura, Shingo Kosugi
  • Patent number: 8359856
    Abstract: In various embodiments, a mechanical assembly and/or storage vessel is fluidly coupled to a circulation apparatus for receiving pressurized heat-transfer fluid from an outlet at a first elevated pressure, boosting a pressure of the heat-transfer fluid to a second pressure larger than the first pressure, and returning heat-transfer fluid to an inlet at a third pressure.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: January 29, 2013
    Assignee: Sustainx Inc.
    Inventors: Troy O. McBride, Benjamin R. Bollinger, Michael Neil Scott, Robert Cook, Patrick Magari
  • Patent number: 8356478
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: January 22, 2013
    Assignee: Lightsail Energy Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr.
  • Patent number: 8353156
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: January 15, 2013
    Assignee: Lightsail Energy Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr.
  • Publication number: 20120260645
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Application
    Filed: January 29, 2012
    Publication date: October 18, 2012
    Applicant: LightSail Energy Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, JR.
  • Patent number: 8245507
    Abstract: A hydraulic control device for moving at least one hydraulic consumer comprises at least one supply line, a discharge line or bypass line to which the hydraulic consumer is connected, and at least one pressure source and, optionally, a directional control valve. The line contains a dosing device for measuring a hydraulic medium dose by using a given compressibility of the hydraulic medium. The measured hydraulic medium dose either is supplied from the dosing device into the hydraulic consumer connected downstream or is discharged from the hydraulic consumer connected upstream into the dosing device. The dosing device comprises from upstream to downstream in series first and second blocking members which respectively can be switched into a leakage-free blocking position and into a through flow position, and a dead space between the blocking members. For dosing the hydraulic medium dose the blocking members are switched several times alternatingly.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: August 21, 2012
    Assignee: HAWE Hydraulik SE
    Inventors: Martin Heusser, Hilarius Hundschell, Sascha Rumenap
  • Patent number: 8196398
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: June 12, 2012
    Assignee: Lightsail Energy Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr.
  • Patent number: 8181456
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: May 22, 2012
    Assignee: Lightsail Energy, Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr.
  • Publication number: 20120042644
    Abstract: The invention relates to a mobile hydraulic system for a hybrid vehicle, comprising a hydraulic accumulator device (22), which comprises a high-pressure accumulator chamber (34) and a low-pressure accumulator chamber (35), between which a hydraulic drive unit is connected, wherein the hydraulic drive unit is used to convey an incompressible fluid from the low-pressure accumulator chamber (35) into the high-pressure accumulator chamber (34) in an accumulator operating state, wherein the incompressible fluid can be discharged from the high-pressure accumulator chamber into the low-pressure accumulator chamber (35) in a drive operating state in order to hydraulically drive the hydraulic drive unit.
    Type: Application
    Filed: January 25, 2010
    Publication date: February 23, 2012
    Applicant: ROBERT BOSCH GMBH
    Inventor: Bjoern Noack
  • Patent number: 8069661
    Abstract: A hydraulic control system for actuating at least one torque transmitting device in a transmission includes a sump, a pump in communication with the sump, and an accumulator. A first control device and a second control device control the communication of hydraulic fluid between the pump, the accumulator, and the torque transmitting device.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: December 6, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: James D. Hendrickson, Henryk Sowul, Brian W. Whitmarsh
  • Patent number: 8065874
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: November 29, 2011
    Assignee: Lightsale Energy, Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr., AmirHossein Pourmousa Abkenar, Kartikeya Mahalatkar, Yongxi Hou, Todd Bowers, Karl E. Stahlkopf
  • Patent number: 8065873
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: November 29, 2011
    Assignee: Lightsail Energy, Inc
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr.
  • Patent number: 8061132
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: November 22, 2011
    Assignee: Lightsail Energy, Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr., AmirHossein Pourmousa Abkenar, Kartikeya Mahalatkar, Yongxi Hou, Todd Bowers, Karl E. Stahlkopf
  • Patent number: 8037679
    Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: October 18, 2011
    Assignee: LightSail Energy, Inc.
    Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, Jr.
  • Patent number: 7905088
    Abstract: A hydraulic system has a valve assembly with two workports coupled to chambers of first and second cylinders which are connected mechanically in parallel to a machine component. A separation control valve is connected between first chambers of both cylinders, and a shunt control valve is connected between the workports. A recovery control valve couples an accumulator to the first chamber of the second cylinder. Opening and closing the valves in different combinations routes fluid from one or both cylinders into the accumulator where the fluid is stored under pressure, and thereafter enables stored fluid to be used to power one or both cylinders. The shunt control valve is used to route fluid exhausting from one chamber of each cylinder to the other chambers of those cylinders. Thus the hydraulic system recovers and reuses energy in various manners.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: March 15, 2011
    Assignee: INCOVA Technologies, Inc.
    Inventors: Dwight B. Stephenson, Eric P. Hamkins, Joseph L. Pfaff, Keith A. Tabor
  • Publication number: 20090320460
    Abstract: The invention provides methods and systems for starting auxiliary systems, comprising an auxiliary pump system having: a) a motorpump assembly having a constant displacement pump coupled to an electric motor; b) a hydraulic accumulator in fluid communication with said motorpump assembly; and c) lines to at least on auxiliary system in fluid communication with said motorpump assembly.
    Type: Application
    Filed: June 26, 2008
    Publication date: December 31, 2009
    Inventor: Robert Peterson
  • Patent number: 7591133
    Abstract: A block manifold for a fail safe actuator system allows the actuator operation with a hand pump if electrical power were not available. A method is available to isolate fail safe solenoid valves and an accumulator from a hand pump circuit to relieve the stored energy from the fail safe circuit. An additional set of pilot operated check valves were installed between the motor driven pump circuit and the hand pump circuit. These pilot operated check valves isolated the hand pump circuit from the fail safe dump solenoid and accumulator. These pilot actuated check valves also hold the actuator in the fail safe position as long as the hand pump system was not used. There is also a hydraulic bleed circuit to relieve the accumulator stored energy when the hand pump system was used.
    Type: Grant
    Filed: January 3, 2006
    Date of Patent: September 22, 2009
    Inventor: John J. Wright
  • Publication number: 20080141668
    Abstract: In an electrohydraulic drawing press drive, particularly an electrohydraulic drawing cushion drive including a hydraulic circuit with at least one motor which is operable as a drive motor or as a pump and at least one hydraulic pump which is operable as a pump or as a drive motor, an electric drive motor which is also operable as generator is connected to the hydraulic motor in order to drive the hydraulic motor or to be driven thereby and a control unit is provided for controlling at least one of the electric motor and the hydraulic pump.
    Type: Application
    Filed: December 1, 2007
    Publication date: June 19, 2008
    Inventor: Michael Micklisch
  • Patent number: 7143859
    Abstract: Construction machinery which is capable of improving fuel efficiency of the engine and also capable of effectively utilizing surplus energy in a light-load mode. The construction machinery includes an engine, a hydraulic pump driven by the engine, and actuators driven by oil pressure supplied from the hydraulic pump. In the light-load mode where the engine torque at the intersection point of an iso-horsepower curve of the necessary horsepower and a governor characteristic curve of the engine is smaller than that of a rated output point of the engine, the number of revolutions of the engine is reduced while the engine torque is increased with respect to the intersection point, and the horsepower is made to exceed the iso-horsepower curve. With surplus torque generated therefrom, a power generator is operated so as to generate electric power, which is stored in a power accumulation apparatus.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: December 5, 2006
    Assignee: Komatsu Ltd.
    Inventor: Naritoshi Ohtsukasa
  • Patent number: 6935107
    Abstract: Disclosed is an actuator system for positioning a piston within a cylinder and comprising a compressed air source, a positioner, and first and second pneumatic valving modules. The first and second pneumatic valving modules respectively comprise first and second volume boosters to amplify the flow of compressed air, first and second derivative boosters to alternately supply and exhaust compressed air into and out of the first and second ends at high flow rates, and first and second commutators to selectively allow the compressed air to flow respectively between the volume boosters and the derivative boosters. A safety valve opens at a predetermined pressurization level such that the first and second commutators may be energized. A volume tank provides compressed air to each one of the first and second pneumatic valving modules upon energization of the first and second commutators.
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: August 30, 2005
    Assignee: Control Components, Inc.
    Inventor: Flavio Tondolo
  • Patent number: 6862972
    Abstract: A reciprocating drive system that utilizes energy available from pressure changes in flowing fluid systems, said drive used for the injection of additives into pipelines. The reciprocating drive includes a hydraulic accumulator having a gas chamber connected to a gas pipeline to contain said gas, whereby variation in the elevated pressure of the pipeline is reflected in the pressure applied to an incompressible fluid in a hydraulic conduit. The drive is capable of recycling gas used to drive the system back into pipelines.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: March 8, 2005
    Inventor: James Morrison
  • Patent number: 6854269
    Abstract: A method is provided for attenuating noise in a hydraulic circuit having a pump in fluid communication with a hydraulic actuator by a conduit. The method includes supplying a flow restricting device in the conduit and generating a signal representative of a fluid fluctuation in the conduit downstream of the flow restricting device. A bypass loop is provided in parallel with the flow restricting device and the bypass has a valve. The valve is controlled based on the generated signal to generate a corrective fluid flow to attenuate the noise.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: February 15, 2005
    Assignee: Caterpillar Inc.
    Inventor: David C. Hale
  • Patent number: 6817175
    Abstract: The invention relates to a hydraulic steering system architecture comprising at least one steering control actuator having chambers connected to the outlets of a directional-control valve, an accumulator, and an electrically-driven pump unit associated with an emergency supply. The hydraulic system also comprises a general selector arranged, in a normal mode of operation, to connect the feed port of the directional-control valve to a pressure-generator device and the return port of the directional-control valve to a main supply associated with the pressure-generator device, while also ensuring that the emergency supply is filled, and in an alternate mode of operation, to connect the feed port of the directional-control valve to the accumulator.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: November 16, 2004
    Assignee: Messiner-Bugatti
    Inventors: Olivier Collet, Emmanuel Dorget, Claire Patrigeon, Daniel Bucheton
  • Patent number: 6725581
    Abstract: Compact, low-cost construction equipment capable of effectively recovering energy from a plurality of hydraulic actuators is provided. To this end, the construction equipment comprises: a hydraulic recovery circuit for recovering return oil from the hydraulic actuators, the circuit being equipped with a pump motor rotatably driven by the recovered return oil; oil guide passages each of which is for guiding return oil from the meter-out side of its corresponding hydraulic actuator to the hydraulic recovery circuit; switches for switching the respective oil guide passages between their opened and closed states; pressure sensors for detecting the back pressure of each hydraulic pressure actuator; and a dynamo-electric generator for generating electric power from the rotary force of the pump motor.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: April 27, 2004
    Assignee: Komatsu Ltd.
    Inventors: Masami Naruse, Naritoshi Ohtsukasa, Junsei Tanaka, Seiya Haga
  • Publication number: 20020053206
    Abstract: In a braking pressure intensifying master cylinder of the present invention, as an input shaft 53 travels forwards in a braking maneuver, a control valve 54 is actuated to develop fluid pressure according to the input in a reaction chamber 38 and a pressurized chamber 35. A stepped spool 45 as a part of the control valve 54 travels such that force produced by the fluid pressure and spring force of a spring 51 are balanced, whereby the stepped spool 45 can function as a travel simulator. By changing the pressure receiving areas of the stepped spool 45 and/or changing the spring force of the spring 51, the travel characteristic of the input shaft 53 as the input side can be freely changed independently from the output side, without influence on MCY pressure as the output side of the braking pressure intensifying MCY 1. In addition, the master cylinder pressure can be intensified when necessary with a simple structure.
    Type: Application
    Filed: April 26, 2001
    Publication date: May 9, 2002
    Applicant: BOSCH BRAKING SYSTEMS CO., LTD.
    Inventors: Hiroyuki Oka, Michio Kobayashi, Masahiro Shimada, Mamoru Sawada, Kazuya Maki, Hiroaki Niino
  • Patent number: 6378301
    Abstract: Energy of returning pressurized fluid of an actuator is recovered and reused as energy for operating other accumulators. A first pump motor (16) and a second pump motor (17) are mechanically connected to form a pressure converter (18), and a first circuit (22), to which the returning pressurized fluid is supplied, is connected to the first pump motor (16). A pressure accumulator (27) is provided to a second circuit (25) connected to the second pump motor (17). The first circuit (22) is connected to a discharge passage (11) of a primary hydraulic pump (10) by a third circuit (29) and the pressure of a high pressure pressurized fluid is supplied to the discharge passage (11) by the pressure of the high pressure pressurized fluid, and is reused.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: April 30, 2002
    Assignee: Komatsu Ltd.
    Inventors: Hiroshi Endo, Nobumi Yoshida, Kazuhiro Muruta
  • Patent number: 6370874
    Abstract: A hydraulic control arrangement for a mobile working machine has at least one hydraulic cylinder with the aid of which a working tool is moved, a directional control valve for controlling pressure-fluid channels between chambers of the hydraulic cylinder, a pressure-fluid source and a tank, a hydraulic accumulator connected to the pressure-fluid source via a filling line, and a control valve to open and to close a connection between the hydraulic accumulator and a pressure chamber of the hydraulic cylinder. To achieve a damping of pitching movement of the machine, a pilot-operated shutoff valve is connected upstream of the pressure chamber of the hydraulic cylinder, and opens when the directional control valve is actuated to allow pressure fluid to flow off from the pressure chamber to the tank.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: April 16, 2002
    Assignee: Mannesmann Rexroth AG
    Inventors: Georg Rausch, Dieter Roth
  • Patent number: 6311714
    Abstract: A fluid path opening/closing valve comprises a plate-like valve plug and a rack which is fixed to a piston of an emergency shut-down air cylinder. The rack meshes with a pinion which rotates by a reversible motor with a clutch. If a seismic detecting valve detects earthquake which has over predetermined seismic intensity and opens, compressed air is sent from an air tank via the opened seismic detecting valve to a switching cylinder which disconnects the clutch. At the same time, compressed air is sent from the air tank to the emergency shut-down air cylinder via a delay valve to lower the piston with the fluid-path opening/closing valve which closes the fluid path.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: November 6, 2001
    Assignee: Nichigi Engineering Co., Ltd.
    Inventor: Susumu Watanabe
  • Patent number: 6073441
    Abstract: A pneumatic piston-cylinder apparatus of single acting type which performs a working stroke in one working direction, and is returned to its initial position without any external supply of compressed air comprising a cylinder part with cylinder jacket (1), a front end (2), a rear end (3), and a piston (5) which is reciprocatable in the cylinder. Connected to the rear end (3) is a supply of compressed air and within the cylinder is a return channel (10) used for draining the air on the unloading side of the piston.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: June 13, 2000
    Assignee: Pos-Line AB
    Inventor: Bert Harju