Patents by Inventor Gang Victor WEN
Gang Victor WEN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9387759Abstract: A main valve and method assembling for use on a machine is disclosed. The main valve may comprise a body, a free wheeling valve, a bypass valve, a flow divider valve, a free wheeling pilot valve, and a flow divider bypass pilot control valve. Each valve may be disposed inside the body. The body may define a plurality of ports and channels between the valves. The free wheeling valve may be operable between a free wheeling mode and a drive assist mode. The bypass valve may have a flow dividing mode that permits fluid communication between the free wheeling valve and the flow divider valve, and a bypass mode that permits fluid communication between the free wheeling valve and first and second bypass channels.Type: GrantFiled: September 22, 2014Date of Patent: July 12, 2016Assignee: Caterpillar Inc.Inventors: Gang Victor Wen, Sudarshan Maiyur, Moses Imo Akpan
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Publication number: 20160082828Abstract: A main valve and method assembling for use on a machine is disclosed. The main valve may comprise a body, a free wheeling valve, a bypass valve, a flow divider valve, a free wheeling pilot valve, and a flow divider bypass pilot control valve. Each valve may be disposed inside the body. The body may define a plurality of ports and channels between the valves. The free wheeling valve may be operable between a free wheeling mode and a drive assist mode. The bypass valve may have a flow dividing mode that permits fluid communication between the free wheeling valve and the flow divider valve, and a bypass mode that permits fluid communication between the free wheeling valve and first and second bypass channels.Type: ApplicationFiled: September 22, 2014Publication date: March 24, 2016Applicant: CATERPILLAR INC.Inventors: Gang Victor Wen, Sudarshan Maiyur, Moses Imo Akpan
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Patent number: 9290911Abstract: An energy recovery system is disclosed for use with a hydraulic machine. The energy recovery system may have a tank, a pump configured to draw fluid from the tank and pressurize the fluid, an actuator, and an actuator control valve movable to direct pressurized fluid from the pump to the actuator and from the actuator to the tank to move the actuator. The energy recovery system may also have a motor mechanically connected to a rotary device and configured to selectively receive fluid discharged from the actuator, and at least one valve movable to selectively redirect fluid exiting the motor back to the actuator.Type: GrantFiled: February 19, 2013Date of Patent: March 22, 2016Assignee: Caterpillar Inc.Inventors: Pengfei Ma, Tonglin Shang, Jiao Zhang, Dayao Chen, Gang Victor Wen
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Patent number: 9290912Abstract: An energy recovery system for a machine is disclosed. The energy recovery system may have a boom circuit with at least a one linear actuator configured to move a work tool, and a boom accumulator configured to selectively collect pressurized fluid from the at least one linear actuator and to discharge pressurized fluid back to the at least one linear actuator. The energy recovery system may also have a swing circuit with a swing motor configured to move the work tool, and a swing accumulator configured to selectively collect pressurized fluid from the swing motor and discharge pressurized fluid back to the swing motor. The energy recovery system may further have a common accumulator passage fluidly connecting the boom accumulator and the swing accumulator.Type: GrantFiled: October 31, 2012Date of Patent: March 22, 2016Assignee: Caterpillar Inc.Inventors: Gang Victor Wen, Pengfei Ma, Jiao Zhang, Tonglin Shang
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Patent number: 9279236Abstract: A hydraulic system includes a hydraulic actuator, a pump configured to supply fluid to the hydraulic actuator, and a first accumulator fluidly connected to the hydraulic actuator. The first accumulator is configured to store fluid received from the hydraulic actuator. The hydraulic system also includes a motor drivingly connected to the pump and fluidly connected to the first accumulator. The motor is configured to receive the stored fluid from the first accumulator to drive the pump. The hydraulic system further includes a first discharge valve fluidly connected between the first accumulator and the hydraulic actuator. The first discharge valve is configured to supply the stored fluid from the first accumulator to the hydraulic actuator without the stored fluid from the first accumulator circulating through the pump.Type: GrantFiled: June 4, 2012Date of Patent: March 8, 2016Assignee: Caterpillar Inc.Inventors: Jiao Zhang, Pengfei Ma, Tonglin Shang, Gang Victor Wen, Bryan Edward Nelson, Dayao Chen
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Patent number: 8997479Abstract: A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a pump, a tank, and an actuator. The hydraulic control system may also have at least a first valve configured to control fluid flow between the pump, the tank, a first chamber of the actuator, and a second chamber of the actuator; a second valve fluidly disposed between the second chamber and the tank; and a third valve fluidly disposed between the first and second chambers. The hydraulic control system may further have a controller configured to selectively cause the second valve to block fluid flow from the second chamber of the actuator to the tank, and to selectively cause the third valve to fluidly communicate the first and second chambers of the actuator when the second valve blocks fluid flow from the second chamber of the actuator to the tank.Type: GrantFiled: April 27, 2012Date of Patent: April 7, 2015Assignee: Caterpillar Inc.Inventors: Gang Victor Wen, Jiao Zhang, Pengfei Ma, Tonglin Shang
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Publication number: 20140230420Abstract: An energy recovery system is disclosed for use with a hydraulic machine. The energy recovery system may have a tank, a pump configured to draw fluid from the tank and pressurize the fluid, an actuator, and an actuator control valve movable to direct pressurized fluid from the pump to the actuator and from the actuator to the tank to move the actuator. The energy recovery system may also have a motor mechanically connected to a rotary device and configured to selectively receive fluid discharged from the actuator, and at least one valve movable to selectively redirect fluid exiting the motor back to the actuator.Type: ApplicationFiled: February 19, 2013Publication date: August 21, 2014Applicant: CATERPILLAR INC.Inventors: Pengfei MA, Tonglin SHANG, Jiao ZHANG, Dayao CHEN, Gang Victor WEN
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Publication number: 20140119868Abstract: An energy recovery system for a machine is disclosed. The energy recovery system may have a tank, a pump configured to draw fluid from the tank and pressurize the fluid, an actuator, and an actuator control valve movable to direct pressurized fluid from the pump to the actuator and from the actuator to the tank to move the actuator. The energy recovery system may also have a motor connected to selectively receive fluid discharged from the actuator and mechanically connected to the pump, and an accumulator configured to store fluid discharged from the motor and to direct stored fluid to the motor to drive the pump.Type: ApplicationFiled: October 31, 2012Publication date: May 1, 2014Applicant: CATERPILLAR INC.Inventors: Gang Victor WEN, Pengfei MA, Jiao ZHANG, Tonglin SHANG
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Publication number: 20140119867Abstract: An energy recovery system for a machine is disclosed. The energy recovery system may have a boom circuit with at least a one linear actuator configured to move a work tool, and a boom accumulator configured to selectively collect pressurized fluid from the at least one linear actuator and to discharge pressurized fluid back to the at least one linear actuator. The energy recovery system may also have a swing circuit with a swing motor configured to move the work tool, and a swing accumulator configured to selectively collect pressurized fluid from the swing motor and discharge pressurized fluid back to the swing motor. The energy recovery system may further have a common accumulator passage fluidly connecting the boom accumulator and the swing accumulator.Type: ApplicationFiled: October 31, 2012Publication date: May 1, 2014Applicant: CATERPILLAR INC.Inventors: Gang Victor WEN, Pengfei MA, Jiao ZHANG, Tonglin SHANG
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Publication number: 20140026546Abstract: A regeneration valve for a hydraulic circuit may include a valve element for controlling flow between first, second, and third ports. The valve element may be formed with a flow slot that generates a slot flow force when hydraulic fluid flows therethrough. The flow slot may be configured so that a predetermined fluid low rate may generate a slot flow force sufficient to actuate the valve element from a first position to a second position. In the second position, the valve element may divert a portion of flow from the second port to the first port is diverted to the third port. The flow slot may be configured so that the fluid exits the slot at an exit angle that varies as the valve element moves between first and second positions, thereby to provide a more uniform flow force across the range of travel of the valve element.Type: ApplicationFiled: July 25, 2012Publication date: January 30, 2014Applicant: CATERPILLAR, INC.Inventors: Kevin A. Bacon, Gang Victor Wen, Wesley Thomas Payne
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Publication number: 20130340418Abstract: An energy storage system is disclosed for use in a hydraulic system for moving a structural member such as a boom assembly. The system features at least one work cylinder and an additional energy storage cylinder that assists in raising and lowering functions by storing and withdrawing pressurized fluid from an accumulator. The pressurized fluid in the accumulator may be used for raising operations as well as digging and tamping operations. Further, the energy recovery features may be selectively disconnected during either a raising or lowering operation.Type: ApplicationFiled: June 21, 2012Publication date: December 26, 2013Applicant: CATERPILLAR, INC.Inventors: Gang Victor Wen, Pengfei Ma, Jiao Zhang
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Publication number: 20130318955Abstract: A hydraulic system includes a hydraulic actuator, a pump configured to supply fluid to the hydraulic actuator, and a first accumulator fluidly connected to the hydraulic actuator. The first accumulator is configured to store fluid received from the hydraulic actuator. The hydraulic system also includes a motor drivingly connected to the pump and fluidly connected to the first accumulator. The motor is configured to receive the stored fluid from the first accumulator to drive the pump. The hydraulic system further includes a first discharge valve fluidly connected between the first accumulator and the hydraulic actuator. The first discharge valve is configured to supply the stored fluid from the first accumulator to the hydraulic actuator without the stored fluid from the first accumulator circulating through the pump.Type: ApplicationFiled: June 4, 2012Publication date: December 5, 2013Inventors: Jiao ZHANG, Pengfei Ma, Tonglin Shang, Gang Victor Wen, Bryan Edward Nelson, Dayao Chen
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Publication number: 20130283777Abstract: A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a pump, a tank, and an actuator. The hydraulic control system may also have at least a first valve configured to control fluid flow between the pump, the tank, a first chamber of the actuator, and a second chamber of the actuator; a second valve fluidly disposed between the second chamber and the tank; and a third valve fluidly disposed between the first and second chambers. The hydraulic control system may further have a controller configured to selectively cause the second valve to block fluid flow from the second chamber of the actuator to the tank, and to selectively cause the third valve to fluidly communicate the first and second chambers of the actuator when the second valve blocks fluid flow from the second chamber of the actuator to the tank.Type: ApplicationFiled: April 27, 2012Publication date: October 31, 2013Inventors: Gang Victor WEN, Jiao Zhang, Pengfei Ma, Tonglin Shang