Patents by Inventor Douglas John Dwenger
Douglas John Dwenger 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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Publication number: 20130157797Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque-transmitting devices. Further, a hydraulic fluid control circuit is provided for controlling the operation of the plurality of torque-transmitting devices. The hydraulic fluid control circuit receives pressurized hydraulic fluid from a hydraulic fluid pump and has a plurality of fluid passages disposed in the transmission housing, input member and other coupling members.Type: ApplicationFiled: December 14, 2011Publication date: June 20, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: John A. Diemer, Douglas John Dwenger
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Patent number: 8409050Abstract: A gear retention assembly for retaining a gear that has a plurality of gear outer splines includes a gear housing and a retaining ring. The gear housing has a first end, a second end, and a plurality of inner splines each including a ramp portion. The second end of the gear housing includes an annular continuous rolled lip, where the continuous rolled lip and the ramp portions of the plurality of inner splines define a groove. The plurality of inner splines engage with the gear outer splines of the gear to transmit torque between the gear and the gear housing. The retaining ring is disposed in the groove and axially retains the gear. The rolled lip axially retains the retaining ring.Type: GrantFiled: November 11, 2009Date of Patent: April 2, 2013Assignee: GM Global Technology Operations LLCInventors: Scott William Heitzenrater, Boris Burgman, Douglas John Dwenger, John A. Diemer, Randal William Arndt
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Patent number: 8376900Abstract: A clutch assembly for transmitting a first torque between a first member and a second member includes a first clutch and a second clutch. The first clutch is disposed between the first member and the second member and has a predetermined design torque. The second clutch is disposed in series with the first clutch between the first member and the second member and has a predetermined holding torque that is less than the predetermined design torque. The second clutch allows rotation between the first member and the second member when the first torque is greater than the predetermined holding torque.Type: GrantFiled: December 17, 2009Date of Patent: February 19, 2013Assignee: GM Global Technology Operations LLCInventors: Scott William Heitzenrater, John A. Diemer, Douglas John Dwenger, Larry D. Diemer
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Publication number: 20120322604Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque-transmitting devices. Further, a hydraulic fluid control circuit is provided for controlling the operation of the plurality of torque-transmitting devices. The hydraulic fluid control circuit receives pressurized hydraulic fluid from an off-axis hydraulic fluid pump and has a plurality of fluid passages disposed in the transmission house, input member and other coupling members.Type: ApplicationFiled: August 28, 2012Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Patrick S. Portell, John A. Diemer, James M. Hart, Scott H. Wittkopp, Edwin T. Grochowski, Douglas John Dwenger, Elizabeth I. Wooden, Boris Burgman, Clinton E. Carey, Tejnder Singh
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Patent number: 8262526Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque-transmitting devices. Further, a hydraulic fluid control circuit is provided for controlling the operation of the plurality of torque-transmitting devices. The hydraulic fluid control circuit receives pressurized hydraulic fluid from an off-axis hydraulic fluid pump and has a plurality of fluid passages disposed in the transmission house, input member and other coupling members.Type: GrantFiled: January 30, 2012Date of Patent: September 11, 2012Assignee: GM Global Technology Operations LLCInventors: Patrick S. Portell, John A. Diemer, James M. Hart, Scott H. Wittkopp, Edwin T. Grochowski, Douglas John Dwenger, Elizabeth I. Wooden, Boris Burgman, Clinton E. Carey, Tejinder Singh
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Publication number: 20120129640Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque-transmitting devices. Further, a hydraulic fluid control circuit is provided for controlling the operation of the plurality of torque-transmitting devices. The hydraulic fluid control circuit receives pressurized hydraulic fluid from an off-axis hydraulic fluid pump and has a plurality of fluid passages disposed in the transmission house, input member and other coupling members.Type: ApplicationFiled: January 30, 2012Publication date: May 24, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Patrick S. Portell, John A. Diemer, James M. Hart, Scott H. Wittkopp, Edwin T. Grochowski, Douglas John Dwenger, Elizabeth I. Wooden, Boris Burgman, Clinton E. Carey, Tejinder Singh
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Patent number: 8105196Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque-transmitting devices. Further, a hydraulic fluid control circuit is provided for controlling the operation of the plurality of torque-transmitting devices. The hydraulic fluid control circuit receives pressurized hydraulic fluid from an off-axis hydraulic fluid pump and has a plurality of fluid passages disposed in the transmission house, input member and other coupling members.Type: GrantFiled: May 1, 2009Date of Patent: January 31, 2012Assignee: GM Global Technology Operations LLCInventors: Patrick S. Portell, John A. Diemer, James M. Hart, Scott H. Wittkopp, Edwin T. Grochowski, Douglas John Dwenger, Elizabeth I. Wooden, Boris Burgman, Clinton E. Carey, Tejinder Singh
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Publication number: 20110147155Abstract: A clutch assembly for transmitting a first torque between a first member and a second member includes a first clutch and a second clutch. The first clutch is disposed between the first member and the second member and has a predetermined design torque. The second clutch is disposed in series with the first clutch between the first member and the second member and has a predetermined holding torque that is less than the predetermined design torque. The second clutch allows rotation between the first member and the second member when the first torque is greater than the predetermined holding torque.Type: ApplicationFiled: December 17, 2009Publication date: June 23, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: SCOTT WILLIAM HEITZENRATER, JOHN A. DIEMER, DOUGLAS JOHN DWENGER, LARRY D. DIEMER
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Publication number: 20110111917Abstract: A gear retention assembly for retaining a gear that has a plurality of gear outer splines includes a gear housing and a retaining ring. The gear housing has a first end, a second end, and a plurality of inner splines each including a ramp portion. The second end of the gear housing includes an annular continuous rolled lip, where the continuous rolled lip and the ramp portions of the plurality of inner splines define a groove. The plurality of inner splines engage with the gear outer splines of the gear to transmit torque between the gear and the gear housing. The retaining ring is disposed in the groove and axially retains the gear. The rolled lip axially retains the retaining ring.Type: ApplicationFiled: November 11, 2009Publication date: May 12, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Scott William Heitzenrater, Boris Burgman, Douglas John Dwenger, John A. Diemer, Randall William Arndt
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Publication number: 20110100157Abstract: A transmission includes a housing defining a sealed interior and an input hub rotatably coupled to the housing. A gear set is disposed within the housing and configured for receiving a torque from an engine. The transmission further includes an isolator assembly and a bypass clutch, each disposed within the sealed interior of the housing. The isolator assembly is configured for selectively damping drivetrain inertia and/or vibration. The bypass clutch selectively engages and disengages the isolator assembly.Type: ApplicationFiled: October 30, 2009Publication date: May 5, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Victor M. Roses, John A. Diemer, Randy Lewis Melanson, Douglas John Dwenger, Randal William Arndt, Pete R. Garcia, Michael L. Duhaime
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Publication number: 20110088796Abstract: An integrated control valve body and hydraulic pump for an automatic transmission provides improved efficiency and space utilization. The invention includes a control valve body having a plurality of control valves and passageways and an internal cavity having an inlet and an outlet, a pump rotor received within the internal cavity and having a plurality of radially and axially extending slots, radially moveable vanes and a shaft, and means for transferring drive energy from a drive shaft extending between an output of a torque converter and an input of the transmission to the shaft of the hydraulic pump. The means for transferring drive energy may be a pair of chain sprockets and a chain, a pair of spur or helical gears or other inter-axis power transfer components and may effect a speed increase or reduction.Type: ApplicationFiled: October 21, 2009Publication date: April 21, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Michael P. Fannin, John A. Diemer, Douglas John Dwenger, Brian W. Whitmarsh
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Publication number: 20100279811Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque-transmitting devices. Further, a hydraulic fluid control circuit is provided for controlling the operation of the plurality of torque-transmitting devices. The hydraulic fluid control circuit receives pressurized hydraulic fluid from an off-axis hydraulic fluid pump and has a plurality of fluid passages disposed in the transmission house, input member and other coupling members.Type: ApplicationFiled: May 1, 2009Publication date: November 4, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Patrick S. Portell, John A. Diemer, James M. Hart, Scott H. Wittkopp, Edwin T. Grochowski, Douglas John Dwenger, Elizabeth I. Wooden, Boris Burgman, Clinton E. Carey, Tejinder Singh
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Patent number: 7703346Abstract: A transmission is provided having a dual clutch and a countershaft gearing arrangement. The countershaft gearing arrangement includes a plurality of co-planar gears sets having gears that are selectively connectable to at least two countershafts. Moreover, one of the gears of the plurality of co-planar gears sets that provides a reverse gear ratio is selectively connectable to a first countershaft and is in mesh with only one other gear of the plurality of co-planar gears sets that is selectively engagable to a second countershaft.Type: GrantFiled: February 22, 2007Date of Patent: April 27, 2010Assignee: GM Global Technology Operations, Inc.Inventors: James D. Hendrickson, John A. Diemer, Douglas John Dwenger
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Publication number: 20080202265Abstract: A transmission is provided having a dual clutch and a countershaft gearing arrangement. The countershaft gearing arrangement includes a plurality of co-planar gears sets having gears that are selectively connectable to at least two countershafts. Moreover, one of the gears of the plurality of co-planar gears sets that provides a reverse gear ratio is selectively connectable to a first countershaft and is in mesh with only one other gear of the plurality of co-planar gears sets that is selectively engagable to a second countershaft.Type: ApplicationFiled: February 22, 2007Publication date: August 28, 2008Inventors: James D. Hendrickson, John A. Diemer, Douglas John Dwenger