Patents by Inventor Scott H. Wittkopp
Scott H. Wittkopp 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: 8251856Abstract: A transmission of the present invention has an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes. The torque transmitting devices are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio.Type: GrantFiled: January 15, 2010Date of Patent: August 28, 2012Assignee: GM Global Technology Operations LLCInventors: Andrew W. Phillips, James M. Hart, Scott H. Wittkopp, Clinton E. Carey
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Publication number: 20120214638Abstract: A front wheel drive 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. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and brakes arranged within a transmission housing. Each of the clutches and brakes are located within specific areas defined by the planetary gear sets and the housing walls.Type: ApplicationFiled: January 27, 2012Publication date: August 23, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: James M. Hart, Scott H. Wittkopp
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Publication number: 20120214637Abstract: A rear wheel drive 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. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and brakes arranged within a transmission housing. Each of the clutches and brakes are located within specific areas defined by the planetary gear sets and the housing walls.Type: ApplicationFiled: January 27, 2012Publication date: August 23, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: James M. Hart, Scott H. Wittkopp
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Publication number: 20120214635Abstract: A transmission includes an input and output member, four planetary gear sets each having first, second and third members, five interconnecting members continuously interconnecting members of the four planetary gear sets and six torque transmitting mechanisms selectively engageable to interconnect one of the first members, second members, and third members with at least one of another of the first members, second members, third members, and a stationary member. The torque transmitting mechanisms are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.Type: ApplicationFiled: November 30, 2011Publication date: August 23, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Edward W. Mellet, James M. Hart, Andrew W. Phillips, Scott H. Wittkopp
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Patent number: 8240224Abstract: A transmission is connectable to an input member and includes an output member, first and second shafts, first and second countershafts, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.Type: GrantFiled: March 10, 2010Date of Patent: August 14, 2012Assignee: GM Global Technology Operations LLCInventors: Edward W. Mellet, Craig S. Ross, Scott H. Wittkopp
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Patent number: 8241169Abstract: An automatic 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. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may be either clutches or brakes.Type: GrantFiled: August 4, 2011Date of Patent: August 14, 2012Assignee: GM Global Technology Operations LLCInventors: Andrew W. Phillips, James M. Hart, Scott H. Wittkopp, Clinton E. Carey, Madhusudan Raghavan
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Patent number: 8241167Abstract: A front wheel drive transmission is provided having a transmission input member, a transmission output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and a brake arranged within a transmission housing.Type: GrantFiled: January 27, 2009Date of Patent: August 14, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
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Patent number: 8240443Abstract: A powertrain is provided that has an engine and a torque converter. The engine is configured to provide oil to the torque converter for operation of the torque converter. The engine oil may provide both the fluid coupling and torque converter clutch apply and release functions.Type: GrantFiled: November 11, 2008Date of Patent: August 14, 2012Assignee: GM Global Technology Operations LLCInventors: Hamid Vahabzadeh, Scott H. Wittkopp, Edwin T. Grochowski
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Patent number: 8241168Abstract: An automatic 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. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may be either clutches or brakes.Type: GrantFiled: August 4, 2011Date of Patent: August 14, 2012Assignee: GM Global Technology Operations LLCInventors: Andrew W. Phillips, James M. Hart, Scott H. Wittkopp, Clinton E. Carey, Madhusudan Raghavan
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Publication number: 20120202638Abstract: 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. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes and are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.Type: ApplicationFiled: April 16, 2012Publication date: August 9, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Andrew W. Phillips, Scott H. Wittkopp, Clinton E. Carey, James M. Hart
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Publication number: 20120202639Abstract: A transmission of the present invention has an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes. The torque transmitting devices are selectively engageable in combinations of at least three to establish at least ten forward speed ratios and at least one reverse speed ratio.Type: ApplicationFiled: April 19, 2012Publication date: August 9, 2012Applicant: GM Global Technology Operations LLCInventors: Scott H. Wittkopp, James M. Hart, Clinton E. Carey, Andrew W. Phillips
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Publication number: 20120202637Abstract: An eight speed automatic transmission is provided having an input member, an output member, four planetary gear sets and five torque transmitting devices. Three of the planetary gear sets are simple and one planetary gear set is compound. Each of the plurality of planetary gear sets has first, second and third members: a sun gear, a ring gear and a planet carrier having a plurality of planet gears rotatably disposed thereon. Three of the torque transmitting devices are clutches and two of the devices are brakes. Eight embodiments of the transmission having different arrangements of the planetary gear sets, clutches and brakes are disclosed.Type: ApplicationFiled: April 16, 2012Publication date: August 9, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Clinton E. Carey, James M. Hart, Andrew W. Phillips, Scott H. Wittkopp
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Publication number: 20120196718Abstract: An automatic transmission includes an input shaft, an output shaft and four planetary gear assemblies each having a first, a second and a third element. The automatic transmission includes six fixed or rigid interconnections: one from a third element of the second planetary gear assembly to a second element of the fourth planetary gear assembly, one from a second element of the third planetary gear assembly to the second element of the fourth planetary gear assembly, one from a third element of the first planetary gear assembly to a second element of the second planetary gear assembly, one from a third element of the third planetary gear assembly to a first element of the fourth planetary gear assembly and one from an element of the second planetary gear assembly to an element of the first planetary gear assembly. The automatic transmission also includes four clutches and three brakes which may be selectively engaged to provide nine, ten or eleven speed transmission operation.Type: ApplicationFiled: January 31, 2011Publication date: August 2, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: James M. Hart, Scott H. Wittkopp, Bret M. Olson
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Patent number: 8231498Abstract: An eight speed automatic transmission is provided having an input member, an output member, four planetary gear sets and five torque transmitting devices. Three of the planetary gear sets are simple and one planetary gear set is compound. Each of the plurality of planetary gear sets has first, second and third members: a sun gear, a ring gear and a planet carrier having a plurality of planet gears rotatably disposed thereon. Three of the torque transmitting devices are clutches and two of the devices are brakes. Eight embodiments of the transmission having different arrangements of the planetary gear sets, clutches and brakes are disclosed.Type: GrantFiled: June 15, 2011Date of Patent: July 31, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, James M. Hart, Andrew W. Phillips, Scott H. Wittkopp
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Patent number: 8231499Abstract: An eight speed automatic transmission is provided having an input member, an output member, four planetary gear sets and five torque transmitting devices. Three of the planetary gear sets are simple and one planetary gear set is compound. Each of the plurality of planetary gear sets has first, second and third members: a sun gear, a ring gear and a planet carrier having a plurality of planet gears rotatably disposed thereon. Three of the torque transmitting devices are clutches and two of the devices are brakes. Eight embodiments of the transmission having different arrangements of the planetary gear sets, clutches and brakes are disclosed.Type: GrantFiled: June 15, 2011Date of Patent: July 31, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, James M. Hart, Andrew W. Phillips, Scott H. Wittkopp
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Patent number: 8231500Abstract: An eight speed automatic transmission is provided having an input member, an output member, four planetary gear sets and five torque transmitting devices. Three of the planetary gear sets are simple and one planetary gear set is compound. Each of the plurality of planetary gear sets has first, second and third members: a sun gear, a ring gear and a planet carrier having a plurality of planet gears rotatably disposed thereon. Three of the torque transmitting devices are clutches and two of the devices are brakes. Eight embodiments of the transmission having different arrangements of the planetary gear sets, clutches and brakes are disclosed.Type: GrantFiled: June 15, 2011Date of Patent: July 31, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, James M. Hart, Andrew W. Phillips, Scott H. Wittkopp
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Patent number: 8231497Abstract: An eight speed automatic transmission is provided having an input member, an output member, four planetary gear sets and five torque transmitting devices. Three of the planetary gear sets are simple and one planetary gear set is compound. Each of the plurality of planetary gear sets has first, second and third members: a sun gear, a ring gear and a planet carrier having a plurality of planet gears rotatably disposed thereon. Three of the torque transmitting devices are clutches and two of the devices are brakes. Eight embodiments of the transmission having different arrangements of the planetary gear sets, clutches and brakes are disclosed.Type: GrantFiled: June 15, 2011Date of Patent: July 31, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, James M. Hart, Andrew W. Phillips, Scott H. Wittkopp
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Patent number: 8226521Abstract: An automatic 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. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may be either clutches or brakes. The torque transmitting devices are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.Type: GrantFiled: June 13, 2011Date of Patent: July 24, 2012Assignee: GM Global Technology Operations LLCInventors: Scott H. Wittkopp, James M. Hart, Andrew W. Phillips, Clinton E. Carey
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Patent number: 8226512Abstract: The hybrid transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The hybrid transmission includes a motor/generator, three planetary gear sets, five torque-transmitting devices, three external gear sets and a final drive gear set. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with one of the external gear sets. The five torque-transmitting devices provide interconnections between various planetary and external gear members, the input shaft, and the transmission housing, and are operated in combinations of three to establish eight forward speed ratios and one reverse speed ratio.Type: GrantFiled: March 25, 2009Date of Patent: July 24, 2012Assignee: GM Global Technology Operations LLCInventors: Scott H. Wittkopp, James M. Hart, James B. Borgerson
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Patent number: 8226514Abstract: Various embodiments of electrically-variable transmissions are provided that have two motor-generators, two planetary gear sets, and two torque-transmitting mechanisms, including a rotating-type clutch and a stationary-type clutch. An input member is connected for common rotation with a ring gear of the first planetary gear set. Carriers of both of the planetary gear sets are connected for common rotation with one another, and with an output member. The first motor/generator is connected for common rotation with the sun gear of the first planetary gear set. The second motor/generator is connected for common rotation with the sun gear member of the second planetary gear set. A drive transfer assembly transfers torque from components establishing the first axis of rotation to components establishing the second axis of rotation.Type: GrantFiled: May 12, 2009Date of Patent: July 24, 2012Assignee: GM Global Technology Operations LLCInventors: Edwin T. Grochowski, Scott H. Wittkopp, James B. Borgerson, James M. Hart