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: 8943917Abstract: A manual transmission includes an input member, an output member, a transmission input shaft, a countershaft, a reverse shaft, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies. 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: October 20, 2010Date of Patent: February 3, 2015Assignee: GM Global Technology Operations, LLCInventors: James B. Borgerson, Scott H. Wittkopp
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ELECTRICALLY ACTUATED ROTATING BAND TORQUE TRANSMITTING MECHANISM FOR HYBRID AND OTHER TRANSMISSIONS
Publication number: 20150014115Abstract: A torque transmitting mechanism includes a drum attached to one of a first member and a second member, and a shell attached to another of the first member and the second member. The drum and the shell are concentrically disposed about a longitudinal axis, with the shell concentrically disposed about the drum. An electric motor includes a stator, and a first rotor rotatable about the longitudinal axis relative to the stator. A band is coupled to the shell, wrapped around the drum between four and twelve complete revolutions, and includes a first end attached to the first rotor for rotation with the first rotor. The band includes a second end attached to a reaction member. Rotation of the first rotor tightens the band against the drum to bias the drum against the shell, to transmit torque between the first member and the second member.Type: ApplicationFiled: July 11, 2013Publication date: January 15, 2015Inventors: Alan G. Holmes, Anthony L. Smith, Scott H. Wittkopp, Anthony J. Corsetti, Scott William Heitzenrater -
Patent number: 8932174Abstract: 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: GrantFiled: January 27, 2012Date of Patent: January 13, 2015Assignee: GM Global Technology Operations, LLCInventors: James M. Hart, Scott H. Wittkopp
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Patent number: 8932175Abstract: A transmission is provided having an input member, an output member, at least 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 include clutches and a brake actuatable in combinations of three to establish a plurality of forward gear ratios and at least one reverse gear ratio.Type: GrantFiled: October 30, 2013Date of Patent: January 13, 2015Assignee: GM Global Technology Operations, LLCInventors: Andrew W. Phillips, Clinton E. Carey, James M. Hart, Scott H. Wittkopp
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Patent number: 8932871Abstract: A system for a vehicle includes a first ozone sensor that generates a first sensor signal indicating a first amount of ozone in air flowing into a radiator. A second ozone sensor generates a second sensor signal indicating a second amount of ozone in air flowing out of the radiator. A control module receives the first sensor signal and the second sensor signal and determines an ozone conversion rate based on the first sensor signal and the second sensor signal.Type: GrantFiled: November 8, 2011Date of Patent: January 13, 2015Inventors: Scott H. Wittkopp, Chang H. Kim, Brian T. Heil
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Patent number: 8926469Abstract: 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 include clutches and brakes. The torque transmitting devices are each selectively engageable in combinations of at least three to establish a plurality forward speed ratios and at least one reverse speed ratio.Type: GrantFiled: August 22, 2012Date of Patent: January 6, 2015Assignee: GM Global Technology Operations, LLCInventors: James M. Hart, Andrew W. Phillips, Scott H. Wittkopp
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Publication number: 20140352491Abstract: The transmission includes an input shaft rotatable about a first axis of rotation, and a countershaft arranged substantially parallel with the input shaft and rotatable about a second axis of rotation. An output member is operatively connected to rotate in unison with the countershaft. Multiple pairs of intermeshing gears are included, each having a respective synchronizable gear that rotates about one of the input shaft and the countershaft, and a respective fixed gear mounted to the other one of the input shaft and the countershaft to rotate in unison therewith. An electric motor has a rotor concentric with and rotatable about the first axis of rotation. A first synchronizer is selectively engageable to synchronize rotation of the rotor with the input shaft. A second synchronizer is selectively engageable to synchronize rotation of the rotor with one of the synchronizable gears that rotates about the input shaft.Type: ApplicationFiled: May 30, 2013Publication date: December 4, 2014Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Craig S. Ross, Scott H. Wittkopp
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Patent number: 8897955Abstract: A system for a vehicle includes a conversion efficiency module, a threshold determination module, and a catalyst fault indication module. The conversion efficiency module generates an ozone conversion efficiency of a catalyst that converts ozone into oxygen based on a first amount of ozone in air measured upstream of the catalyst and a second amount of ozone in air measured downstream of the catalyst. The threshold determination module generates an efficiency threshold based on ambient humidity. The catalyst fault indication module selectively indicates that a fault is present in the catalyst when the ozone conversion efficiency is less than the efficiency threshold.Type: GrantFiled: February 24, 2012Date of Patent: November 25, 2014Inventors: Etsuko Muraji Stewart, Scott H. Wittkopp, Stuart R. Smith
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Patent number: 8858386Abstract: 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 nine forward speed ratios and at least one reverse speed ratio between the input member and the output member.Type: GrantFiled: March 7, 2011Date of Patent: October 14, 2014Assignee: GM Global Technology Operations, LLCInventors: Scott H. Wittkopp, Andrew W. Phillips, James M. Hart, Edward W. Mellet
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Patent number: 8826758Abstract: A transmission includes an input member, an output member, first and second transmission input 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 six forward speed ratios between the input member and the output member.Type: GrantFiled: September 12, 2012Date of Patent: September 9, 2014Assignee: GM Global Technology Operations, LLCInventors: Scott H. Wittkopp, Craig S. Ross
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Patent number: 8827860Abstract: A transmission includes an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. The transmission input member is connected to a dry launch clutch. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices are for example clutches and brakes. A hill hold control strategy is provided for locking the transmission without using the dry launch clutch by selectively engaging combinations of the clutches and brakes.Type: GrantFiled: December 2, 2011Date of Patent: September 9, 2014Assignee: GM Global Technology Operations, LLCInventors: Edward W. Mellet, Scott H. Wittkopp
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Patent number: 8808135Abstract: A transmission includes an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. The transmission input member is connected to a launch device that includes a planetary gear set connected with a pump or a pump having a rotatable housing connected to an engine and a rotor connected to the transmission input member. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices are for example clutches and brakes.Type: GrantFiled: January 12, 2012Date of Patent: August 19, 2014Assignee: GM Global Technology Operations, LLCInventors: Hamid Vahabzadeh, James B. Borgerson, James M. Hart, Scott H. Wittkopp
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Patent number: 8801565Abstract: A transmission is has an input member, an output member, a first planetary gear set assembly, a second planetary gear set assembly, a plurality of coupling members and a plurality of torque transmitting devices. The second planetary gear set assembly is a stacked planetary gear set having a first, a second, a third, a fourth and a fifth member and the first planetary gear set assembly has a first, a second, a third and a fourth member. The torque transmitting devices include clutches and brakes.Type: GrantFiled: September 13, 2010Date of Patent: August 12, 2014Assignee: GM Global Technology Operations, LLCInventors: James M. Hart, Scott H. Wittkopp, James B. Borgerson
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Patent number: 8733194Abstract: A transmission includes a transmission housing, a dual clutch assembly, a first through seven gear sets, a first transmission input shaft member rotatably supported in the transmission housing, a second transmission input shaft member rotatably supported in the transmission housing, a first countershaft rotatably supported within the transmission housing and spaced apart from and parallel with the first and second transmission input shaft members, a second countershaft rotatably supported within the transmission housing and spaced apart from and parallel with the first and second transmission input shaft members and five synchronizer assemblies each for selectively coupling at least one of the gears of the gear sets with at least one of the first countershaft and the second countershaft. The dual clutch assembly and the synchronizer assemblies are operable to achieve at least eight forward speed ratios and a reverse speed ratio between an input member and output member.Type: GrantFiled: April 27, 2011Date of Patent: May 27, 2014Assignee: GM Global Technology Operations, LLCInventors: Edward W. Mellet, Craig S. Ross, Scott H. Wittkopp
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Publication number: 20140135162Abstract: An automated electric manual transmission (EMT) has an input member, an output member, and at least one shaft. The input member and the at least one shaft are rotatable about a first axis of rotation. A countershaft is substantially parallel with the at least one shaft and is rotatable about a second axis of rotation. The output member is operatively connected to rotate with the countershaft. A transmission controller controls engagement of a plurality of torque-transmitting mechanisms to selectively establish different gear ratios from the at least one shaft to the transfer shaft through pairs of intermeshing gears. An electric motor and a planetary gear set are concentric with the first axis of rotation. The electric motor can provide torque to a member of the planetary gear set.Type: ApplicationFiled: November 14, 2012Publication date: May 15, 2014Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Scott H. Wittkopp, Craig S. Ross
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Patent number: 8721491Abstract: A powertrain has an input member, an output member, a stationary member, and a motor/generator. The powertrain includes a hybrid transmission with a first and a second planetary gear set. In some embodiments, a third planetary gear set is added. The motor/generator is continuously connected for common rotation with the first member of the second planetary gear set. A first interconnecting member continuously connects the second member of the first planetary gear set for common rotation with the third member of the second planetary gear set. A second interconnecting member continuously connects the third member of the first planetary gear set for common rotation with the second member of the second planetary gear set. A torque-transmitting mechanism is selectively engageable to connect the first member of the second planetary gear set for common rotation with the input member.Type: GrantFiled: August 17, 2011Date of Patent: May 13, 2014Assignee: GM Global Technology Operation LLCInventors: Scott H. Wittkopp, Edward W. Mellet, Shawn H. Swales
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Publication number: 20140128209Abstract: A transmission is provided having an input member, an output member, at least 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 include clutches and a brake actuatable in combinations of three to establish a plurality of forward gear ratios and at least one reverse gear ratio.Type: ApplicationFiled: October 30, 2013Publication date: May 8, 2014Applicant: GM Global Technology Operations LLCInventors: Andrew W. Phillips, Clinton E. Carey, James M. Hart, Scott H. Wittkopp
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Patent number: 8708859Abstract: A transmission having an input member, an output member, three 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 include clutches and brakes.Type: GrantFiled: January 31, 2013Date of Patent: April 29, 2014Assignee: GM Global Technology Operations LLCInventors: Andrew W. Phillips, Scott H. Wittkopp, James M. Hart, Clinton E. Carey
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Patent number: 8690722Abstract: 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 include clutches and brakes. The torque transmitting devices are each selectively engageable in combinations of at least three to establish a plurality of forward speed ratios and at least one reverse speed ratio between the input member and the output member.Type: GrantFiled: May 23, 2012Date of Patent: April 8, 2014Assignee: GM Global Technology Operations LLCInventors: Andrew W. Phillips, Scott H. Wittkopp, James M. Hart, Clinton E. Carey
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Patent number: 8678972Abstract: 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 each selectively engageable in combinations of at least three to establish at least nine forward speed ratios and at least one reverse speed ratio.Type: GrantFiled: October 3, 2011Date of Patent: March 25, 2014Assignee: GM Global Technology Operations LLCInventors: Scott H. Wittkopp, James M. Hart