Patents by Inventor Chi Teck Lee
Chi Teck Lee 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: 20230151875Abstract: Motor driven systems with optimized performance and efficiency are provided. A drive system includes a motor and a gear system coupled with the motor by a shaft. The gear system includes a pair of input gears disposed on the shaft, and a pair of transfer shafts including transfer gears meshing with the input gears. The gear system is configured to cancel axial, radial and/or tangential forces for minimized net force at the shaft.Type: ApplicationFiled: November 17, 2021Publication date: May 18, 2023Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Shawn H. Swales, Chi Teck Lee, Alan G. Holmes, Hai Xu, Venu Gopal Ganti, Avinash Singh
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Patent number: 11499615Abstract: An automobile vehicle split torque transmission includes an electrical motor having a rotor drive shaft with a drive pinion attached to the rotor drive shaft, the rotor drive shaft defining a first axis. A first transfer gear is mounted on a first transfer gear shaft defining a second axis, the first transfer gear meshed with the drive pinion. A second transfer gear is mounted on a second transfer gear shaft defining a third axis, the second transfer gear meshed with the drive pinion. A differential ring gear is supported on a differential shaft and rotates a differential assembly, the differential shaft defining a fourth axis.Type: GrantFiled: September 29, 2020Date of Patent: November 15, 2022Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Chi Teck Lee, Christopher M. Kaminski, Kirk L. Wirth, Dan Coffey
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Publication number: 20220099168Abstract: An automobile vehicle split torque transmission includes an electrical motor having a rotor drive shaft with a drive pinion attached to the rotor drive shaft, the rotor drive shaft defining a first axis. A first transfer gear is mounted on a first transfer gear shaft defining a second axis, the first transfer gear meshed with the drive pinion. A second transfer gear is mounted on a second transfer gear shaft defining a third axis, the second transfer gear meshed with the drive pinion. A differential ring gear is supported on a differential shaft and rotates a differential assembly, the differential shaft defining a fourth axis.Type: ApplicationFiled: September 29, 2020Publication date: March 31, 2022Inventors: Chi Teck Lee, Christopher M. Kaminski, Kirk L. Wirth, Dan Coffey
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Publication number: 20210083546Abstract: A propulsion system for a motor vehicle includes a casing having first and second housing portions cooperating with one another to define a cavity. The propulsion system further includes an electric motor disposed within the cavity. A support mechanism is attached to at least one of the first and second housing portions. The support mechanism includes a first side that faces the first housing portion and a second side that faces the second housing portion and is disposed within the cavity. Bearing seats are formed in the first housing portion, the second housing portion, and the second side of the support mechanism. Bearings are engaged with an associated one of the bearing seats and are configured to rotatably support the input member, the layshaft, and the output member in a fixed-free bearing arrangement. The first side of the support mechanism is free of the bearing seats and the bearings.Type: ApplicationFiled: September 13, 2019Publication date: March 18, 2021Inventors: Pete R. Garcia, Boris Burgman, Chi Teck Lee, Rebecca K. Risko Cattell, Patrick S. Portell
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Patent number: 9707834Abstract: A transmission with a common carrier planetary gear set is provided for a vehicle that has drive axle half shafts defining an axis of rotation, an electric motor/generator with a motor shaft parallel with the axis of rotation, either concentric with the axis of rotation or spaced therefrom, and a differential with a differential carrier connected with the drive axle half shafts. The planetary gear set has a first sun gear member continuously or selectively connectable with the motor shaft, first and second pinion gears, a carrier member rotatably supporting the first and the second pinion gears so that the first pinion gear meshes with the first sun gear member, and a ring gear member meshing with one of the pinion gears. The ring gear is connectable to a non-rotating housing. The carrier member is operatively connected with the differential carrier.Type: GrantFiled: May 13, 2014Date of Patent: July 18, 2017Assignee: GM Global Technology Operations LLCInventors: Chi Teck Lee, Arthur L. McGrew, Jr.
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Patent number: 9597958Abstract: A power take-off (PTO) system for a motor vehicle includes a PTO housing. The PTO housing is mounted to a transmission case. A disconnect clutch assembly is positioned within the PTO housing acting when supplied with a first volume of a pressurized oil from the transmission case to engage an output shaft member. A controlled lube oil circuit is isolated from the first volume of the pressurized oil. The controlled lube oil circuit supplies a second volume of the pressurized oil directly to the disconnect clutch assembly to lubricate the disconnect clutch assembly. A lube oil drain return is connected to the PTO housing. The lube oil drain return receives oil that collects inside the PTO housing to be returned to the transmission case.Type: GrantFiled: August 11, 2015Date of Patent: March 21, 2017Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Timothy J. Reinhart, Addison T. Solak, Chi Teck Lee
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Publication number: 20170043661Abstract: A power take-off (PTO) system for a motor vehicle includes a PTO housing. The PTO housing is mounted to a transmission case. A disconnect clutch assembly is positioned within the PTO housing acting when supplied with a first volume of a pressurized oil from the transmission case to engage an output shaft member. A controlled lube oil circuit is isolated from the first volume of the pressurized oil. The controlled lube oil circuit supplies a second volume of the pressurized oil directly to the disconnect clutch assembly to lubricate the disconnect clutch assembly. A lube oil drain return is connected to the PTO housing. The lube oil drain return receives oil that collects inside the PTO housing to be returned to the transmission case.Type: ApplicationFiled: August 11, 2015Publication date: February 16, 2017Inventors: Timothy J. REINHART, Addison T. Solak, Chi Teck Lee
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Patent number: 9457659Abstract: A transmission includes a housing, an input shaft, a transfer shaft, a first and second transfer members, a continuous transfer member, a drive shaft, and a torque transmitting mechanism. The input shaft and transfer shaft are each rotatably supported by the housing and are parallel to each other. The first transfer member is connected for common rotation with the input shaft. The second transfer member is connected for common rotation with the transfer shaft. The continuous transfer member is engaged with each of the first and second transfer members. The drive shaft is disposed coaxially and partially covered by the transfer shaft. The torque transmitting mechanism selectively connects the transfer shaft with the drive shaft.Type: GrantFiled: December 17, 2014Date of Patent: October 4, 2016Assignee: GM Global Technology Operations, LLCInventors: Gregory W. Kempf, Chi Teck Lee
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Publication number: 20160176288Abstract: A transmission includes a housing, an input shaft, a transfer shaft, a first and second transfer members, a continuous transfer member, a drive shaft, and a torque transmitting mechanism. The input shaft and transfer shaft are each rotatably supported by the housing and are parallel to each other. The first transfer member is connected for common rotation with the input shaft. The second transfer member is connected for common rotation with the transfer shaft. The continuous transfer member is engaged with each of the first and second transfer members. The drive shaft is disposed coaxially and partially covered by the transfer shaft. The torque transmitting mechanism selectively connects the transfer shaft with the drive shaft.Type: ApplicationFiled: December 17, 2014Publication date: June 23, 2016Inventors: GREGORY W. KEMPF, CHI TECK LEE
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Patent number: 9290092Abstract: A chain drive power take off assembly drives a hydraulic fluid pump from a torque converter input of a motor vehicle. The assembly includes a first, chain drive sprocket which is coupled to and driven by a engine output/torque converter input member such as an engine crankshaft or transmission input member, a chain and a second, driven chain sprocket which is coupled to a stub shaft and which, in turn, is coupled to an input shaft of the hydraulic pump. The driven sprocket resides in a housing secured to the side of the transmission and the pump is secured to the housing with its input shaft and axis of rotation disposed offset from and parallel to the axis of rotation of the transmission and torque converter input member.Type: GrantFiled: June 11, 2013Date of Patent: March 22, 2016Assignee: GM Global Technology Operations LLCInventors: Gregory W. Kempf, Chi Teck Lee, Greg B. Witczak, Trevor Murray
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Publication number: 20150330492Abstract: A transmission with a common carrier planetary gear set is provided for a vehicle that has drive axle half shafts defining an axis of rotation, an electric motor/generator with a motor shaft parallel with the axis of rotation, either concentric with the axis of rotation or spaced therefrom, and a differential with a differential carrier connected with the drive axle half shafts. The planetary gear set has a first sun gear member continuously or selectively connectable with the motor shaft, first and second pinion gears, a carrier member rotatably supporting the first and the second pinion gears so that the first pinion gear meshes with the first sun gear member, and a ring gear member meshing with one of the pinion gears. The ring gear is connectable to a non-rotating housing. The carrier member is operatively connected with the differential carrier.Type: ApplicationFiled: May 13, 2014Publication date: November 19, 2015Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Chi Teck Lee, Arthur L. McGrew, JR.
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Patent number: 9039565Abstract: 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 brakes actuatable in combinations of three to establish a plurality of forward gear ratios and at least one reverse gear ratio.Type: GrantFiled: September 27, 2013Date of Patent: May 26, 2015Assignee: GM Global Technology Operations, LLCInventor: Chi Teck Lee
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Publication number: 20140360290Abstract: A chain drive power take off assembly drives a hydraulic fluid pump from a torque converter input of a motor vehicle. The assembly includes a first, chain drive sprocket which is coupled to and driven by a engine output/torque converter input member such as an engine crankshaft or transmission input member, a chain and a second, driven chain sprocket which is coupled to a stub shaft and which, in turn, is coupled to an input shaft of the hydraulic pump. The driven sprocket resides in a housing secured to the side of the transmission and the pump is secured to the housing with its input shaft and axis of rotation disposed offset from and parallel to the axis of rotation of the transmission and torque converter input member.Type: ApplicationFiled: June 11, 2013Publication date: December 11, 2014Inventors: Gregory W. Kempf, Chi Teck Lee, Greg B. Witczak, Trevor Murray
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Publication number: 20140100073Abstract: 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 brakes actuatable in combinations of three to establish a plurality of forward gear ratios and at least one reverse gear ratio.Type: ApplicationFiled: September 27, 2013Publication date: April 10, 2014Applicant: GM Global Technology Operations LLCInventor: Chi Teck Lee