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Patent Agency Ranking
公开(公告)号：US20210170869A1
公开(公告)日：2021-06-10
申请号：US16707313
申请日：2019-12-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Chengwu Duan , Mohammad Hotait , Jian Yao
Abstract: A speed reduction assembly for an electric vehicle includes an electric machine configured to operate as a motor and as a generator. The electric machine includes an output shaft that is rotatable about a longitudinal axis at an output speed. The assembly also includes an output member coupled to the output shaft and rotatable about the longitudinal axis at a reduced speed. In addition, the assembly includes a pericyclic apparatus coupled to the output shaft and the output member to reduce the output speed of the output shaft to the reduced speed of the output member. A vehicle may include the speed reduction assembly in certain configurations. The vehicle includes a battery module and the electric machine is in electrical communication with the battery module to recharge the battery module when the electric machine operates as the generator.
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公开(公告)号：US20220099169A1
公开(公告)日：2022-03-31
申请号：US17036796
申请日：2020-09-29
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Seongchan Pack , Mohammad Hotait
Abstract: A gear assembly includes a first gear having a first hub surrounded by a first plurality of teeth. The first plurality of teeth each define a respective first contact region. The gear assembly includes a second gear having a second hub surrounded by a second plurality of teeth. The second plurality of teeth are adapted to mesh with the first plurality of teeth at the respective first contact region in order to drive a respective load in a first direction. The first hub and the first plurality of teeth include respective zones defining a respective elastic modulus. A three-dimensional distribution of the respective physical size and the respective elastic modulus of the respective zones is optimized such that a fluctuation of mesh stiffness along the respective first contact region is at or below a first predefined threshold.
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公开(公告)号：US11524576B2
公开(公告)日：2022-12-13
申请号：US16707313
申请日：2019-12-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Chengwu Duan , Mohammad Hotait , Jian Yao
Abstract: A speed reduction assembly for an electric vehicle includes an electric machine configured to operate as a motor and as a generator. The electric machine includes an output shaft that is rotatable about a longitudinal axis at an output speed. The assembly also includes an output member coupled to the output shaft and rotatable about the longitudinal axis at a reduced speed. In addition, the assembly includes a pericyclic apparatus coupled to the output shaft and the output member to reduce the output speed of the output shaft to the reduced speed of the output member. A vehicle may include the speed reduction assembly in certain configurations. The vehicle includes a battery module and the electric machine is in electrical communication with the battery module to recharge the battery module when the electric machine operates as the generator.
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公开(公告)号：US11054001B1
公开(公告)日：2021-07-06
申请号：US16929860
申请日：2020-07-15
Applicant: GM Global Technology Operations LLC
Inventor： Goro Tamai , Shawn H. Swales , Mohammad Hotait
Abstract: An electric drive unit includes an electric motor, a differential assembly, and a double-helical gearset positioned between and interconnecting the electric motor and the differential assembly and adapted to transfer rotational motion from the electric motor to the differential assembly, the double-helical gearset including a driving double-helical gear rotationally mounted onto a transfer shaft of the electric motor and including a right-hand helix, a left-hand helix and a gap extending circumferentially between the right-hand helix and the left-hand helix, and a driven double-helical gear rotationally mounted onto a housing of the differential assembly and including a right-hand helix, a left-hand helix and a gap extending circumferentially between the right-hand helix and the left-hand helix, and a park gear positioned within the gap between the right hand helix and the left hand helix of one of the driving double-helical gear and the driven double-helical gear, wherein one of the driving double-helical gear and the driven double-helical gear is axially moveable.
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公开(公告)号：US11300190B1
公开(公告)日：2022-04-12
申请号：US17036796
申请日：2020-09-29
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Seongchan Pack , Mohammad Hotait
Abstract: A gear assembly includes a first gear having a first hub surrounded by a first plurality of teeth. The first plurality of teeth each define a respective first contact region. The gear assembly includes a second gear having a second hub surrounded by a second plurality of teeth. The second plurality of teeth are adapted to mesh with the first plurality of teeth at the respective first contact region in order to drive a respective load in a first direction. The first hub and the first plurality of teeth include respective zones defining a respective elastic modulus. A three-dimensional distribution of the respective physical size and the respective elastic modulus of the respective zones is optimized such that a fluctuation of mesh stiffness along the respective first contact region is at or below a first predefined threshold.
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