The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 2021
Filed:
Apr. 21, 2020
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Kang Hoon Lee, Goyang-Si, KR;
Sung Hoon Park, Seongnam-Si, KR;
Jae Young Jeon, Osan-Si, KR;
Wonseok Oh, Incheon, KR;
Hyundai Motor Company, Seoul, KR;
Kia Corporation, Seoul, KR;
Abstract
A clutch unit of an automatic transmission having first and second rotation elements may include a spline gear connected to the first rotation element, a clutch drum having an internal circumference spline-engaged with the spline gear to be movable in an axial direction, a clutch hub fixedly connected to a second rotation element, a plurality of clutch plates spline-engaged with the clutch drum, a plurality of clutch disks alternatingly disposed between the plurality of clutch plates and spline-engaged with the clutch hub, a supporting portion fixed to a transmission housing of the automatic transmission and configured to support the plurality of clutch plates, and a piston disposed in an interior of the transmission housing to form a hydraulic pressure chamber with the transmission housing, configured to have a rolling contact with the clutch drum interposing a bearing, and configured to transmit a pressurizing force to the plurality of clutch plates and the clutch disks through the clutch drum.