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:
Aug. 09, 2011
Filed:
Dec. 08, 2008
Scott H. Wittkopp, Ypsilanti, MI (US);
James B. Borgerson, Clarkston, MI (US);
Donald L. Dusenberry, Farmington Hills, MI (US);
James M. Hart, Belleville, MI (US);
Farzad Samie, Franklin, MI (US);
Alexander Millerman, Bloomfield Hills, MI (US);
Chunhao J. Lee, Troy, MI (US);
Scott H. Wittkopp, Ypsilanti, MI (US);
James B. Borgerson, Clarkston, MI (US);
Donald L. Dusenberry, Farmington Hills, MI (US);
James M. Hart, Belleville, MI (US);
Farzad Samie, Franklin, MI (US);
Alexander Millerman, Bloomfield Hills, MI (US);
Chunhao J. Lee, Troy, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A selectable one-way clutch (SOWC) assembly uses hydraulic-actuation to select operating modes within a rotating housing. Two races of the SOWC assembly can rotate at disparate speeds, i.e., one race is not grounded prior to actuation. The SOWC assembly has a pair of races keyed to different housings and hubs. The housing and hub can be attached to different elements of a gear train, for example, which can be rotating during the various gear states. A hydraulic actuator or multiple actuators can be keyed to the housing, with axial motion of the actuator or actuators selecting a state or operating mode of the SOWC assembly. The actuator has axially-extending tabs that engage radially-extending fingers of the selector plate, thus rotating the selector plate in different directions when applied or released. Multiple actuators can be used in conjunction with multiple selector plates to provide additional SOWC operating modes.