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:
Jan. 14, 2014
Filed:
Sep. 15, 2009
Brian E. Tooman, White Lake, MI (US);
Daryl A. Wilton, Macomb, MI (US);
Patrick S. Portell, Clarkston, MI (US);
Ryan M. Jenness, Ypsilanti, MI (US);
Brian E. Tooman, White Lake, MI (US);
Daryl A. Wilton, Macomb, MI (US);
Patrick S. Portell, Clarkston, MI (US);
Ryan M. Jenness, Ypsilanti, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A multiple shift fork, single shift rail assembly reduces weight and complexity in manual and dual clutch transmissions. In a first embodiment, a stationary shift rail includes pluralities of detenting recesses and cooperating detent assemblies are mounted on the shift forks. Associated actuators translate the shift forks and synchronizer clutches. In a second embodiment, the detenting recesses reside on the outside surface of the shift forks and the detent assemblies are mounted in the transmission housing. In a third embodiment, one shift fork is slidably mounted on the shift rail and includes an external detent assembly. The shift rail itself translates and includes detenting recesses and a second shift fork connected thereto.