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:
Jul. 31, 2012
Filed:
Apr. 16, 2009
LI Chen, Shanghai, CN;
Chengliang Yin, Shanghai, CN;
Jie Shu, Shanghai, CN;
Jian Yao, Shanghai, CN;
Chunhao J. Lee, Troy, MI (US);
Chi-kuan Kao, Troy, MI (US);
Farzad Samie, Franklin, MI (US);
Yu Dong, Shanghai, CN;
Li Chen, Shanghai, CN;
Chengliang Yin, Shanghai, CN;
Jie Shu, Shanghai, CN;
Jian Yao, Shanghai, CN;
Chunhao J. Lee, Troy, MI (US);
Chi-Kuan Kao, Troy, MI (US);
Farzad Samie, Franklin, MI (US);
Yu Dong, Shanghai, CN;
GM Global Technology Operations LLC, Detroit, MI (US);
Shanghai Jiao Tong University, Shanghai, CN;
Abstract
A torque transmitting device includes a plurality of clutch plates, a ramp member that is selectively rotatable about an axis and that defines a ramp surface, a worm gear that is operatively connected to the ramp member for rotation therewith about the axis, and a roller element contacting the ramp surface. The ramp surface is configured such that, when the ramp member is rotated about the axis, the roller element exerts a reaction force on the ramp surface that urges the ramp member to move in a first axial direction and thereby transmit the reaction force to the clutch plates.