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. 16, 2013
Filed:
Aug. 13, 2010
Joakim Hogberg, Vanersborg, SE;
Uwe Krist, Kelsterbach, DE;
James M. Partyka, Clarkston, MI (US);
Robert Neil Paciotti, White Lake, MI (US);
Stefan Gebert, Sonnefeld, DE;
Jurgen Ryba, Reckendorf, DE;
Joakim Hogberg, Vanersborg, SE;
Uwe Krist, Kelsterbach, DE;
James M. Partyka, Clarkston, MI (US);
Robert Neil Paciotti, White Lake, MI (US);
Stefan Gebert, Sonnefeld, DE;
Jurgen Ryba, Reckendorf, DE;
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A dual clutch actuation device generates the axial compression force required to compress a first and second set of frictional elements of a dual clutch module. Dual clutch actuation device includes a first and second annular piston. The annular pistons include a first end that is in contact with annular bearing assemblies. The annular bearing assemblies are in contact with actuation levers that are in contact with the first set of frictional elements. The annular pistons are arranged in concentric annular piston slots. Together the piston and annular slots form annular piston chambers. The piston chambers are filled with hydraulic fluid. When the hydraulic fluid is pressurized the pistons slide out of the annular slots and apply a force on the actuation levers which in turn apply an axial compression force on the frictional elements.