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. 24, 2007
Filed:
Jun. 30, 2005
Marc Andres, Schiltigheim, FR;
Marc Andres, Schiltigheim, FR;
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A power transmission for use in a powertrain has an input shaft, an output shaft, an input planetary gearset, and an output planetary gearset. The planetary gearsets are controlled through the selective engagement of seven torque-transmitting mechanisms, three of which are rotating-type torque-transmitting mechanisms and four of which are stationary-type torque-transmitting mechanisms. By selective engagement of the torque-transmitting mechanisms in combinations of three, the input planetary gearset and the output planetary gearset are combined to establish eight forward speed ratios between the input shaft and the output shaft.