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. 01, 2013
Filed:
Jul. 22, 2009
Edwin T. Grochowski, Howell, MI (US);
Scott H. Wittkopp, Ypsilanti, MI (US);
James B. Borgerson, Clarkston, MI (US);
James M. Hart, Belleville, MI (US);
Edwin T. Grochowski, Howell, MI (US);
Scott H. Wittkopp, Ypsilanti, MI (US);
James B. Borgerson, Clarkston, MI (US);
James M. Hart, Belleville, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
Various embodiments of electrically-variable transmissions are provided that have two motor-generators, two planetary gear sets, and two torque-transmitting mechanisms, including a rotating-type clutch and a stationary-type clutch. An input member is connected for common rotation with a ring gear of the first planetary gear set. Carriers of both of the planetary gear sets are connected for common rotation with one another, and with an output member. The first motor/generator is connected for common rotation with the sun gear of the first planetary gear set. The second motor/generator is connected for common rotation with the sun gear of the second planetary gear set. A drive transfer assembly transfers torque from components establishing the first axis of rotation through components establishing one or two additional axes of rotation to a differential establishing yet another axis of rotation.