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:
Sep. 23, 2014
Filed:
Jun. 27, 2012
Goro Tamai, West Bloomfield, MI (US);
Anthony J. Corsetti, Rochester Hills, MI (US);
Alan G. Holmes, Clarkston, MI (US);
Brendan M. Conlon, Rochester Hills, MI (US);
Goro Tamai, West Bloomfield, MI (US);
Anthony J. Corsetti, Rochester Hills, MI (US);
Alan G. Holmes, Clarkston, MI (US);
Brendan M. Conlon, Rochester Hills, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An electro-mechanical drive unit connectable with multiple power sources for launching and propelling a vehicle includes an output member, a stationary member, a gear-train, and a torque-transmitting device. The drive unit also includes a compound planetary gear arrangement having a first, second, third, and fourth junction points. The power sources include a first motor/generator and a second motor/generator. The second motor/generator is operatively connected to the compound planetary gear arrangement at the first junction point via the gear-train and the output member is operatively connected to the compound planetary gear arrangement at the second junction point. Additionally, the first motor/generator is operatively connected to the compound planetary gear arrangement at the fourth junction point. Furthermore, the torque-transmitting device is engageable to ground the third junction point to the stationary member.