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:
May. 30, 2006
Filed:
Jun. 07, 2004
Paul D Stevenson, Ann Arbor, MI (US);
Scott H Wittkopp, Ypsilanti, MI (US);
Richard a Winship, Westland, MI (US);
James B. Borgerson, Ann Arbor, MI (US);
Joel M. Maguire, Northville, MI (US);
Kent H. Kienzle, Ann Arbor, MI (US);
Donald L. Dusenberry, Farmington Hills, MI (US);
Jeffrey J. Biallas, Dexter, MI (US);
Clinton E. Carey, Monroe, MI (US);
Paul D Stevenson, Ann Arbor, MI (US);
Scott H Wittkopp, Ypsilanti, MI (US);
Richard A Winship, Westland, MI (US);
James B. Borgerson, Ann Arbor, MI (US);
Joel M. Maguire, Northville, MI (US);
Kent H. Kienzle, Ann Arbor, MI (US);
Donald L. Dusenberry, Farmington Hills, MI (US);
Jeffrey J. Biallas, Dexter, MI (US);
Clinton E. Carey, Monroe, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A powertrain includes a power transmission having an input shaft continuously connected directly between an engine and a planetary gear member of a first planetary gearset. Another member of the planetary gearset is selectively grounded by a torque transmitting mechanism to establish a reaction member during the launch of a vehicle incorporating the powertrain. The reaction member is established during both the lowest forward drive ratio and the reverse drive ratio. A third member of the planetary gearset transmits the torque from the input shaft, as modified by the planetary gearset, to other planetary gearsets in down stream power flow arrangement with the first planetary gearset.