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:
Nov. 18, 2003
Filed:
May. 23, 2002
Dan Coffey, Howell, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A traction drive transmission that operates in a geared neutral condition includes coaxial input and output shafts and a traction drive unit connected to the input shaft. A first gearset has a first carrier attached to the input shaft and the drive unit, a first sun gear attached to the drive unit, and a first ring gear. A second gearset has a second sun gear, a second carrier attached to the first ring gear and a second ring gear attached to the first carrier. A third gearset has a third sun gear attached to the second sun gear, a third carrier and a third ring gear. A first clutch is operative to drivably connect the second carrier and one of the output shaft and the third carrier. A second clutch is operative to brake one of the third carrier and the third ring gear.