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. 13, 2003
Filed:
Jun. 11, 2001
Jeffrey Bodley Wehking, Ann Arbor, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A powertrain includes a continuously variable traction drive unit, a two-mode planetary gear set, and transfer gearing between the continuously variable unit (CVU) and the planetary gear unit. The planetary gear unit is essentially a four-node linkage mechanism having two members of each gear set interconnected. One member of one of the gear sets is connected to the CVU through a low range clutch and one of the interconnected members is connectable with the CVU through a high range clutch and another member is continuously connected with a prime mover, such as an engine. The planetary gear unit is controlled to provide a low mode that is controllable through the ratio of the CVU to establish a reverse range, a neutral condition, and a forward range. The planetary gear unit is also controllable to provide a high mode wherein the output the CVU and a mechanical path are combined at one gear set to provide a split drive, wherein a portion of the power is transmitted by the CVU and a portion of the power is transmitted by the more efficient mechanical path.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile