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:
Jul. 22, 2003
Filed:
Nov. 22, 2000
Xiaolan Ai, Massillon, OH (US);
Terry W. Mohr, Canton, OH (US);
The Timken Company, Canton, OH (US);
Abstract
A continuously variable transmission has two planetary units organized about a common axis, with each unit including a sun member, a ring member, planet elements located between the sun and ring members, and carrier members providing axes about which the planet elements rotate. The two units are connected mechanically and through two variators, each of which preferably takes the form of a motor-generator. The arrangement creates two paths for transferring power from an input shaft to an output shaft—one path being a planetary path and the other a variator path. When power transfers through the variator path, one variator functions as a generator and the other as a motor. Between the two variators is a control unit which controls the amount of power transferred through the variator path.