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:
Apr. 25, 2000
Filed:
Sep. 19, 1997
Takeharu Koide, Toyota, JP;
Eiji Orisaka, Nisshin, JP;
Kinya Yoshii, Toyota, JP;
Kenji Odaka, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A drive system for an electric vehicle, which can make the number of parts as small as possible and minimize the space for arranging the parts in a direction perpendicular to the axis. Between a motor acting as a prime mover and left and right output shafts, there are interposed toroidal type continuously variable transmissions which can individually control their gear ratios and their forces for thrusting power rollers. The RPMs and torques of left and right wheels can be individually controlled, and the differential rotation between the left and right wheels can be smoothly established by the continuously variable transmissions.