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:
Mar. 01, 1994
Filed:
Jul. 09, 1992
Mizuho Sugiyama, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A rear-wheel steering apparatus for a wheeled vehicle has a linkage mechanism for steering a set of dirigible rear road wheels. The steering apparatus includes a planetary gear unit, the carrier of which is adapted as an output element drivingly connected to an input member of the linkage mechanism, a first electric motor, the output shaft of which is drivingly connected to a sun gear of the planetary gear unit, a first electromagnetic brake mechanism arranged to be activated only when the vehicle is travelling at a higher speed than a predetermined speed for restricting rotation of the sun gear, a second electric motor, the output shaft of which is drivingly connected to a ring gear of the planetary gear unit, and a second electromagnetic brake mechanism arranged to be activated only when the vehicle is travelling at a lower speed than the predetermined speed for restricting rotation of the ring gear.