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. 17, 1987
Filed:
Oct. 16, 1985
Isao Tsuzuki, Toyota, JP;
Abstract
A power transmission for a four-wheel drive vehicle includes a change-speed gearing mounted within a transmission casing, and an intermediate differential unit assembled within the transmission casing and drivingly connected to an output shaft of the change-speed gearing to be applied with a driving torque through the change-speed gearing for transmitting the driving torque to a first drive shaft for front-wheel drive and to a second drive shaft for rear-wheel drive. The differential unit comprises an input member drivingly connected to the output shaft of the change-speed gearing, a plurality of planetary gear sets coaxially arranged within the transmission casing and drivingly connected to the input member, the planetary gear sets being designed to provide a plurality of drive power trains at a different gear ratio, and a shift mechanism arranged to selectively connect one of the planetary gear sets to the first and second drive shafts.