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:
Aug. 06, 1991
Filed:
Dec. 15, 1989
Motoi Takemura, Tokyo, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
A transfer differential gear lock controller in accordance with the present invention interlocks a switching operation of a transmission device between a low speed range and to a high speed range with a differential gear lock operation, controls a center differential gear lock mechanism to a lock state by detecting the operation state of the transmission device in the low speed range and makes it possible for a driver to complete his operation with only one shift operation to the low speed range. The controller makes it also possible to select between the lock state and free state for the center differential gear lock mechanism in response to the detection of the operation state of the transmission device in the high speed range through the driver's operation. For, those vehicles which are directed primarily to off-road driving are generally of low and high two-speed type, but in the case of four-wheel drive vehicles equipped with the center differential gear, the center differential gear lock mechanism must be locked under the road surface condition where driving must be made in the low speed range.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile