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.

Date of Patent:
May. 24, 1994

Filed:

Aug. 27, 1992
Applicant:
Inventors:

Shigeki Ohtagaki, Hyogo, JP;

Hirosi Watanabe, Hyogo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ; F16H / ;
U.S. Cl.
CPC ...
475150 ; 3644241 ;
Abstract

A rear differential gear allows to be locked by a differential gear lock switch at speeds less than a first set vehicle speed, prohibited from being locked at speeds greater than or equal to the first set vehicle speed, and automatically unlocked if the locked state elapses a predetermined period of time at speeds greater than or equal to a second set vehicle speed that is greater than the first set vehicle speed. Therefore, it can prevent reduction in driving stability due to the under-steering in a turning, even if a driver has forgotten unlocking the locked rear differential gear by operating the differential gear lock switch in a rear differential lock controller.


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