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:
Sep. 29, 1992
Filed:
Feb. 27, 1991
Applicant:
Inventors:
Hiroshi Ninomiya, Hiroshima, JP;
Satoshi Fujikawa, Hiroshima, JP;
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ; B60K / ;
U.S. Cl.
CPC ...
74335 ; 180249 ; 3644241 ;
Abstract
A transfer shift apparatus for shifting a vehicle between two wheel drive and four wheel drive includes a shift mechanism including a reversible motor which is continuously driven to rotate in one direction of rotation according to a shift signal so as to shift the vehicle into a desired drive condition. A motor drive controller controls the motor to stop its rotation when detecting a predetermined load on the motor and not to rotate in another direction for a predetermined time period from a time the shift signal disappears.