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. 01, 1989
Filed:
Jun. 24, 1987
Applicant:
Inventors:
Katsunori Oshiage, Yokohama, JP;
Haruyoshi Kumura, Kamakura, JP;
Assignee:
Nissan Motor Company, Ltd., Yokohama, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
3644241 ; 74866 ;
Abstract
A ratio control system for a continuously variable transmission employs proportional and integral control. When an error is greater than a predetermined value, a variation in a component of a shift command signal which is based on an integral control factor is restrained. A shift actuator is operable on the shift command signal to effect shifting in the continuously variable transmission.