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. 15, 1988
Filed:
Jul. 30, 1986
Applicant:
Inventors:
Shoji Kawata, Okazaki, JP;
Tsuyoshi Yoshida, Okazaki, JP;
Assignee:
Aisin Seiki Kabushiki Kaisha, Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
192-331 ; 192-328 ; 1921 / ;
Abstract
A lockup clutch in a torque converter is connected by a lockup solenoid energized in response to a lockup signal generated by a lockup discrimination circuit. When a speed sensor detects a rate of deceleration higher than a predetermined level at the time the vehicle is abruptly braked, for example, a lockup control circuit overrides the lockup discrimination circuit to cut off the lockup signal for thereby de-energizing the lockup solenoid, whereupon the lockup clutch is disconnected.