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:
May. 22, 1984
Filed:
Mar. 26, 1981
Applicant:
Inventors:
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Primary Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
192-331 ; 192-358 ; 192 / ; 1921 / ; 74866 ; 74732 ;
Abstract
A look-up control system for a lock-up type automatic transmission wherein a torque converter locks up in a pattern when the engine temperature is higher than a predetermined temperature value, but is prevented from locking up in the pattern when the engine temperature is lower than the predetermined temperature value. During engine operation when the engine temperature is lower than the predetermined temperature value, the torque converter is allowed to lock up in a second pattern or prevented from locking up.