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:
Dec. 01, 1992

Filed:

Sep. 06, 1991
Applicant:
Inventors:

Yoichi Saito, Tokyo, JP;

Takamitsu Kashima, Tokyo, JP;

Masaru Kurihara, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
74861 ; 74866 ; 192-331 ;
Abstract

An automatic transmission has a lockup clutch for a torque converter. Concentration of alcohol is detected by an alcohol concentration sensor. The lockup clutch is engaged at a lower vehicle speed when the alcohol concentration detected by the alcohol concentration sensor is higher than a predetermined reference value.


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