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:
Jul. 09, 1985

Filed:

Aug. 20, 1982
Applicant:
Inventors:

Tooru Hamada, Neyagawa, JP;

Hirohisa Tanaka, Tokyo, JP;

Tomoo Ishihara, Takaidonishi, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
192-358 ; 192-0052 ; 1921 / ;
Abstract

An automatic clutch unit having a pneumatically operated servo-cylinder for operating a clutch and simultaneously incorporating one newly-developed proportional electro-pneumatic control valve, which supplies an air quantity corresponding to an intensity of electric current, to have the clutch shift in compliance with a delicate clutch displacement pattern according to each driving condition; perceiving that vacuum can easily be extracted from an intake manifold in case of a vehicle powered by a petrol engine and that a compressor for braking operation is always equipped in case of a vehicle powered by a large diesel engine.


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