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:
Nov. 10, 1981

Filed:

Aug. 22, 1979
Applicant:
Inventors:

David Parsons, Kenilworth, GB;

Maurice Taylor, Leamington Spa, GB;

Alastair J Young, Kenilworth, GB;

Assignee:

Automotive Products Limited, Leamington Spa, GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
192 / ; 60581 ; 60591 ;
Abstract

A master cylinder and brake valve assembly for operating the clutch and clutch brake of a heavy road vehicle is arranged such that up to a first given displacement of the master cylinder piston the clutch release mechanism only is connected to the master cylinder and, above a second further given displacement of the piston, the brake actuator only is connected to the master cylinder, there being a step change in thrust applied to the piston between the given displacements. In a modification, above a third further given displacement of the piston, the brake actuator is reisolated from the master cylinder.


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