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:
Aug. 22, 1995

Filed:

Jul. 19, 1993
Applicant:
Inventor:

William S Broome, Inkberrow, GB;

Assignee:

Grau Limited, Redditch, GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ; B60T / ;
U.S. Cl.
CPC ...
303-3 ; 303 15 ; 3031134 ; 3031181 ; 303D / ;
Abstract

An electronically controlled braking system having a driver operated control 11 for providing an electrical braking demand signal and a fluid pressure back-up supply; an electronic control 10, 139 is responsive to the electrical braking demand signal, and brake valves 12, 13, 14, 15 are responsive to an instructing signal supplied to the brake valves by the electronic control 10, 139 to control supply of fluid under pressure from a source 20 to at least one actuator 16, 17, 18, 19 for brake application. The fluid pressure back-up supply is also fed to the brake valve and a shuttle valve 134 is provided to feed the back-up supply to the actuator 16, 17, 18, 19 if the electronic control 10, 139 fails.


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