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:
Jul. 17, 1990
Filed:
May. 05, 1989
Glyn P Farr, Warwickshire, GB;
Lucas Industries, Birmingham, GB;
Abstract
Fluid is adapted to be released from a brake to an expansion chamber from which a pump is adapted to withdraw fluid to achieve automatic re-application to the brake. The system includes an inlet valve between a master cylinder and the brake, a re-application valve between the pump and the brake, and a dump valve between the brake and the expansion chamber. The three valves are solenoid-operated and are operable in a predetermined sequence by a control module responsive to signals from means responsive to the behaviour of a wheel braked by the brake. Brake re-application pressure may be held in a 'hold' mode by closing the re-application valve to prevent the pump from increasing the pressure within the brake. In a modification a separate, additional, hold valve may be provided to isolate the expansion chamber from the brake.