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:
Jan. 19, 1993
Filed:
Apr. 09, 1991
Glyn P Farr, Leek Wootton, GB;
Lucas Industries Public Limited Company, Birmingham, GB;
Abstract
A brake pressure reducing valve assembly (1) includes first (2) and second (3) normally open valve sets each for controlling communication between respective associated inlet (4A,15) and outlet (4,16) chambers. The first valve set (2) is controlled by a brake pressure responsive piston (6) and a deceleration responsive member (7). The second valve set (3) is controlled by a pressure responsive piston (14). The respective pressure responsive pistons (6,14) are biased apart by a common compression spring (9). In use, the force applied to the piston (14) of the second valve set (3) by the spring (9) is determined by the position of the piston (6) of the first valve set (2) relative to the valve body. Accordingly the pressures at the outlet chambers (4,16) are maintained equal. The valve provides deceleration responsive brake pressure reduction to the rear brakes of a dual braking system without the need for two separate deceleration responsive members.