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:
Nov. 10, 1981
Filed:
Nov. 02, 1979
Eric C Hales, Leamington Spa, GB;
Harold Hodkinson, Leamington Spa, GB;
Automotive Products Limited, Leamington Spa, GB;
Abstract
A dual pressure modulating valve unit for a motor vehicle braking system has two identical valves arranged side-by-side in a common housing, each valve being for inclusion in separate sub-systems of a split braking system. The valves are of the pressure limiting or pressure reducing type wherein the pressure at which the valves start to reduce or limit the outlet pressure is determined by a biassing load on the valve plungers. The biassing loads are provided by a beam which normally divides the load of a single biassing spring equally between each plunger. In the event of a failure in one sub-system the plunger of the valve in the other sub-system receives the full load of the spring so that the pressure at which that valve starts to limit or reduce is substantially increased.