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:
Apr. 30, 2002
Filed:
Nov. 27, 2000
Mark Batchelor, Newport, GB;
Meritor Heavy Vehicle Braking Systems (UK) Limited, Troy, MI (US);
Abstract
A fluid flow valve having a body ( ) with first, second and third fluid inlets ( ), a working fluid outlet ( ), a first pressure element ( ) movable, under the influence of pilot pressure fluid applied to the first inlet, from a first position in which it causes closure of the second inlet, to a second position in which it causes opening of the second inlet, and a second pressure element ( ) movable, in response to pressure at the fluid outlet, from a first position in which it causes closure of the third inlet ( ) to a second position in which it causes opening of the third inlet, said elements ( ) operating in conjunction to permit an initial high volume fluid flow from the second inlet through the outlet and subsequently, with the second element causing interruption of a path between the second inlet and outlet, a high pressure fluid flow from the third inlet through the outlet. The invention embraces a vehicle braking system incorporating the aforesaid valve.