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:
Sep. 18, 2012
Filed:
Mar. 02, 2010
Thanh Ho, Brunswick, OH (US);
Thanh Ho, Brunswick, OH (US);
Bendix Commercial Vehicle Systems LLC, Elyria, OH (US);
Abstract
A valve includes a valve housing. A bore is in the valve housing. An inlet supply port fluidly communicates a pressurized supply fluid to the bore. A piston is movably positioned in the bore based on the pressure of the supply fluid. A portion of the piston extends into a frusto-conically shaped portion of the bore. A sealing member is associated with the portion of the piston sealingly engaging a surface of the frusto-conically shaped portion of the bore based on the pressure of the supply fluid. An inlet valve, movably positioned in the bore, is biased to sealingly engage a wall of the bore based on the pressure of the supply fluid. A control pressure supply port fluidly communicates a pressurized control fluid to the bore through the valve housing. A control pressure delivery port fluidly communicates with the control pressure supply port, via the bore, based on the pressure of the supply fluid. A venting port fluidly communicates with the control pressure delivery port, via the bore, based on the pressure of the supply fluid.