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. 12, 2019
Filed:
Nov. 07, 2016
Wabco Europe Bvba, Brussels, BE;
Rafal Bialon, Olawa, PL;
Andreas Teichmann, Isernhagen, DE;
WABCO Europe BVBA, Brussels, BE;
Abstract
A valve unit for modulating pressure in a compressed-air brake system comprises an inlet valve () and an outlet valve () configured as diaphragm valves, a brake pressure output () configured to be connected to or shut off from a brake pressure input () or a vent output (), two pilot valves () configured as 3/2-way solenoid valves, and a respective control chamber () adjacent to the diaphragm () of the diaphragm valves (). The diaphragms () are each clamped between two housing parts () via a respective ring bead () placed in a housing-side ring groove (). In order to avoid damaging the diaphragms (), an annular continuous or partially interrupted recess () is arranged in the ring groove () or immediately adjacent to the ring groove to receive displaced bead material from the diaphragm ().