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:
Aug. 29, 2017
Filed:
Dec. 10, 2013
Faiveley Transport Amiens, Amiens, FR;
Mickael Marechal, Hem Hardinval, FR;
Gilbert Le Gall, Amiens, FR;
FAIVELEY TRANSPORT AMIENS, Amiens, FR;
Abstract
A pneumatic brake valve unit for a rail vehicle, includes: a main device () designed for selective control of a communication path between a brake pipe connector () and either an atmospheric exhaust line () or an auxiliary reservoir connector (), such that the pressure at the brake pipe connector () is k times the difference between the pressure at a control reservoir connector () and the pressure at a main brake pipe connector (), k being a proportionality factor; and a reset device () designed for selective control of a communication path between an air discharge member () and the control reservoir connector () between an open position when the pressure at the brake pipe connector () is atmospheric pressure and a closed position when the pressure at the brake pipe connector () is above atmospheric pressure.