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. 26, 2016
Filed:
Sep. 05, 2013
Applicant:
New York Air Brake Corporation, Watertown, NY (US);
Inventor:
Lawrence E. Vaughn, Watertown, NY (US);
Assignee:
New York Air Brake Corporation, Watertown, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B60T 15/24 (2006.01); B60T 15/02 (2006.01); B60T 15/18 (2006.01); B60T 13/26 (2006.01); B60T 17/22 (2006.01); B60T 13/38 (2006.01);
U.S. Cl.
CPC ...
B60T 15/021 (2013.01); B60T 13/26 (2013.01); B60T 15/184 (2013.01); B60T 17/228 (2013.01); B60T 13/385 (2013.01);
Abstract
A brake cylinder maintaining valve feeds brake pipe (BP) pressure through a choke to replenish and maintain brake cylinder (BC) pressure up, when the pressure in the brake cylinder drops below its original set pressure. In one embodiment, the brake cylinder maintaining valve may be a differential type valve having an input diaphragm and an output diaphragm having different surface areas.