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:
May. 20, 1997
Filed:
Feb. 27, 1996
James C Hoffner, Irwin, PA (US);
Patricia T Karczewski, Export, PA (US);
Julie A Krawczyk, Monroeville, PA (US);
Westinghouse Air Brake Company, Wilmerding, PA (US);
Abstract
A push rod holder for use with a brake cylinder of a railroad vehicle is disclosed. The push rod holder includes an annular outer metal member and an annular inner elastomeric member. The annular inner elastomeric member is molded to an interior surface of the annular outer metal member. The push rod holder defines at least one set screw throughhole and a pair of aligned holder pin throughholes. Each of the throughholes is oriented perpendicularly to a longitudinal axis of the push rod holder. The brake cylinder includes a hollow piston rod and a push rod assembly inserted therein. The push rod holder concentrically fits onto the hollow piston rod. The annular inner elastomeric member assures that the push rod holder fits snugly about the hollow piston rod. At least one set screw is used to attach the push rod holder to the hollow piston rod via the at least one set screw throughhole. A holder pin device is used to lock the push rod holder to the hollow piston rod and the push rod assembly contained therein. The annular inner elastomeric member dampens vibrations encountered at the junction of the push rod holder, hollow piston rod and push rod assembly. The push rod holder thus reduces the likelihood of damage occurring to these components and prolongs the operational life of the brake cylinder.