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. 21, 2004
Filed:
May. 23, 2003
Applicant:
Inventors:
John D. Anderson, Aurora, IL (US);
W. Matthew Tonn, Batavia, IL (US);
Assignee:
ZefTek, Inc., Montgomery, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B61F 3/00 ;
U.S. Cl.
CPC ...
B61F 3/00 ;
Abstract
A self-lubricating center plate assembly liner for placement between a car body center plate and a truck bolster bowl of a center plate assembly in a railroad car, wherein the liner is configured to substantially mate with the center plates and includes a body having a glass-filled urethane load-bearing portion and a plurality of carbon filled urethane compressible conductive resilient members which extend through, above and below the load-bearing portion to provide electrical continuity between the plate and bowl in the center plate assembly.