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. 17, 1996
Filed:
Aug. 07, 1995
Robert L Bullock, Antioch, IL (US);
Standard Car Truck Company, Park Ridge, IL (US);
Abstract
A friction wedge for use in damping relative movement between the bolster and the side frame of a railroad car truck includes a body formed and adapted to be positioned in a pocket of one of the bolster and side frame. The body has spaced body portions integrally joined by an intermediate connecting portion. Each of the spaced body portions has a friction surface formed and adapted during normal use to be in frictional contact with a wear resistant surface on the other of the bolster and side frame. The spaced friction surfaces on the wedge body are effective to increase the resistance to bolster/side frame warp movement over and above the resistance provided by a continuous friction surface which is equal in width to the distance between the outside of each of the spaced friction surfaces.