Friction casting for a bolster pocket
USRE34963E · kind E · reissue
Assignee
Inventor
Key dates
| Filing date | May 3, 1994 |
| Grant date | Jun 13, 1995 |
| Priority date | — |
| Expiry date | May 3, 2014 |
Classification
- Technology area (CPC —)General
Abstract
A friction wedge for use in a railroad car truck bolster pocket which has a slanted rear wall and adjoining side walls perpendicular thereto, one surface thereof adapted to bear against a portion of a car truck side frame and a slanted surface and adjoining sides adapted to bear against the slanted rear wall and adjoining side walls of the bolster pocket. The friction wedge includes a metal body and a polymer cover providing the slanted surface and adjoining sides, with the polymer cover being formed in a plurality of sections movable relative to each other and the metal body such that, during use, the polymer sections may move into contact with the pocket rear wall and adjoining side walls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.