Side bearing unit for railroad car, including method of making
US4712487A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 17, 1986 |
| Grant date | Dec 15, 1987 |
| Priority date | — |
| Expiry date | Jul 17, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61F5/142
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A side bearing unit for attachment to a bolster of a truck of a railroad car has a base which may be fastened to a top wall of the bolster. A housing, carried by the base, includes spaced sidewalls joined by end walls to define a cavity for an elastomeric device. A cap, positioned within the housing, is integrally joined to the elastomeric device with a top surface of the cap located above the housing for engagement with a wear plate attached to a bottom of a body of the car. During travel of the railroad car, sets of side bearing units are particularly effective in regulating independent rolling of the car body as well as impeding truck hunting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.