Railway car truck transom including a tubular bearing assembly
US4242966A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1979 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Apr 26, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61F3/08
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a railway car truck a transom is provided comprising a pair of tubes rigidly connected respectively to a pair of longitudinally extending side frames. The tubes are longitudinally and vertically aligned and are located below a bolster which extends between the side frames above the transom. A bearing rigidly attached to one of the tubes extends within the other of the tubes. The external surface of the bearing is provided with low friction material to allow the side frames to rock in respective vertical planes about a transverse axis as ups and downs in the track are transversed. However, the transom resists the tendency for the side frames to move longitudinally with respect to each other, and thus maintains the truck in tram.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.