Bolster of a railroad car truck with varying cross-sectional shape to provide less torsional rigidity at ends
US5327837A · kind A · utility
41Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 15, 1992 |
| Grant date | Jul 12, 1994 |
| Priority date | — |
| Expiry date | Jun 15, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61F5/52
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A bolster for a railroad car truck is described as having a generally hollow, box-like construction between its opposing ends which are transformed into I-shaped sections which are rigidly secured to the sideframes. The box-like frame provides the stiffness or rigidity necessary to resist high vertical and longitudinal loads which can cause the bolster to bend during operation of the truck. The I-shaped sections are relatively more flexible than the box-like frame to accommodate or absorb the twist loads that are encountered while being rigid enough to resist the loads that can cause the bolster to bend.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.