Railway car counter balanced tilting deck
US4248557A · kind A · utility
8Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1979 |
| Grant date | Feb 3, 1981 |
| Priority date | — |
| Expiry date | Mar 1, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61D3/18
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An operating mechanism for a hinged deck portion of a vehicle-carrying auto-rack railway car utilizing a first-class lever to counterbalance the deck end portion. A spring load is provided by a Belleville spring pack of novel, compact construction which has a substantially constant spring-force versus deflection curve such that manual manipulation of the hinged deck by operating personnel is facilitated during loading and unloading of the auto-rack car.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.