Railraod hopper car door actuating mechanism
US5249531A · kind A · utility
30Cited by
8References
17Claims
0Family size
Inventor
Key dates
| Filing date | Nov 25, 1991 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Nov 25, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61D7/28
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An actuating system for operating the doors of a railroad hopper car. A plurality of levers for each hopper operate to rotate the doors of the hopper between an open and a closed position. The mechanism applies a tension force, rather than a compressive force, to push the doors closed. The mechanism also provides an over center latch to positively close each door. The mechanism may be used on either single or double hopper doors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.