Manual discharge door operating system for a hopper railcar
US6405658B1 · kind B1 · utility
19Cited by
20References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | May 31, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61D7/18
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A manual discharge door operating system for a hopper railcar includes a door actuation shaft coupled to the railcar extending across the width of the railcar. The door actuation shaft has distal ends accessible from opposite sides of the railcar with each distal end adapted to be engaged with a handle for rotation of the actuation shaft by the operator. Rotation of the actuation shaft opens and closes the discharge door of the hopper railcar through linkage assemblies. Preferably, a door operating linkage assembly is provided with an over-center closed position to hold the door in the closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.