Hopper railcar with automatic individual door system
US7832340B2 · kind B2 · utility
1Cited by
22References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2007 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Jul 16, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61D7/28
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The door operating system of the present invention can be applied to new railcar or retrofitted to existing railcar designs. The hopper car will have a pair of doors on opposed sides of the center sill which are connected through a door spreader. The pneumatic, individual door operating system is connected to the door spreader through an adjustable spreader fulcrum in which the sliding adjustment may add in a proper connection force or tension between the door operating system and the individual doors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.