GPS controlled multiple source material application
US6526339B1 · kind B1 · utility
24Cited by
21References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2000 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Sep 8, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L2205/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A GPS controlled multiple source material application or ballast spreading system includes tracking the position of a plurality of ballast hopper cars using GPS derived coordinates and controlling the opening of multiple ballast doors to spread ballast on desired sections of track for railroad maintenance. The process involves tracking the current hopper loads, the opened or closed state of the ballast doors, and the concurrent amount of ballast which has been spread on the desired track sections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.