Non-powered trailed switch detector for railroad track switching equipment
US7147189B2 · kind B2 · utility
2Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2005 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Feb 11, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L5/107
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An apparatus is provided for sensing movement of a point rail away from a stock rail by a selected distance, by closing a switch to shunt a track circuit, with means for resetting the apparatus to open the switch only after manual resetting of the point rail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.