Device and method for sensing applied condition of a railroad handbrake
US8616341B2 · kind B2 · utility
5Cited by
12References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 16, 2011 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Nov 4, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61H13/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for indirectly sensing tension of a chain in a railroad handbrake includes an elongated bore formed through a holding pawl of the handbrake, sensor target attached to the holding pawl and a sensor mounted in close proximity to an upper end of the housing so as to sense the sensor target. The ratchet wheel of the handbrake positions the sensor target for operative sensing alignment with the sensor during at least partial handbrake application. A biasing member moves the sensor target away from the operative sensing alignment during handbrake release.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.