Safety switch and associated methods
US9824841B2 · kind B2 · utility
6Cited by
16References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2015 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Nov 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/9651
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cable pull switch includes a polychotomous sensor configured to provide a reading of at least one of a plurality of values, the reading corresponding to a tension on a pull cable or a linear displacement of an end of a pull cable. A processing device is configured to receive the reading, determine whether a value of the reading is outside of a non-tripped value window, a limit edge being a pull threshold value, and responsively generate an output signal indicative of a cable pull event. Other features and improvements are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.