Elevator cord health monitoring
US9731939B2 · kind B2 · utility
3Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2013 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Feb 21, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/08
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method of fault detection of a belt or rope includes connecting a fault detection unit to at least a portion of a belt or rope including a plurality of wires arranged in a plurality of strands and/or cords. At least the portion of the belt or rope is subjected to an AC voltage of high frequency range and an electrical impedance of the portion of the belt or rope is measured via the fault detection unit. Using at least the measured electrical impedance of the portion of the belt or rope, a fault condition of the belt or rope is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.