Cable with integral sensing elements for fault detection
US10778285B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2018 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Jan 4, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B7/328
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are cable systems that include a cable defining a sensing path and comprising a working strand and one or more sensing strands, a signal source to impart a test signal between a first terminal and a second terminal, a sensor to detect the test signal, a transmitter to transmit the test signal to a receiver, and an indicator to generate a display indicative of the test signal. Certain preferred embodiments describe sensing strands that are arranged in alternating concentric layers and/or extend lengthwise in loops. Such configurations facilitate the detection of breakage, insults, excess tension, or excess bending in the cable. The sensing strands may include a fixed resistor to establish a known resistance and facilitate the detection of small resistive changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.