Cable tension monitor
US11440766B2 · kind B2 · utility
0Cited by
17References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2019 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Aug 26, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sensor apparatus for a movable barrier system having a rotatable drum and an elongate member that winds up on and pays out from an external surface of the rotatable drum. The sensor apparatus includes a base portion, a sensing portion, and a controller. The sensing portion senses a first spaced apart proximity of the elongate member relative to the sensing portion and a second spaced apart proximity of the elongate member relative to the sensing portion. The controller detects a change in the proximity of the elongate member relative to the sensing portion without the elongate member contacting the sensing portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.