Roller speed sensor with magnets and sensors
US12297079B2 · kind B2 · utility
0Cited by
0References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2020 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Mar 14, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/44
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A roller speed sensor for detecting a speed of an elevator car of an elevator system including: a first roller configured to rotate along a guide rail of the elevator system when the elevator car moves up or down an elevator shaft, the first roller including: one or more magnets; and a first sensor pair located proximate the first roller, the first sensor pair being configured to detect a rotational speed of the one or more magnets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.