Apparatus and method of determining overspeed of an elevator car
US6253879A · kind A · utility
11Cited by
17References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1998 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Dec 22, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An apparatus and method for determining the speed of an elevator car. A radar speed sensor (30) is provided determining the velocity of an elevator car (2). The speed sensor produces a signal which is processed by a processor (52) and compared to a threshold speed value by speed detection module (70). The speed detection module produces an overspeed signal (72) triggering the operation of actuator (34) and safety brake (26).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.