Controlling speed of an elevator using a speed reducing switch and governor
US9708157B2 · kind B2 · utility
4Cited by
15References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2012 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Mar 27, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A system and method for controlling speed of an elevator car in an elevator system is disclosed. The elevator car may have a speed governor adapted to trip when an electrical tripping point of the speed governor is reached. The elevator system may also have a control system for controlling operation of the elevator car, the control system providing a speed reducing switch adapted to trip when a software tripping point of the speed reducing switch is reached, the software tripping point being reached before the electrical tripping point of the speed governor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.