Control apparatus for elevator
US4520906A · kind A · utility
8Cited by
7References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 3, 1984 |
| Grant date | Jun 4, 1985 |
| Priority date | — |
| Expiry date | Jul 3, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/308
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control apparatus for an elevator comprising loss impartation means to impart a loss to a hoisting machine for a cage; cage position detection means to detect the position of the cage; and control means to control the loss impartation means on the basis of an output signal of the cage position detection means so as to adjust the loss in accordance with the position of the cage; wherein by adjusting and controlling the loss, the resonance of a mechanical system composed of the cage, a balance weight, a hoisting rope, etc., is suppressed to improve riding conditions in the elevator car.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.