Elevator apparatus having rescue operation controller
US8316996B2 · kind B2 · utility
7Cited by
14References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2007 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Oct 15, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/027
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In an elevator apparatus, a rescue operation for a car is performed by a rescue operation controller. The rescue operation controller obtains a rescue operation voltage value and applies a voltage having the rescue operation voltage value to a brake coil in response to a signal from a speed detector at a time of the rescue operation for the car. The rescue operation voltage value is a value of the voltage necessary to reduce braking force of a brake device to move the car by using a state of imbalance between the car and a counterweight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.