Elevator system
US4124103A · kind A · utility
11Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1977 |
| Grant date | Nov 7, 1978 |
| Priority date | — |
| Expiry date | Mar 9, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/3492
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator system including an elevator car and electrical control for operating same. Capacitors continue to energize a car movement detector in the electrical control following an interruption in the electrical power supply, to enable any movement of the elevator car following such interruption to be detected and stored. A stored indication of car movement following an interruption in the electrical power supply is used to correct a car position device in the electrical control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.