Call registration apparatus in an elevator system
US5074385A · kind A · utility
6Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1990 |
| Grant date | Dec 24, 1991 |
| Priority date | — |
| Expiry date | Jun 25, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B3/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A call registration apparatus for an elevator system includes a call registration lamp and a car call button disposed in an elevator car and connected by a common signal line to a CPU. When the call button is pressed a first time, the CPU registers a call and turns on the call registration lamp. When the elevator car reaches a floor, the CPU makes the call registration lamp flicker. If the call button is pressed while the lamp is flickering, the CPU performs a door opening or door closing operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.