Elevator system
US4120381A · kind A · utility
6Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1977 |
| Grant date | Oct 17, 1978 |
| Priority date | — |
| Expiry date | Feb 24, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B2201/463
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator system including an elevator car mounted in a building to serve the floors therein. A car call station in the elevator car includes a plurality of car call pushbuttons and associated lamps. Each pushbutton requires only a single set of contacts and a single conductor to register a car call, drive the associated lamp, and to provide a "button actuated" signal each time the pushbutton is actuated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.