Elevator system having microprocessor-based door operator
US4832158A · kind A · utility
879Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1987 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Dec 3, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/45242
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An elevator system has a door operator with a door operator motor and a dedicated microprocessor for storing door open and door close cycles. The microprocessor initiates door open and close cycles responsive to external door open and door close commands. Preferably the microprocessor stores a plurality of door closed cycles in which the elevator controller selects one of the cycles when issuing a door closed command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.