Method and apparatus for door operation remote control
US4496942A · kind A · utility
37Cited by
6References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1982 |
| Grant date | Jan 29, 1985 |
| Priority date | — |
| Expiry date | Mar 5, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/08
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Apparatus and method for door operation remote control. A radio transmitter transmits a door operation command signal for a predetermined time when the operator operates a switch, irrespective of a turn-on time of the switch. Upon receipt of the door operation command signal from the radio transmitter, a door operation control signal is generated to effect the operation of a door.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.