Garage door operation control apparatus
US4365250A · kind A · utility
41Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1980 |
| Grant date | Dec 21, 1982 |
| Priority date | — |
| Expiry date | Apr 15, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A garage door operation control apparatus includes a door operating system for opening and closing the main door of a garage, a main detection circuit for detecting the open or closed condition of the main door, an auxiliary detection circuit for detecting an open condition of a window or an auxiliary door of the garage, a fire in the garage or generation of a special gas therein, an alarm and a signal processing circuit. Electrical signals from the detection circuit are logically analyzed thereby to control the door operating system and the alarm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.