Automatic door control apparatus
US5123204A · kind A · utility
4Cited by
5References
3Claims
0Family size
Inventor
Key dates
| Filing date | May 14, 1991 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | May 14, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/40
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for controlling the opening and closing of an automatic door. The apparatus includes an L-shaped housing having a first portion disposed below ground level for housing a speed reduction mechanism and a second portion disposed above ground level and positioned behind a door post for housing a motor and control mechanism. The speed reducing mechanism includes a gear train to provide a desired reduced motor speed and the control mechanism is driven by the motor in synchronism with the speed reducing mechanism to control the opening and closing angle of the door.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.