Overhead door with dual safety-edge
US6286257A · kind A · utility
15Cited by
23References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2000 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Feb 22, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/6818
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door assembly comprising a door body having a bottom edge. The door body is selectively movable up and down to open and close an opening. The door assembly further comprises a first sensor body and a second sensor body. Each sensor body is in communication with a door controller, and each sensor body has an impact portion responsive to an impact proximate the bottom edge of the door body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.