Dual safety-edge for an overhead door
US6427382B2 · kind B2 · utility
14Cited by
24References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2001 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Aug 6, 2021 |
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 is disclosed. The door body is selectively movable up and down to open and close an opening. The door assembly further comprises a safety edge attached to the bottom edge of the door body, the safety edge being an extrudate extruded from a deformable material and comprising a first and second chamber formed in integrated cooperative redundancy in the extrudate, wherein the first chamber comprises a first sensor body and the second chamber comprises a second sensor body, each sensor body being responsive to an impact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.