Device in roll-up doors
US4889176A · kind A · utility
8Cited by
1References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 16, 1988 |
| Grant date | Dec 26, 1989 |
| Priority date | — |
| Expiry date | Sep 16, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/40
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Reinforcement elements intended for use in door leaves of the kind consisting of fabric or similar flexible material. The reinforcement elements preferably are in the shape of tubes and have end pieces attached to their ends for cooperation with a profiled guiding member mounted in the door-frame of the door leaf in such a manner that when the door is being closed said reinforcement elements will be positioned at different predetermined levels of the door leaf, thus strengthening the latter to prevent bulging of the door leaf when the latter is exposed to heavy winds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.