Release mechanism for industrial doors
US6148897A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1999 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Mar 29, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/585
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A release mechanism for use in combination with an industrial door, which includes an extension member extending across the doorway opening when the door is in its doorway-blocking positions, the releasing mechanism including a roller mounted for movement with the extension member, and a track including a guideway for receiving the roller and guiding it during normal door operation, the roller and track being movable relative to each other upon application of a breakaway force to the extension member, thereby allowing the roller to escape from the track when a breakaway force is applied to the extension member, the breakaway force being defined as a force that has a component perpendicular to the plane of the door above a certain magnitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.