| 摘要 |
<p>An improved release mechanism for use in combination with an industrial door and a method for providing separation of 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.</p> |
