RELEASE MECHANISM FOR INDUSTRIAL DOORS AND A METHOD FOR PROVIDING SEPARATION OF AN INDUSTRIAL DOOR

摘要

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 it s doorway blocking positions, the releasing mechanism including a roller mount ed 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 breakaw ay force to the extension member, thereby allowing the roller to escape from th e track when a breakaway force is applied to the extension member, the breakaw ay force being defined as a force that has a component perpendicular to the pla ne of the door above a certain magnitude.