OVERHEAD DOOR BACKUP SPRING SYSTEM

摘要

The present invention essentially comprises a spring engagement system of an overhead door backup spring system operable upon failure of a main spring, and method of using the spring engagement system. The spring engagement system has a spring engagement unit operably associated with a spring, and an engagement unit operably associated with the spring engagement unit. The engagement unit is engageable with the spring engagement unit in an engaged position upon activation thereof. The engagement unit can transfer torque from the spring to a shaft in the engaged position. The engagement unit is actuating by engagement of an activation unit, which is actuated upon failure of the main spring associated with an overhead door.

主权项

1. A spring engagement system comprising:
a spring engagement unit operably associated with a spring; and an engagement unit operably associated with said spring engagement unit, said engagement unit being engageable with said spring engagement unit in an engaged position upon activation; wherein said engagement unit having a configuration to transfer torque from said spring to a shaft in said engaged position.