Patent ID: 9175513
Filing Date: 2015-11-03
Classification: A62C,E05F,E05Y,E06B

Abstract:
1. An overhead coiling door method of operation comprising the steps of: providing a primary power supply to a power operated overhead coiling door; backing up the primary power supply with a backup power supply; beginning an alarm sequence of operation upon receiving a notification to activate; disengaging a powered drive from the door upon the occurrence of a first predetermined event thereby disengaging powered drive operation and allowing manual operation of the door, wherein the door is balanced to gravity close when the powered drive is disengaged; and reconnecting the powered drive upon the occurrence of a second predetermined event; wherein the alarm sequence of operation comprises powering the door to a preset height, pausing the door at the preset height for a preset time, then power closing the door; the first predetermined event comprises completing a preset number of alarm sequence of operation under backup power; and the second predetermined event comprises restoration of primary power.