Patent ID: 8770255
Filing Date: 2014-07-08
Classification: B66D,E05F,E05Y,E06B,F16H

Abstract:
1. A method of controlling operation of a door rollable onto a door shaft, the method comprising: rotationally fixing a sun gear to a governor of a release assembly; mating a plurality of planetary gears around the sun gear and within a ring gear affixed to a drive sprocket; rotating the drive sprocket to rotate the plurality of planetary gears around the sun gear to cause an axis of one of the plurality of planetary gears to revolve about an axis of the governor, the same axis as the central axis of the sun gear; rotating a hub assembly onto which the plurality of planetary gears are rotationally fixed, wherein the hub assembly, the planetary gear, the sun gear, and the governor are enclosed in a single assembly housing positioned and installed on one end of the door shaft; and rotating the door shaft affixed to the hub assembly to operate the door.