Patent attributes
An anti-back drive system preferably includes a drive housing, a drive ring, a lock ring and an output pinion. The drive housing includes a drive counterbore. The drive housing is secured to an electric motor. The drive ring preferably includes a base member and a plurality of drive projections. The drive ring is secured to a drive shaft of the electric motor. The lock ring includes a plurality of inward facing cam surfaces and a plurality of inward facing loop projections. The output pinion includes a drive gear and a plurality of drive fingers, which extend radially outward from the output pinion. The plurality of inward facing cam surfaces are sized to receive an end perimeter of said plurality of drive fingers. A push on clip is secured to the drive shaft to retain the drive ring, the lock ring and the output pinion on the drive shaft.
