Patent ID: 6311787
Filing Date: 2001-11-06
Classification: B25F

Abstract:
A power driven rotary device, which comprises:a housing having at least one fixed wedging surface;a drive carrier mounted for rotation within the housing;a powered driver located within the housing for rotating the drive carrier;a drivable output member formed with an axis and located within the housing and mounted therein for rotation;the drivable output member including at least one movable wedging surface located in spatially facing relation to the fixed wedging surface;the drive carrier for rotating the drivable output member upon rotation of the drive carrier;at least one wedging element formed with an axis and located for free movement between the fixed wedging surface and the at least one movable wedging surface for movement with the drive carrier and the drivable output member when the drive carrier and the drivable output member are rotating at substantially the same speed, and for being wedged between the fixed wedging surface and the at least one movable wedging surface in a wedging mode when the drivable output member is rotating at a speed different from the speed of the drive carrier to lock the drivable output member with the housing; andmeans for maintaining the axis of the at least one wedging element in a prescribed orientation relative to the axis of the drivable output member.