Patent ID: 9067309
Filing Date: 2015-06-30
Classification: B25B,F16H

Abstract:
1. A two-piece planet carrier for use in a power rotary hand tool, wherein the planet carrier is operatively connectable to a drive shaft of the tool, said planet carrier comprising: a drive portion having an axis of rotation and fixedly mountable to a motor rotor of the tool; and a pinned portion including a base and a crank pin extending eccentrically from the base, the crank pin having a center axis and operatively connectable to the drive shaft to provide rotation and torque to the drive shaft upon orbital rotation of the crank pin about the drive portion axis of rotation, the pinned portion rotatably engaged with the drive portion such that rotation of the rotor will cause the drive portion and the pinned portion to rotate relative to each other as a function of a load applied to the drive shaft such that an offset between the crank pin center axis and the drive portion axis of rotation is variable as a function of the load applied to the drive shaft, wherein the variance of the offset will vary a rotational speed and an amount of torque delivered to the drive shaft as a function of the load at drive shaft.