Patent ID: 8381830
Filing Date: 2013-02-26
Classification: B23B,B25B,Y10T

Abstract:
1. A power tool, comprising: a housing; an electric motor disposed in the housing; a spindle drivingly attached to the electric motor, the spindle having a cavity adapted for receiving a bit therein and a window extending through the spindle in communication with the cavity; a retention device including a bit engaging member disposed within the housing and operable to extend through the window and retain a bit within the cavity; an actuator operable by a user externally of the housing to disengage the bit engaging member from retaining a bit received in the cavity; and a mechanical interconnection system operably coupled between the actuator and the retention device to actuate the retention device in response to the actuator, the mechanical interconnection being disposed within the housing; wherein when a bit is inserted into the cavity, the bit causes the retention device to move rearwardly relative to an axis of rotation of the spindle and the actuator need not be actuated in order to fully load the bit into the cavity and be retained by the bit engaging member.