Patent ID: 9539715
Date: 2017-01-10
CPC Classifications: B25B,B25D

Claim:
1. An impact tool comprising: a hammer configured to rotate about a first axis and to pivot about a second axis different from the first axis, the hammer including a cam groove formed in an outer surface of the hammer; an actuator coupled to the cam groove of the hammer and configured to pivot the hammer about the second axis between a disengaged position and an engaged position based on a position of the actuator along the cam groove; and an anvil configured to rotate about the first axis in response to being impacted by the hammer when the hammer is in the engaged position; further comprising a controller configured to: sense a rotational speed of the hammer about the first axis; and cause the actuator to pivot the hammer from the disengaged position, in which the hammer rotates about the first axis without impacting the anvil, to the engaged position, in which the hammer impacts the anvil, in response to the rotational speed of the hammer achieving a threshold rotational speed.