Patent ID: 8328204

Claim:
In a power driver, a power take off (PTO) arrangement to open/close a chuck, the PTO arrangement comprising: a chuck actuating member and a coaxial PTO actuator member axially displaceable along, yet rotationally locked together about, a first axis of the power driver; an input member, supporting jaws of the chuck, and concentric to at least a portion of the chuck actuating member and a portion of the PTO actuator member; relative rotation between the chuck actuating member and the input member selectively being prevented and being caused by first and second configurations of the chuck actuating member and the PTO actuator member, respectively; and a PTO-control member, displaceable between first and second positions along a second axis parallel to the first axis, and coupled to adjust at least one of the chuck actuating member and the PTO actuator to achieve the first and second configurations, respectively, wherein the PTO arrangement further includes a sun gear, a carrier, planet gears and a ring gear; the sun gear being selectively engageable with the PTO actuator member.