Chuck with internally threaded jaw in a PTO application

A power driver comprising:

• a housing;
• a tool chuck having
• an input shaft mounted on the housing so that the input shaft is rotatable relative to the housing, the input shaft supporting threaded chuck jaws,
• a chuck actuating shaft mounted for rotation on the input shaft, the chuck actuating shaft being screw coupled to the threaded chuck jaws;
• and
• power take off means for adjusting into
• a DRILL DRIVE MODE to rotationally drive the input shaft and the chuck actuating shaft together as a unit, and
• a CHUCK MODE to rotationally drive the chuck actuating shaft relative to the input shaft;
• wherein the power take off means is internal of the housing.

A power driver comprising:

• a tool chuck having
• an input shaft supporting threaded chuck jaws, and
• a chuck actuating shaft mounted for rotation on the input shaft;
• and
• a power take off mechanism having
• a power take off actuator shaft rotationally fixed to the chuck actuating shaft,
• an output coupling rotationally fixed to the input shaft,
• a power take off drive disk rotationally fixed to the power take off actuator shaft,
• a disk confronting the power take off drive disk, and
• a shift ring mounted for movement to selectively engage with and rotationally lock to the output coupling, the power take off drive disk and the disk.