Patent ID: 8720909

Claim:
A quick-release bit adapter comprising: a body including first and second ends spaced along a longitudinal axis, with the first end of the body adapted to engage with a bit, with the second end of the body adapted to be rotated to drive the bit to rotate, with the body including a non-circular driving hole extending from the first end towards the second end of the body along the longitudinal axis, with the driving hole adapted to removably receive the bit, with the body further including a sliding groove in communication with the driving hole and intermediate the driving hole and the second end of the body along the longitudinal axis, with a through-hole extending from an outer periphery of the first end of the body through the sliding groove, with at least one protrusion extending inward from an inner periphery of the driving hole towards the longitudinal axis, with the bit abutting and stopped by said at least one protrusion when the bit is received in the driving hole, with said at least one protrusion having a spacing to an end face of the first end of the body along the longitudinal axis; and a magnetic device slideably received in the sliding groove of the body, with the magnetic device being controllable by a user through the through-hole to slide along the longitudinal axis between first and second positions, wherein when the magnetic device is in the first position, the magnetic device attracts and comes in contact with the bit, preventing the bit from disengaging from the driving hole of the body, and wherein when the magnetic device is in the second position, the magnetic device is disengaged from the bit, allowing removal of the bit from the driving hole of the body.