Patent ID: 8267483

Claim:
A shank bit, comprising: a bit tip; a carrier part including a shank portion and a receiving portion and a transition portion between the shank portion and the receiving portion, the transition portion having a larger diameter than the shank portion, and the receiving portion having a larger diameter than the transition portion, the carrier part having an outer end connected to the bit tip, the receiving portion being between the shank portion and the outer end; a head part rotatably receivable on the receiving portion of the carrier part; and a clamping sleeve received about the shank portion, the clamping sleeve having a larger-diameter relaxed position; and wherein the head part includes a cylindrical seat sized to be closely received about the receiving portion, and the head part includes a bore located axially inward of the cylindrical seat, the bore having a smaller-diameter for holding the clamping sleeve in a preloaded resilient state, the smaller-diameter of the bore being smaller than the larger-diameter of the relaxed position of the clamping sleeve; wherein the head part is movable axially outward relative to the carrier part between an installation position and an installed position; wherein, in the installation position, the bore of the head part is received about the clamping sleeve and holds the clamping sleeve in the preloaded resilient state; and wherein in the installed position, the bore of the head part is off of the clamping sleeve and the clamping sleeve is in the larger-diameter relaxed position.