Patent ID: 7690874

Claim:
A rotary tapered tool holder, comprising: a body including a first contact outer surface formed at a first taper angle with respect to a central, longitudinal axis of the body, a second contact outer surface formed at a second taper angle with respect to the central, longitudinal axis of the body, and a flange contact surface substantially perpendicular to the central, longitudinal axis of the body; an adapter sleeve disposed about a portion of the body, the adapter sleeve including an inner surface and an outer surface, the inner surface including a first contact inner surface formed at approximately the first taper angle, a second contact inner surface formed at approximately the second taper angle, the outer surface formed at a third taper angle; and a fastener capable of passing through an aperture in the adapter sleeve and being received in a bore in the body for limiting movement of the adapter sleeve in a direction along the central, longitudinal axis of the body, wherein the first, second and third taper angles are different from each other to cause an interference fit between the adapter sleeve and a tapered bore of a clamping receptacle when the rotary tapered tool holder is assembled into the clamping receptacle, and wherein the flange contact surface of the body engages a face contact surface of the clamping receptacle when the rotary tapered tool holder is assembled into the clamping receptacle.