Patent ID: 8807880

Claim:
A toolholder for mounting within a toolholder support member having a longitudinal axis wherein the toolholder comprises a body having: a) a front end for holding a cutting tool; b) a back end for supporting the body within the toolholder support member; wherein the back end has a forwardly facing shoulder and a frusto-conical shank extending therefrom, wherein the shank is hollow defining a shank cavity and wherein the shank has a shank wall with radially extending perforations having angled forwardly facing surfaces adapted to be engaged by radially displaced balls; and c) at least one internal passageway extending through the front end of the body and at least one receiving passageway extending from the internal passageway through the shank wall of the frusto-conical shank to the exterior of the shank defining a shank orifice; wherein the passageway does not intersect with the shank cavity.