Patent ID: 7740249

Claim:
In a holder for replaceable tools, the improvement comprising: a body having an elongated axis with an opening extending along said axis for receiving a work tool and said body having two axially spaced apart and radially extending holes extending through said body to said opening, two circular members on said body and with said members being axially movable relative to said body and to each other along said axis, each of said members presenting a camming ramp disposed radially outward with respect to each of said holes and being respectively faced toward said opening and being respectively axially movable toward and away relative to the respective locations of said holes, two balls respectively disposed in said two holes and being in respective contact with each of said camming ramps and exposed to said opening and with each of said balls also being separately positionable in contact with the work tool at said spaced apart locations, and two springs disposed and arranged to have each thereof exert axial force on only a respective one of said members for urging said members separately and independently of each other axially and thereby urge said balls into respective contact with the work tool for holding the work tool free of movement relative to said axis.