Enhanced grip tool holding chuck
AssigneePower Tool Holders Incorporated
InventorsKenneth M. Montjoy, Mark S. Huggins, Roger J. Kanaan
Life of this patent
Estimating the term…
Abstract
A tool holding device for holding a tool bit to a drive spindle includes a body member having an axially extending bore defined therein for receipt of a tool shank. The body member includes a plurality of axially extending segments defining the bore. The segments are defined by axially extending slits in the body member. The slits extend from a front face of the body member rearward. The segments are radially compressible to grip upon a tool shank inserted into the bore when a radially compressive force is applied to the segments in the area of the slits. The bore defined by the segments has a tapered diameter that is greater at the front face of the body member and tapers to a lesser diameter in the axially rearward direction.
Claims15
A tool holding device for holding a tool bit to a drive spindle of a power tool, comprising:
- a body member having an axially extending bore defined therein for receipt of a cylindrical tool bit shank, said body member comprising a plurality of axially extending segments defining said bore, said segments defined by slits in said body member extending axially rearward from a front face of said body member, said segments being radially compressible to grip upon a tool shank inserted into said bore;
- means for radially compressing said segments upon actuation of said device so that said segments grip and hold a tool shank inserted into said bore;
- and
- said bore defined by said segments comprising a tapered diameter that is greater at said front face of said body member and tapers to a lesser diameter in the axially rearward direction, said taper being defined such that as said segments are compressed radially inward contact is established initially and maintained between said segments and the tool bit shank generally at an axially rearward end of said slits.
A chuck device for holding a cylindrical tool bit shank to a drive spindle of a power tool, comprising:
- a body member having an axially extending bore defined therein for receipt of a tool bit shank, said body member comprising a plurality of axially extending segments defining said bore, said segments defined by slits in said body member extending axially rearward from a front face of said body member, said segments flexible radially inward at a point axially rearward of an end of said slits;
- means for actuating said chuck to radially compress said segments at an axial position forward of said flex point;
- and
- said bore defined by said segments comprising a tapered diameter that tapers from a larger diameter at said front face of said body member to a smaller diameter at said end of said slits, said taper being defined such that as said segments are compressed radially inward contact is established initially and maintained between said segments and the tool bit shank generally at an axially rearward end of said slits.
Dependencies are inferred from the claim text.