Plastic grip boots for chucks
AssigneePower Tool Holders Incorporated
InventorsLouis M. Shadeck, Robert O. Huff, Valerie Owens
Life of this patent
Estimating the term…
Abstract
A plastic grip boot for a metal part of a chuck, typically a keyless chuck, is disclosed. The grip boot is insert molded to a rotatable metal part of a chuck, the metal part extending under the grip boot for the axial length of the grip boot which is normally gripped by the user in order to provide support to the grip boot. During molding, the plastic preferably flows into surface features of the metal part to help secure the grip boot to the metal part. The grip boot improves user grip of the metal part during operation of the chuck to adjust the spacing of the chuck jaws.
Claims19
In a chuck having a longitudinal axis, a first member substantially concentric with said axis, a second member substantially concentric with said axis, a plurality of jaws spaced from one another around said axis, and means responsive to relative rotation of said first and second members about said axis for changing the spacing between said jaws, at least one of said first and second members being metal and having a radially outer surface which is substantially concentric with said axis, the improvement comprising:
- a plastic grip boot which is insert molded to said outer surface of said metal member, said outer surface of said metal member extending parallel to said axis and under said grip boot for the axial length of said grip boot which is normally gripped by a user during adjustment of said spacing between said jaws, in order to provide support for said grip boot along the axial length of said grip boot which is normally gripped by the user.
In a chuck having a longitudinal axis, a first member substantially concentric with said axis, a second member substantially concentric with said axis, a plurality of jaws spaced from one another around said axis, and means responsive to relative rotation of said first and second members about said axis for changing the spacing between said jaws, at least one of said first and second members being metal and having a radially outer surface which is substantially concentric with said axis, the improvement comprising:
- a plastic grip boot which is insert molded to said outer surface of said metal member, said outer surface of said metal member having surface features such that a circumferential path of fixed radius from said axis passes alternately through regions of said metal member and regions of plastic from said grip boot as said path is traced circumferentially around said axis.
Dependencies are inferred from the claim text.