Quick change power tool chuck
OwnerJohn L. DeRosainventor
Life of this patent
Estimating the term…
Abstract
An improved quick change power tool chuck is provided which is principally used on a wood working router but could also be used in many other power tool applications. The key features of the quick change chuck are the unique way that it secures the cutting bit from unwanted slippage, the large mechanical advantage thereof and the speed in which a cutting bit can be removed and replaced. The chuck can be aligned and attached to the power tool in the same manner that a standard collet is aligned and attached to the router spindle.
Claims19
A chuck device for holding a tool having a tool shaft or a connecting collet, said device comprising:
- a chuck body including a central longitudinally extending bore therein of a predetermined circumferential shape for receiving the shaft or collet of the tool, and a pivotable portion movable between a rest position wherein the predetermined circumferential shape of the bore is maintained and there is no engagement between the pivotable portion and the shaft or collet of a tool received in the bore, and an operative position wherein a bore-facing surface of said pivotable portion extends inwardly into said bore so as to engage the shaft or collet of a tool received in said bore;
- and
- a fastener member, received in an aperture in said chuck body, for, in use, causing pivoting of said pivotable portion of said chuck body to a said operative position thereof so that the bore-facing surface of said pivotable portion engages the shaft or collet of a tool received in bore,
- said chuck body further including a tapered portion through which said bore extends and said chuck device further comprising a nut adapted to be affixed to said tapered portion.
A chuck device for holding a tool having a tool shaft or a connecting collet, said device comprising:
- a chuck body including a central longitudinally extending bore therein of a predetermined circumferential shape for receiving the shaft or collet of the tool, and comprising a fixed portion and a pivotable portion including a pivot end connected to and formed integrally with said fixed portion, said pivotable portion being movable between a rest position wherein the predetermined circumferential shape of the bore is maintained and there is no engagement between the pivotable portion and the shaft or collet of a tool received in the bore, and an operative position wherein a bore-facing surface of said pivotable portion extends inwardly into said bore so as to engage the shaft or collet of a tool received in said bore;
- and
- a fastener member, received in an aperture in said chuck body, for, in use, causing pivoting of said pivotable portion of said chuck body to a said operative position thereof so that the bore-facing surface of said pivotable portion engages the shaft or collet of a tool received in bore,
- said chuck body further including a tapered portion through which said bore extends and said chuck device further comprising a nut adapted to be affixed to said tapered portion.
Dependencies are inferred from the claim text.