Shoulder bushing for saw blades
OwnerFrancois Chianeseinventor
Life of this patent
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Abstract
A shoulder bushing is provided for concentrically fastening a circular saw blade having an oversized mounting aperture, to a spindle of a rotary power tool. The bushing includes a disk having a central bore sized and shaped for concentric engagement with the spindle. An annular shoulder located on one side of the disk has an outer diameter sized for receipt within the oversized central aperture of the saw blade. The disk is provided with an outer diameter large enough to be engaged by a concave flange disposed on the spindle, by which the disk is clamped to the spindle in superposed orientation with the saw blade.
Claims21
A saw blade assembly for concentrically fastening a circular saw blade having a relatively oversized central aperture, to a spindle of a rotary power tool, the assembly comprising:
- a circular saw blade having a central aperture that is oversized relative to the spindle;
- a bushing engaged with the saw blade;
- the bushing including a disk having a central bore in engagement with the spindle, wherein the engagement is configured to substantially maintain concentricity of central bore with the spindle during operational rotation of the spindle about its central axis;
- an annular shoulder disposed on a side of said disk, said annular shoulder received within the central aperture of the saw blade, wherein said receipt is configured to substantially maintain concentricity of the saw blade with the spindle during the operational rotation;
- and
- said blade and said disk clamped in superposed orientation with one another between a pair of flanges disposed on the spindle.
A bushing for concentrically fastening a circular saw blade having a relatively oversized central aperture, to a spindle of a rotary power tool, the bushing comprising:
- a disk having a central bore sized and shaped for engagement with the spindle, wherein said engagement substantially maintains concentricity of the central bore with the spindle during operational rotation of the spindle about its central axis;
- an abutment disposed on one side of said disk, said abutment sized and shaped for receipt within a correspondingly sized and shaped recess of the saw blade, wherein said receipt substantially maintains concentricity of the saw blade with the spindle during the operational rotation;
- and
- the disk configured for being engaged by a flange disposed on the spindle, wherein the disk is clamped on the spindle in superposed orientation with the saw blade.
A bushing for concentrically fastening a circular saw blade having a relatively oversized central aperture, to a spindle of a rotary power tool, the bushing comprising:
- disk means having a central bore sized and shaped for engagement with the spindle, wherein said engagement substantially maintains concentricity of the central bore with the spindle during operational rotation of the spindle about its central axis;
- abutment means disposed on one side of said disk, said abutment means sized and shaped for receipt within a correspondingly sized and shaped recess of the saw blade, wherein said receipt substantially maintains concentricity of the saw blade with the spindle during the operational rotation;
- the disk means adapted for engagement by a flange disposed on the spindle, wherein the disk means is clamped on the spindle in superposed orientation with the saw blade.
Dependencies are inferred from the claim text.