Hole-saw
AssigneeMarc Steven KATZ
InventorsDerek Alfred WARD, Marc Steven KATZ
Life of this patent
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Abstract
A hole-saw comprises a tubular body connectable at one end to inter alia a power drill and formed at its other end with an annular array of cutting teeth. A collar is positioned at the end of the tubular body remote from the cutting teeth, the perimeter of the collar extending generally normal to and beyond the perimeter of the tubular body.
Claims9
A hole-saw which comprises a tubular body connectable at one end to inter alia a power drill and formed at its other end with an annular array of cutting teeth, and a collar positioned at the end of the tubular body remote from the cutting teeth whose perimeter extends generally normal to and beyond the perimeter of the tubular body.
A hole-saw connectable to a power drill through a fitting from which the hole-saw can readily be detached, and a collar positioned at the end of the hole-saw to which the power drill is to be attached, the perimeter of said collar extending beyond the perimeter of the hole-saw and lying generally normal to said perimeter.
A hole-saw as claimed in any one of the preceding claims wherein the end of the tubular body remote from the cutting teeth is covered with a foam or sponge material.
A hole-saw as claimed in any one of the preceding claims wherein the inner surface of the collar includes at least two recesses which coincide with the positions of locating pins which protrude from the surface of a drive plate to which a drill may be releasably connected.
A hole-saw as claimed in any one of the preceding claims wherein the external surface of the tubular body may be at least partially lined with an abrasive material.
Dependencies are inferred from the claim text.