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US 2001/0043840 A1Published application
Drill bit tail
OwnerJames L. Wienholdinventor
Life of this patent
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Abstract
The invention is a tool bit for use in a socket or chuck mechanism. The tool bit includes an elongated shank having an operative tip end and an opposite tail end. A polymer jacket is molded about the tail end of the shank, and the jacket in the lateral cross-section, has a hex-shaped outer surface.
Claims11
A tool bit for use in a socket or chuck mechanism, the tool bit comprising:
- an elongated shank, the elongated shank having an operative tip end and an opposite tail end;
- and
- a polymer jacket molded to extend along a portion of the tail end of the shank, wherein, in lateral cross section, the jacket has a hex-shaped outer surface.
A method for fastening a polymer jacket onto a metal tool bit shank comprises the steps of:
- forming a portion of a tail end of the tool bit shank to be non-circular in lateral cross-section;
- and
- molding a polymer composition about the tail end of the tool bit, including at least the non-circular portion thereof, to define a polymer jacket, wherein a lateral cross section of the jacket which has a hex-shaped outer surface.
Dependencies are inferred from the claim text.