Cutting by use of rotating axially moving tool – Tool or tool with support – Including detailed shank
Patent
1996-04-22
1998-07-28
Howell, Daniel W.
Cutting by use of rotating axially moving tool
Tool or tool with support
Including detailed shank
408239R, 408239A, 279 79, 7165, 7158, B23B 5110
Patent
active
057854688
ABSTRACT:
A drill for interchangable use on a screw driver bit. The drill is mounted on shank, the shank having an opening at the end remote from the drill for rapid placement of the shank on and removal of the shank from the screw driver bit locked in the chuck of an electric powered rotating unit to permit drilling a screw hole and then, upon removal of the drill from the screw driver bit using the screw driver bit for installation of a screw. A countersink may be also be mounted on the shank with the drill.
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Chuck-Mate Drill-N-Drive Screw Driving System-Backer.
Howell Daniel W.
Tsai Henry W. H.
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