Cutting by use of rotating axially moving tool – Tool or tool with support – Including detailed shank
Patent
1998-03-10
1999-10-19
Howell, Daniel W.
Cutting by use of rotating axially moving tool
Tool or tool with support
Including detailed shank
408227, 408231, 408239A, B23B 5102
Patent
active
059677112
ABSTRACT:
An improved self centering spade drill having at least three cutting blades extending radially outward from the center of the drill, the front edge of the blade constituting the cutting portion of the drill, the rear edge of the blade constituting the port end of the drill which are adapted to be received and supported by a drill holder.
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Howell Daniel W.
Lane William G.
LandOfFree
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