Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Frictionally engaging sides of opening in work
Patent
1995-05-25
1997-07-22
Bishop, Steven C.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Frictionally engaging sides of opening in work
408 82, 408112, B23B 5100
Patent
active
056497938
ABSTRACT:
The present invention is a self centering drilling device and is more particularly concerned with the aspect of precise location for removal of material with various sizes of drill bits, using the same drill bit holder.
REFERENCES:
patent: 347925 (1886-08-01), Deno et al.
patent: 2224480 (1940-12-01), Kartarik
patent: 2294303 (1942-08-01), Jagow
patent: 2296087 (1942-09-01), Burns, Jr.
patent: 2792726 (1957-05-01), Vick
patent: 5318390 (1994-06-01), DalBianco
Asher Jeffrey S.
Ericksen Colin W.
Hardwick Richard E.
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