Chipper-toothed hole saw

Details Chipper-toothed hole saw Chipper-toothed hole saw

1997-04-07

1999-12-28

Gray, W. Donald

Cutting by use of rotating axially moving tool

Tool or tool with support

Having axial, core-receiving central portion

144150, 144219, 408206, B23B 2710

Patent

active

060072792

ABSTRACT:
A hole-cutting device for attachment to a portable electric drill or similar rotating machine. The device has a cylindrical body with a rearward edge and a forward edge; a mounting plate is affixed across the rearward edge, and a series of chipper teeth are affixed about the forward edge. Each chipper tooth has a transverse cutting edge and a second cutting edge in substantial alignment with the wall of the cylinder, but alternate chipper teeth have second cutting edges displaced inwardly and outwardly from the cylindrical member.

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patent: 3825362 (1974-07-01), Hougen
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patent: 4539750 (1985-09-01), Jarvi et al.
patent: 4616965 (1986-10-01), Anderson et al.
patent: 4952102 (1990-08-01), Hougen
patent: 5451128 (1995-09-01), Hattersley

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