Drilling bit

Details Drilling bit Drilling bit

1978-11-01

1980-08-19

Bilinsky, Z. R.

Cutting by use of rotating axially moving tool

Tool-support with means to permit positioning of the tool...

Pivotable tool

407 62, 408713, B23B 5100, B23C 520

Patent

active

042181623

ABSTRACT:
A drilling bit has cutting edges radiating from its axis, each being a segmental part of a circular cutter the axis of which is substantially tangential to a circle centered on the bit axis, the cutters being at different distances from the bit axis. The cutters may be rotated to enable worn cutting edges to be replaced and the extremities of all cutting edges are substantially in a plane normal to the bit axis.

REFERENCES:
patent: 3751177 (1973-08-01), Faber
patent: 3759625 (1973-09-01), Iversen
patent: 3963365 (1976-06-01), Shallenberger, Jr.

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