Rotatable cutting bit

Button making

Patent

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Details

175410, E21C 912

Patent

active

045470200

ABSTRACT:
A rotatable cutting insert of the type having a shank depending from a head portion and having a hard insert mounted therein, includes an improved insert comprising a heat conducting base section disposed within a cavity in an intermediate section.

REFERENCES:
patent: 3299186 (1966-12-01), Buell
patent: 3455000 (1969-07-01), Flaherty
patent: 3830321 (1974-08-01), McKenry et al.
patent: 3970158 (1971-07-01), Black et al.
patent: 4176725 (1979-12-01), Shields
patent: 4199039 (1980-04-01), Thompson
patent: 4277106 (1981-07-01), Sahley
patent: 4307984 (1981-12-01), Patterson

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