Rotatable cutting bit

Details Rotatable cutting bit Rotatable cutting bit

1983-04-29

1985-02-05

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Tooth mounted on helical head portion or head with helical...

175410, E21C 3518

Patent

active

044975201

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 having a conically shaped tip section, a base section and an intermediate section with the maximum diameter of the tip section smaller than the diameter of the base section.

REFERENCES:
patent: 3957307 (1976-05-01), Varda
patent: 3997011 (1976-12-01), Staroba
patent: 4216832 (1980-08-01), Stephenson

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