Conical bit

Details Conical bit Conical bit

1986-03-17

1987-10-27

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

175410, 299 86, E21C 3518

Patent

active

047025255

ABSTRACT:
A miner bit has a base portion formed of two different metallic members welded together, one being adapted to be mounted to a continuous mining machine and the other having a frustoconical end portion welded to a frustoconical tungsten carbide bit.

REFERENCES:
patent: 3476438 (1969-11-01), Bower
patent: 3519309 (1970-07-01), Engle et al.
patent: 3599737 (1971-08-01), Fischer
patent: 3932952 (1976-01-01), Helton et al.
patent: 4168923 (1979-09-01), Vezirian
patent: 4277106 (1981-07-01), Sahley
patent: 4474488 (1984-10-01), Pinkerton et al.
patent: 4627665 (1986-12-01), Ewing et al.
Smith Mining Tools, "Conical Mining Bits", 10/1982.
"Tooth-Type Insert Bits Get More Work", The Oil and Gas Journal, vol. 67, No. 30, 7-1969.

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