Rock cutting tip inserts

Details Rock cutting tip inserts Rock cutting tip inserts

1975-04-02

1980-03-25

Pate, III, William F.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

51309, 76DIG11, 175410, 407118, E21C 3518, E21B 936

Patent

active

041947908

ABSTRACT:
The rock cutting tip insert of a rock cutting tool comprises two layers, the front layer being harder than the backing or base layer by at least one hundred units on the Vickers Hardness scale.

REFERENCES:
patent: 1965950 (1934-07-01), Walker
patent: 2033594 (1936-03-01), Stoody
patent: 2201159 (1940-05-01), Clow
patent: 3010709 (1961-11-01), Bentley et al.
patent: 3127945 (1964-04-01), Bridwell et al.
patent: 3260579 (1966-07-01), Scales et al.
patent: 3368882 (1968-02-01), Ellis et al.
patent: 3790353 (1974-02-01), Jackson
patent: 3869319 (1975-03-01), Ishihara
patent: 3888637 (1975-06-01), Taguchi et al.
patent: 3932952 (1976-01-01), Helton et al.
All Carbide Boring Bar, American Machinist, May 23, 1946, p. 115, H. E. York.

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