Boring or penetrating the earth – Bit or bit element – With helical-conveying portion
Patent
1978-04-10
1980-01-29
Pate, III, William
Boring or penetrating the earth
Bit or bit element
With helical-conveying portion
175410, 299 87, E02D 1714, E21B 904, E21C 114
Patent
active
041857070
ABSTRACT:
An auger is disclosed having flighting outer edges protected by overlying, wear resistant bits applied in a continuous manner. The leading edge of the flighting is protected by wear resistant bits applied along the edge. A point carries ribs of hard material such as carbide, the edge of which constitutes a cutting edge. The bits are applied with solder.
REFERENCES:
patent: 2863640 (1958-12-01), Petersen
patent: 3140748 (1964-07-01), Engle et al.
patent: 3202228 (1965-08-01), Schuster
patent: 3422915 (1969-01-01), Watts
patent: 3710877 (1973-01-01), Michasiw
patent: 3937317 (1976-02-01), Fleury, Jr.
patent: 4074780 (1978-02-01), Gilbert
Givnan, Jr. James D.
Pate, III William
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