Boring or penetrating the earth – Bit or bit element – With fluid conduit lining or element
Patent
1989-03-20
1990-09-04
Dang, Hoang C.
Boring or penetrating the earth
Bit or bit element
With fluid conduit lining or element
175394, 175401, 175408, E21B 1044, E21B 1060
Patent
active
049536427
ABSTRACT:
A rock drill bit having an elongated tubular body with a drilling head portion at one end and a trailing opposite end portion, the head end portion having attached hardened portions for engaging and drilling a work surface, at least one opening through the head end portion for drilling fluid to pass therethrough to the region of the drill face, at least one side of the bit having an axially extending cutout therealong forming an elongated passage with the surface of a bore being drilled through which the drilling fluid and drilling residue carried thereby can pass as it moves rearwardly along the drill bit away from the drill face, and transversely extending grooves formed in the portions of the body between the cutouts dividing the portions into a plurality of spaced outwardly extending body portions.
REFERENCES:
patent: 54226 (1866-04-01), Smith
patent: 1307525 (1919-06-01), Trebert
patent: 1542880 (1925-06-01), Hobbs
patent: 1703390 (1929-02-01), Duffy
patent: 1734469 (1929-11-01), Journeay
patent: 1734672 (1929-11-01), Harralson
patent: 1955768 (1934-04-01), Powell
patent: 2215494 (1940-09-01), Athy
patent: 2519861 (1950-08-01), Turner
patent: 2728558 (1955-12-01), Tengberg
patent: 2735116 (1956-02-01), Mueller
patent: 2821364 (1958-01-01), Godfrey
patent: 2888845 (1959-06-01), McClinton
patent: 3145789 (1964-08-01), Lawry
patent: 4285618 (1981-08-01), Shamley, Jr.
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