Boring or penetrating the earth – With receptacle
Patent
1979-10-11
1981-10-27
Novosad, Stephen J.
Boring or penetrating the earth
With receptacle
175234, 175242, 175418, E21B 700, E21B 1036, E21B 2700
Patent
active
042968232
ABSTRACT:
A cable tool (10) includes a tool bit (12), a drill stem (14) and an adapter (16). Openings (32) are formed in a cutting face (18) of the tool bit (12) and inclined bores (34) extend upwardly within the tool bit (12) to an upwardly extending bit passageway (36). A retention chamber (46) is formed in the drill stem (14) communicating with the bit passageway (36) for storing rock and earth particles. An adapter passageway (52) communicates with the retention chamber (46) and includes a liquid drain (24) to drain water from the adapter passageway (52) and the retention chamber (46). Optionally, a flapper valve (64) may be mounted within the retention chamber (46) adjacent the bit passageway (36).
REFERENCES:
patent: 212218 (1879-02-01), Manning
patent: 947862 (1910-02-01), Steel
patent: 1167225 (1916-01-01), Smith
patent: 1300346 (1919-04-01), Church
patent: 1399108 (1921-12-01), Garrison
patent: 1513083 (1924-10-01), Baker
patent: 1940866 (1933-12-01), Humason
patent: 2019978 (1935-11-01), Hunt
patent: 2148373 (1939-02-01), Garfield
patent: 2171539 (1939-09-01), Burns
patent: 2214970 (1940-09-01), Mooney
patent: 2330157 (1943-09-01), Stokes
patent: 2646128 (1953-07-01), Reyholds
patent: 2721059 (1955-10-01), Wilcox
patent: 2787327 (1957-04-01), Pearson
Novosad Stephen J.
Varel Manufacturing Company
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