Boring or penetrating the earth – Boring without earth removal
Patent
1983-05-23
1985-09-24
Novosad, Stephen J.
Boring or penetrating the earth
Boring without earth removal
175 22, 175 62, E21B 1102
Patent
active
045427968
ABSTRACT:
The invention concerns itself with a process and a device for drilling the soil, more particularly but not exclusively, for the purpose of laying pipelines.
A guide block (26) that slides on means that form a slide bar (27, 28) parallel with the direction of drilling (43) in relation to a skelton (29) under the action of pressing means (37, 38) acting between the skeleton (29) and the guide block (46) internally delimits a housing (46) at least partly closed towards the rear and laterally and open towards the front in reference to the direction of drilling (43) for receiving means that form a tube (20) having a rectilinear axis (44) and an end zone (19) projecting towards the front and supporting a detachable tool (6) consisting of a boring bit (6) having externally, successively from the front to the rear, a flat cutting edge (52) across the axis (44) of the tube (20), a frustoconical cutting edge (16) converging towards the front with reference to the direction of drilling (43) and a cylindrical cutting edge (17) that joins said frustoconical cutting edge.
It is applied to the mechanical industry and to public works.
REFERENCES:
patent: 1179491 (1916-04-01), Ammon
patent: 3113628 (1963-12-01), Orcutt
patent: 3845828 (1974-11-01), Taylor
patent: 4024721 (1977-05-01), Takada
Electricite de France
Goodwin Michael A.
Novosad Stephen J.
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