Portable earth boring machine with steering head

Details Portable earth boring machine with steering head Portable earth boring machine with steering head

1974-05-20

1977-03-22

Purser, Ernest R.

Boring or penetrating the earth

Means traveling with tool to constrain tool to bore along...

175 61, E21B 706

Patent

active

040131343

ABSTRACT:
A portable earth boring machine for the horizontal boring of shafts and the insertion of pipeline casing sections in installations where excavation from the surface is undesirable. The machine is characterized by a steering head positioned at the front of the casings and remotely controlled by the machine operator so as to directionally control the direction of extension of the pipeline as the drilling operation progresses.

REFERENCES:
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patent: 3326008 (1967-06-01), Baran et al.
patent: 3415329 (1968-12-01), Mirhord
patent: 3465834 (1969-09-01), Southworth
patent: 3526285 (1970-09-01), Adkins et al.
patent: 3587756 (1971-06-01), Adkins et al.
patent: 3637032 (1972-01-01), Jeter
patent: 3712391 (1973-01-01), Coyne
patent: 3743034 (1973-07-01), Bradley
patent: 3767836 (1973-10-01), Geis et al.
patent: 3817336 (1974-06-01), Sears

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