Directional control mechanism for underground driven pipes and c

Details Directional control mechanism for underground driven pipes and c Directional control mechanism for underground driven pipes and c

1974-03-27

1977-08-16

Purser, Ernest R.

Boring or penetrating the earth

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

175 45, 175 61, E21B 704

Patent

active

040420469

ABSTRACT:
A mechanism carried at the forward end of a tubular pipe which is adapted to be driven underground over a considerable distance while maintained at a particular grade level. In the preferred embodiment the control mechanism comprises a cylindrically shaped steering head pivotally mounted to the forward end of the pipe and including means attachable to the steering head for rotating the same a predetermined amount with respect to the direction of movement of the pipe so as to initiate a movement of the pipe in either vertical or horizontal directions. In another version of the present invention a second cylindrically shaped steering head is mounted at the forward end of the first steering head with the second steering head being movable about an axis which is perpendicular to the axis of rotation of the first head whereby the direction of movement of the pipe may be selectively controlled in perpendicular planes.

REFERENCES:
patent: 3326008 (1967-06-01), Baran et al.
patent: 3415329 (1968-12-01), Marlind
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: 3794128 (1974-02-01), Gagen et al.
patent: 3811519 (1974-05-01), Driver

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