Directional rod pusher

Details Directional rod pusher Directional rod pusher

1989-04-06

1990-08-07

Neuder, William P.

Boring or penetrating the earth

Boring without earth removal

175 61, E21B 406, E21B 706, E21B 726, E21B 4400

Patent

active

049459996

ABSTRACT:
The present invention comprises a rod pusher device which moves a drill string having a directional boring bit at its leading end. The invention includes a conversion device, such as a RIGID link, mounted between a fixed point on the hydraulic thrust cylinder or frame assembly and the moveable drill string to automatically and simultaneously convert the axial movement of the thrust cylinder and drill string into a combined axial and rotational movement of the drill string. The link is removable so that the push rod operator can readily select between axial movement of the drill string or combined axial and rotational movement, and thereby control the path of the borehole.

REFERENCES:
patent: 4271711 (1981-06-01), Vavra
patent: 4304142 (1981-12-01), Blomstrom
patent: 4834193 (1989-05-01), Leitko, Jr. et al.

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