Directional rod pusher

Details Directional rod pusher Directional rod pusher

1990-07-31

1991-12-10

Neuder, William P.

Boring or penetrating the earth

Boring without earth removal

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

Patent

active

050709488

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 to automatically and simultaneously convert the axial movement of the drill string into a combined axial and rotational movement of the drill string. The conversion device is selectively engageable 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: 3529682 (1970-09-01), Coyne et al.
patent: 3589454 (1971-06-01), Coyne
patent: 4271711 (1981-06-01), Vavra
patent: 4304142 (1981-12-01), Blomstrom
patent: 4306626 (1981-12-01), Duke et al.
patent: 4621698 (1986-11-01), Pittard et al.
patent: 4632191 (1986-12-01), McDonald et al.
patent: 4694913 (1987-09-01), McDonald et al.
patent: 4834193 (1989-05-01), Leitko, Jr. et al.
patent: 4938297 (1990-07-01), Schmidt
patent: 4945999 (1990-08-01), Malzahn
The publication entitled "P40 and P80 Rod Pushers," dated Mar. 1990, by the Charles Machine Works.
The publication entitled "True Trac Extended-Range Guided Boring System" dated Mar. 1990, by the Charles Machine Works.
The publication entitled "The Hole Boring Story" dated Oct. 1989, by the Charles Machine Works.

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