Apparatus for directing forward movement of a rod

Details Apparatus for directing forward movement of a rod Apparatus for directing forward movement of a rod

1989-10-02

1990-06-26

Arola, Dave W.

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Repair, replacement, or improvement

175 23, F16L 102, E21B 726, E21B 1102

Patent

active

049367080

ABSTRACT:
An apparatus for directing the forward movement of a rod as it is moved through a loose medium has the versatility either to direct or not direct such movement. The apparatus has a directing member that is disabled in a first position wherein movement of the rod is not directed and is enabled in a second position wherein movement of the rod is directed. The apparatus includes drive-engaging members and a control mechanism for controlling the disengagement and engagement of the drive-engaging members selectively to permit forward movement of the rod in a desired direction. The apparatus may also include fluid passageways and valves for dispensing fluid such as water or drilling mud into the loose medium in the direction of movement to facilitate the movement.

REFERENCES:
patent: 955729 (1910-04-01), Welsh
patent: 2283650 (1942-05-01), Sanborn
patent: 4787463 (1988-11-01), Geller et al.

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