Rod changing system

Details Rod changing system Rod changing system

1995-05-12

1996-11-19

Tsay, Frank

Boring or penetrating the earth

With orienting or racking means for unconnected tools or...

175162, 414 2271, E21B 1915

Patent

active

055753442

ABSTRACT:
A drill rod changing apparatus is disclosed including a support assembly connected to a drilling rig for supporting a plurality of drill rods. Connected to the support assembly is a lifting mechanism for raising and lowering a drill rod along the longitudinal axis of a drill string. Movement of the drill rod along the longitudinal axis of the drill string is assisted by a gripping assembly which engages a drill rod integrated with the lifting mechanism. The gripping assembly further assists in threading or unthreading adjacent coupling connections to the drill rod by preventing rotation of the drill rod while an adjacent connection is unthreaded. The apparatus further enables rotation of a gripped drill rod from a first position at the drill string to a second storage position.

REFERENCES:
patent: 3920087 (1975-11-01), Hisey et al.
patent: 4128135 (1978-12-01), Mitchhart et al.
patent: 4403666 (1983-09-01), Willis
patent: 4595066 (1986-06-01), Nelmark et al.
patent: 4738321 (1988-04-01), Olivier
patent: 4765401 (1988-08-01), Boyadjieff
patent: 5297642 (1994-03-01), Rajakallio et al.
patent: 5375667 (1994-12-01), Trevisani
patent: 5437527 (1995-08-01), McGill et al.

Affiliated with

Also associated with

Rating

Rod changing system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rod changing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rod changing system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-534375