Patent ID: 11920470
Assignee: RODDIE, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 14:
15. The method of claim 14 further comprising the steps of retrieving said drill stems from said bore hole by
(l) providing said carriage component at said second limiting position, said hydraulic rotating drive coupled to a first drill stem end at said aperture via a first said drill stem joint, said first rotation limiting element disengaged from said first drill stem;
(m) providing hydraulic power to said hydraulic motor to move said carriage component and said operator back along said chassis until a said second drill stem joint and associated second drill stem is retrieved from said bore hole and at said aperture;
(n) positioning said first rotation inhibiting element on said second drill stem joint at said aperture and a second rotation inhibiting element on said first drill stem joint at said hydraulic rotating drive and rotating said drill stem in an uncoupling rotation to disengage said second drill stem;
(o) retracting said second rotation inhibiting element from said first drill stem joint, disengaging said second rotation inhibiting element from said first stem joint, and continuing uncoupling rotation to disengage said drill stem from said rotating drive means, and
(p) repeating steps (l)-(o) until all drill stems are retrieved from said bore hole.