Material or article handling – Cylindrical bar handling device – Sequentially acting – diverse handling devices
Patent
1980-07-28
1983-10-04
Blix, Trygve M.
Material or article handling
Cylindrical bar handling device
Sequentially acting, diverse handling devices
414 22, 175 52, 175 85, 212222, E21B 1914
Patent
active
044076290
ABSTRACT:
An improved boom for a drill rig is described which includes two rotatably mounted clamps which are rotatable between a side loading position, to facilitate loading and unloading in the horizontal position, and a central position, in which a clamped tubular is aligned with the drilling axis when the boom is in the vertical position. An automatic hydraulic sequencing circuit is provided to automatically rotate the clamps into the side loading position whenever the boom is pivoted with a down-hole tubular positioned in the clamp. In this position, the clamped tubular is aligned with a safety plate mounted on the boom to prevent a clamped tubular from slipping from the clamps. A safety frame is formed between the tower of the drill rig and the vertical boom by a slidable bolt mounted on the tower and an annular receiving member mounted on the boom to receive the end of the bolt. This boom also includes an improved pivoting linkage which facilitates the transport of the rig.
REFERENCES:
patent: Re26284 (1960-07-01), O'Neill et al.
patent: 156238 (1874-10-01), Squyer
patent: 3158213 (1960-08-01), O'Neill et al.
patent: 3734208 (1973-05-01), Otto
patent: 3778940 (1973-12-01), Blecken
patent: 3977480 (1976-08-01), Hilding
patent: 4102094 (1978-07-01), MacKinnon
patent: 4109800 (1978-08-01), Howard et al.
Avila Stephen P.
Blix Trygve M.
Walker-Neer Manufacturing Co. Inc.
LandOfFree
Lifting apparatus for down-hole tubulars does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lifting apparatus for down-hole tubulars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lifting apparatus for down-hole tubulars will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-971677