Arrangement in a gripper mechanism for a free pipe/rodlike...

Handling: hand and hoist-line implements – Grapple – Well type

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C294S102200

Reexamination Certificate

active

10506128

ABSTRACT:
A gripper mechanism (22) suspended in a coiled tubing/wireline in a well serves to releasably hold a downhole tool or other piece of equipment positioned downstream, via a tubular connecting element (10). The gripper mechanism (12) comprises axially, two relative to each other, movable coaxial parts (18, 16), a gripping part (18) designed to grip said connecting element (10) and an actuating part (16) designed to exert a radial clamping effect on the gripping portion (18a) of the gripping part (18) when this is in engagement with said connecting element (10). The clamping effect is due to complimentary conical face on opposite sides of the two parts (16, 18) of the gripper mechanism (12) being forced against each other by the axial displacement of one part (16) relative to the other part (18) in one direction (the upstream/pull-up direction). In order to enable a small cone/coning angle to be used at these complimentary conical faces, while at the same time ensuring that the conical faces do not get wedged to each other across a longitudinal course in the axial direction, the conical faces of each part (18and16) have been divided, so that each conical face comprises annular conical part faces (32, 28) and intermediate annular cylindrical part faces (34, 30). The conical part faces (32, 28) have a mutually equal amount of taper and the same axial extent. The intermediate cylindrical part faces (34, 30) have a mutually equal axial extent.

REFERENCES:
patent: 2128430 (1938-08-01), Pryor
patent: 2553985 (1951-05-01), Siracusa
patent: 4124245 (1978-11-01), Kuenzel
patent: 5054833 (1991-10-01), Bishop et al.
patent: 2 184 760 (1987-07-01), None
patent: 2 185 279 (1987-07-01), None
patent: 2000 1721 (2001-10-01), None
NO Search Report dated Oct. 4, 2000 from NO Application No. 2000 1721.
PCT International Preliminary Examination Report dated Dec. 15, 2003 based on PCT/NO01/00392.
PCT International Search Report dated Apr. 30, 2002 based on PCT/NO01/00392.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Arrangement in a gripper mechanism for a free pipe/rodlike... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Arrangement in a gripper mechanism for a free pipe/rodlike..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement in a gripper mechanism for a free pipe/rodlike... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3886361

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.