Slip gripping mechanism

Details Slip gripping mechanism Slip gripping mechanism

1986-06-20

1987-12-08

Reger, Duane A.

Brakes

Rod

166212, 166217, 175423, B65H 5910, E21B 2304, E21B 718

Patent

active

047113260

ABSTRACT:
A slip gripping mechanism is shown for supporting a string of cylindrical conduit within the interior bore of a circumscribing conduit. An elongate body has a plurality of spaced longitudinal slots at one end. Vertically shiftable slips are carried in the slots by side edges which engage mating profiles formed in the slots. The slots form guideways for the slips for shifting the slips upwardly and outwardly relative to the body between a set position engaging the circumscribing conduit and an unset position. Each slip has an arcuate lower surface and a selected width to thickness ratio to allow controlled flexing of the slip in the direction of the circumscribing conduit as the slip moves to the set position.

REFERENCES:
patent: 2877850 (1959-03-01), Burns
patent: 2879851 (1959-03-01), Wilson
patent: 3013610 (1961-12-01), Conrad
patent: 3528500 (1970-09-01), Brown
patent: 4311196 (1982-01-01), Beall et al.
patent: 4437517 (1984-03-01), Bianchi et al.
patent: 4440223 (1984-04-01), Akkerman
patent: 4497368 (1985-02-01), Baugh

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