Tubular handling device
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United States of America Patent
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-
May 13, 2014
Grant Date -
Oct 27, 2011
app pub date -
Jun 26, 2009
filing date -
Jun 26, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tubular member handling apparatus is a gripping tool (100) in the form of a body (110) having a longitudinal axis (202) and formed by a plurality of sleeves (750) connected end to end, each sleeve including a frusto-conical bore 752 centered on said longitudinal axis; a clamp member (700) in each sleeve formed by clamp-segments (740), each having side faces (168), end faces (743), a frusto-conical exterior surface (741) adapted to match said frusto-conical bore, and a cylindrical interior surface (745); cage-segments (220) connected to said interior surface and having a plurality of windows (222) partially closing recesses (214) in said interior surface, which recesses are elongate in said longitudinal direction, house a roller (230) and have a base (236) inclined in said longitudinal direction so that, at a lower end (232) of each recess the roller protrudes through said window and at an upper end (234) thereof the roller protrudes less or not at all; a bias mechanism 780, urging said clamp-segments apart from each other in a peripheral direction; connection means (160) between adjacent clamp segments so that they move together when one is moved axially.
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