Flush mounted spider

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 19/10 (2006.01) E21B 19/24 (2006.01)

Patent

CA 2463147

A gripping apparatus (100) for supporting a tubular includes a longitudinal opening extending therethrough. A bowl (25) is formed on an inner wall of the housing to provide an incline surface for one or more gripping members (20). As the gripping members are move down along the incline, the incline causes the gripping members to move radially toward the tubular and contact the tubular. In one embodiment, the housing comprises two body portions (11, 12) coupled together using one or mores hinges (35). In one aspect, the bowl is formed as a recess in the inner wall (42) of the housing. The hinges of the housing are progressively curved to accommodate the recess bowl, thereby increasing the tubular size handling capacity of the gripping apparatus.

Dispositif de préhension (100) servant à supporter une canalisation et comprenant une ouverture le traversant dans le sens de la longueur. Une cloche (25) est située sur une paroi intérieure du carter afin de constituer une surface inclinée pour un ou plusieurs des éléments de préhension (20). Simultanément à leur descente le long de la surface inclinée, les éléments de préhension se déplacent dans un sens radial sous l'effet de l'inclinaison en direction de la canalisation et viennent en contact avec celle-ci. Dans un mode de réalisation, le carter comprend deux parties (11, 12) accouplées au moyen d'une ou de plusieurs articulations (35). Dans un aspect, la cloche consiste en un évidement pratiqué dans la paroi intérieure (42) du carter. Les articulations du carter sont incurvées progressivement afin de s'adapter à la cloche, ce qui permet d'augmenter la capacité de manipulation de ce dispositif de préhension en ce qui concerne la dimension des canalisations.

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