B - Operations – Transporting – 25 – B
Patent
B - Operations, Transporting
25
B
B25B 13/50 (2006.01) E21B 19/16 (2006.01)
Patent
CA 2268058
The present invention provides an improved power tong (1) having a body (2) with a rotating assembly (6). The power tong (1) further has a plurality of jaw members (20, 21, 35) positioned within the rotating assembly (6) with two of the jaw members being pivoting jaws (20, 21) adapted to interlock when in a closed position. In an alternate embodiment, the improved power tong (1) will have a compensating jaw assembly (35, 37) to limit the axial load placed on the tubular member (13) being gripped.
La présente invention concerne une clé de vissage hydropneumatique (1) améliorée comportant un corps (2) avec un ensemble rotatif (6). La clé de vissage hydropneumatique (1) comporte une pluralité d'éléments de mâchoire (20, 21, 35) situés dans l'ensemble rotatif (6), deux de ces éléments de mâchoire étant des mâchoires pivotantes (20, 21) conçues de façon à se verrouiller lorsqu'elles sont en position fermée. Selon une autre réalisation, une clé de vissage hydropneumatique (1) peut comporter un ensemble de mâchoires compensatrices de façon à limiter la charge axiale appliquée sur l'élément tubulaire qui se trouve serré.
Borden Ladner Gervais Llp
Buck David A.
Mccoy Corporation
LandOfFree
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