Carottier double

E - Fixed Constructions – 21 – B

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255/70

E21B 10/02 (2006.01) E21B 10/48 (2006.01) E21B 25/00 (2006.01)

Patent

CA 1123420

PRECIS DE LA DIVULGATION: Carottier double, ayant une pivoterie vissée dans un tube intérieur, présente son extrémité supérieure capable de coopérer avec une coiffe amovible. La coiffe sert à bloquer contre toute rotation relative d'une part, la pivoterie et le tube intérieur et d'autre part, un tube extérieur. La coiffe est montée après réglage de l'écartement des extrémités infé- rieures d'une couronne de sondage d'un cône extracteur.

348050

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