E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/10 (2006.01) B25B 1/24 (2006.01) E21B 19/07 (2006.01) F16L 3/10 (2006.01)
Patent
CA 2143314
An insert (1) for use in slips comprises a resilient base member (2) in which are vulcanized a plurality of strips (3) each having pipe gripping teeth (4).
Une pièce rapportée (1) destinée à être utilisée dans des coins de retenue comprend un élément de base élastique (2) dans lequel on a vulcanisé un ensemble de bandes (3) comportant chacune des dents (4) qui saisissent la tige.
Mcfadden Fincham
Weatherford/lamb Inc.
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