E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
255/63
E21B 10/00 (2006.01) E21B 10/56 (2006.01) E21B 10/60 (2006.01)
Patent
CA 1264317
PRECIS DE LA DIVULGATION On améliore les performances d'un trépan de forage, en répartissant les éléments de coupe par petits groupes fixés chacun sur des îlots séparés répartis sur toute la surface de l'outil. Dans ce type d'outil, on garnit avantageusement chaque orifice de rinçage d'un ajutage d'injection.
494961
Diamant Boart
Lambot Honore J.
Robic Robic & Associes/associates
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