Shaped inserts with increased retention force

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 10/08 (2006.01) C23C 14/14 (2006.01) E21B 10/16 (2006.01) E21B 10/50 (2006.01)

Patent

CA 2616245

A shaped insert that includes a top portion, and a grip length, wherein the grip length is modified to have a non-uniform cross sectional area is disclosed. In another case, a shaped insert includes a top portion, and a grip length, wherein the grip length is modified such that the insert is non-cylindrical. In another case, a shaped insert includes a top portion, and a grip length, wherein the grip length is coated in a non-uniform manner.

La présente divulgation porte sur une pièce rapportée façonnée qui comprend une partie supérieure et une certaine longueur de préhension, dont la longueur est modifiée pour obtenir une surface sectionnelle non uniforme. Dans un autre cas, une pièce rapportée façonnée comprend une parie supérieure et une certaine longueur de préhension, dont la longueur est modifiée de sorte que la pièce rapportée est non cylindrique. Dans un autre cas, une pièce rapportée façonnée comprend une partie supérieure et une certaine longueur de préhension, dont la longueur est revêtue de manière non uniforme.

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