Replaceable bit nozzle

E - Fixed Constructions – 21 – B

Patent

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Details

255/73

E21B 10/60 (2006.01) E21B 10/62 (2006.01)

Patent

CA 1234562

ABSTRACT OF THE DISCLOSURE A drilling fluid nozzle for an earth boring bit is formed entirely of tungsten carbide, having hard-ground threads on its exterior for securing in the bit passage. The nozzle has an upwardly facing shoulder located below the threads which sealingly engages a downwardly facing shoulder formed in the bit passage. An O-ring seal is located above the threads.

481351

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