Nozzle retaining ring with crushed o-ring

Details Nozzle retaining ring with crushed o-ring Nozzle retaining ring with crushed o-ring

E - Fixed Constructions

21

B

255/73

E21B 10/18 (2006.01) E21B 10/60 (2006.01) E21B 10/62 (2006.01)

Patent

CA 1157011

ABSTRACT OF THE DISCLOSURE An earth boring bit has a nozzle assembly with a wedging retaining ring and a crushed O-ring seal. The nozzle is located in a passage in the drill bit and bears against a shoulder. The retaining ring is secured by threads into the passage to tighten the nozzle against the shoulder. The retaining ring has a bore with an upper rim that encircles a conical section in the bore. The retaining ring conical section mates with a conical section formed on the exterior of the nozzle. The two conical sections wedge the nozzle in place when the retaining ring is tightened. An O-ring is located between the nozzle conical section, the wall of the passage and the upper rim of the retaining ring.

397726

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