Drill bit nozzle assembly and insert assembly including a...

Details Drill bit nozzle assembly and insert assembly including a... Drill bit nozzle assembly and insert assembly including a...

2011-06-07

2011-06-07

Stephenson, Daniel P (Department: 3676)

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

C175S393000, C175S429000, C175S424000

Reexamination Certificate

active

07954568

ABSTRACT:
A steel body bit nozzle assembly comprising a bit body having a port therein with a sleeve disposed adjacent a nozzle in the port and an annular seal disposed between an outer wall, each of the sleeve and the nozzle and a wall of the port, each seal being received and compressed in an annular seal groove located between its respective component and the bit body. A nozzle pocket insert assembly and a method of manufacturing or retrofitting a steel body bit for use of the nozzle pocket insert assembly are also disclosed.

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PCT International Search Report for counterpart PCT International Application No. PCT/US2007/023902, mailed Apr. 11, 2008.

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