Spacer ring for elastomeric seal

Details Spacer ring for elastomeric seal Spacer ring for elastomeric seal

2011-03-01

2011-03-01

Stephenson, Daniel P (Department: 3676)

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

Reexamination Certificate

active

07896109

ABSTRACT:
A roller cone bit is provided that includes a companion ring positioned adjacent to the seal, wherein the companion ring is formed of a porous material that is compatible with the fluid lubricating the interface between the roller cone and the bearing pin.

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