Protector for rock bit seals

Details Protector for rock bit seals Protector for rock bit seals

2006-09-21

2009-12-08

Thompson, Kenneth (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

C277S355000

Reexamination Certificate

active

07628231

ABSTRACT:
An earth-boring bit has a bit body with a depending bearing pin and a cone rotatably mounted thereon. A seal seals between the bearing pin and the cone. An annular set of bristles is located adjacent at least part of the dynamic seal surface of the seal to protect the seal against debris.

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Perkin Elmer, Inc., Fluid Sciences, Brush Seals, copyright 1998-2004, one sheet.

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