Hydrostatic bearing

Details Hydrostatic bearing Hydrostatic bearing

2008-09-26

2009-11-24

Gay, Jennifer H (Department: 3676)

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

C175S331000, C175S359000, C175S367000, C175S369000, C384S092000, C384S093000

Reexamination Certificate

active

07621346

ABSTRACT:
A roller cone bit having a sealed lubricant reservoir between a roller cone and a head section. A journal sleeve is included on the head section that circumscribes the journal bearing surface of the head section. The sleeve can axially pivot on the head section, but does not rotate thereon. The reservoir is formed into a journal bearing surface of the head section body and may be sealed by placing a seal around its periphery that extends between the journal bearing surface and journal sleeve. Sealing the reservoir results in a hydrostatic condition therein and substantially equalized pressures.

REFERENCES:
patent: 3746405 (1973-07-01), Welton
patent: 4220377 (1980-09-01), Phelps
patent: 4235295 (1980-11-01), Zyglewyz
patent: 4252383 (1981-02-01), Simpson
patent: 4560014 (1985-12-01), Geczy
patent: 5054938 (1991-10-01), Ide
patent: 5586611 (1996-12-01), Dorosz
patent: 5593231 (1997-01-01), Ippolito
patent: 6053264 (2000-04-01), Frankel et al.
patent: 6460635 (2002-10-01), Kalsi et al.
patent: 7387177 (2008-06-01), Zahradnik et al.
patent: 2007/0081747 (2007-04-01), Dick et al.

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