Spacer ring for elastomeric seal

United States of America Patent

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Mar 1, 2011
Grant Date
Apr 15, 2010
app pub date
Oct 14, 2008
filing date
Oct 14, 2008

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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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Patent Owner(s)

BAKER HUGHES INCORPORATED

International Classification(s)

E21B:EARTH OR ROCK DRILLING

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Lin, Chih	Spring, US	37	839

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Spacer ring for elastomeric seal

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United States of America Patent

12251000

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PATENT NO	7896109
APP PUB NO	20100089657A1
SERIAL NO	12251000
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
March 01, 2011	US,7896109,B2 US7896109B2	GRANTED PATENT AS SECOND PUBLICATION
April 15, 2010	US,20100089657,A1 US20100089657A1	FIRST PUBLISHED PATENT APPLICATION

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