US Patent 7121365 Rock bit with grease composition utilizing polarized graphite
Patent 7121365 was granted and assigned to Smith International on October, 2006 by the United States Patent and Trademark Office.
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Patent abstract
A lubricating grease is specific for a rock bit for drilling subterranean formations. The rock bit body includes a plurality of journal pins, each having a bearing surface, with a cutter cone mounted on each journal pin and also including a bearing surface. A grease reservoir provides lubricating grease to such bearing surfaces. The grease composition adjacent the bearing surfaces comprises a lubricating base oil, sufficient thickener and additives in the base oil to form a rock bit grease, and an effective amount of polarized graphite.
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US Patent 07121365 Rock bit with grease composition utilizing polarized graphite US Patent 7121365 Rock bit with grease composition utilizing polarized graphite
Infobox
Patent Number
0712136500
Patent Number
712136500
Edits on 22 Apr, 2023
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
071213650
Date of Patent
October 17, 2006
0Patent Application Number
107441120
Date Filed
December 23, 2003
0Official Website
Patent Primary Examiner
Edits on 27 Sep, 2022
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
071213650
Date of Patent
October 17, 2006
0Patent Application Number
107441120
Date Filed
December 23, 2003
0Official Website
Patent Primary Examiner
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US Patent 07121365 Rock bit with grease composition utilizing polarized graphite
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07121365
Date of patent
October 17, 2006
Patent application number
10744112
Date Filed
December 23, 2003
Patent primary examiner
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