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US Patent 7234541 DLC coating for earth-boring bit seal ring

Patent 7234541 was granted and assigned to Baker Hughes on June, 2007 by the United States Patent and Trademark Office.

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US Patent 12006973 Diamond surface bearings for sliding engagement with metal surfaces
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US Patent 11994006 Downhole drilling tool with a polycrystalline diamond bearing
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US Patent 11970339 Roller ball assembly with superhard elements
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US Patent 11933356 Continuous diamond surface bearings for sliding engagement with metal surfaces
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US Patent 11906001 Joints with diamond bearing surfaces
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US Patent 11761486 Polycrystalline diamond bearings for rotating machinery with compliance
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US Patent 11761481 Polycrystalline diamond radial bearing
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Patent Inventor Names
Aaron J. Dick0
Chih C. Lin0
Danny E. Scott0
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US Patent 11746875 Cam follower with polycrystalline diamond engagement element
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Patent abstract

An earth-boring bit has a seal assembly with a seal face having a DLC coating. The seal assembly locates between a bearing pin and a cone of the bit. The seal assembly has at least one rigid ring that rotates against a mating surface. The DLC coating is diamond-like carbon that may be coated by different processes onto either the ring, the mating surface, or both.

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US Patent 11692449 Carbon seal assembly
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US Patent 11655850 Continuous diamond surface bearings for sliding engagement with metal surfaces
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US Patent 11655679 Downhole drilling tool with a polycrystalline diamond bearing
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Official Website
https://pdfpiw.uspto.gov/.piw?Docid=07234541
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US Patent 07234541 DLC coating for earth-boring bit seal ring US Patent 7234541 DLC coating for earth-boring bit seal ring

Infobox
Patent Number
07234541
Patent Number
7234541
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Website URL
https://pdfpiw.uspto.gov/.piw?Docid=07234541
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 US Patent 07234541 DLC coating for earth-boring bit seal ring

Infobox
Is a
Patent
Patent
Current assignee
Baker Hughes
Baker Hughes
Patent jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent number
07234541
Date of patent
June 26, 2007
Patent application number
10223533
Date Filed
August 19, 2002
Patent primary examiner
‌
Jennifer H Gay

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