Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Danny E. Scott0
Chih C. Lin0
Aaron J. Dick0
Date of Patent
June 26, 2007
Patent Application Number
10223533
Date Filed
August 19, 2002
Patent Citations Received
...
Patent Primary Examiner
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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