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Nozzle bore for high flow rates
   
Document Number
US Patent 7040423
Issued Date
May 9, 2006
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Abstract
The present invention relates to a roller cone drill bit that has improved flow characteristics. The roller cone drill bit includes forming at least one relief region inside a bit body of the roller cone drill bit on a ledge formed between a fluid plenum and at least one of the fluid orifices. A method of locating the at least one relief region is also disclosed.
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Number of Claims:
58
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Published
May 9, 2006
Application Number
10/788,258
Filed
February 26, 2004
US Classification
175/339   175/340 175/424
Int'l Classification
E21B   10/18   (20060101)  
Examiner
Attorney/Law Firm
USPTO Field of Search
175/339   175/340   175/424   175/393  
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