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Drill bit cone protector
   
Document Number
US Patent 7004267
Issued Date
February 28, 2006
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Abstract
A drill bit for use in earth-boring operations includes a threaded upper section removably connectable to a power source, and a shank section connected thereto and having a centrally disposed longitudinal axis. The shank section further has a lower portion extending substantially vertically and parallel to the axis and a plurality of notches spaced along a perimeter thereof. The present invention further includes a plurality of carbide buttons affixed to the plurality of notches respectively for cooperating with a plurality of cones during operating conditions to thereby prevent the plurality of cones from dislodging from the lower section and for assisting an operator to bore a substantially uniform hole in a predetermined direction and about the longitudinal axis.
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Number of Claims:
12
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Owner
Published
February 28, 2006
Application Number
10/822,262
Filed
April 12, 2004
US Classification
175/331   175/374
Int'l Classification
E21B   10/00   (20060101)  
Examiner
USPTO Field of Search
175/331   175/374  
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