Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 22, 2008
Patent Application Number
11202878
Date Filed
August 12, 2005
Patent Primary Examiner
Patent abstract
A roller cone drill bit may include optimally designed bearing structures and cutting structures. The roller cone drill bit may include three cone assemblies rotatably mounted on respective spindles via respective bearing structures. Each cone assembly may have a respective cutting structure with a minimal moment center located along each respective axis of rotation. Each respective bearing structure has a center point located proximate each respective minimal moment center.
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