US Patent 8991523 Rolling cutter assembled directly to the bit pockets
Patent 8991523 was granted and assigned to Smith International on March, 2015 by the United States Patent and Trademark Office.
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A drill bit includes a bit body, a plurality of blades extending radially from the bit body, a plurality of cutter pockets disposed on the plurality of blades, at least one rolling cutter disposed in one of the cutter pockets, wherein each rolling cutter has a substrate, a cutting face, a cutting edge, and a side surface, and at least one blocker positioned adjacent to each of the at least one rolling cutters on a leading face of the blade, wherein each blocker has a retention end and an attachment end. The retention end of each blocker is positioned adjacent to a portion of the cutting face of each rolling cutter to retain the rolling cutter in the cutter pocket and the attachment end is attached to a portion of the blade.
US Patent 08991523 Rolling cutter assembled directly to the bit pockets US Patent 8991523 Rolling cutter assembled directly to the bit pockets
US Patent 08991523 Rolling cutter assembled directly to the bit pockets
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