Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
November 27, 2018
Patent Application Number
15100204
Date Filed
November 27, 2014
Patent Citations Received
Patent Primary Examiner
Patent abstract
An under-reaming tool comprises a body and a plurality of extendable cutters mounted on the body. The under-reaming tool is configured to be cycled between a first configuration in which the cutters are retracted and a second configuration in which the cutters are movable between retracted and extended positions. The under-reaming tool is configured to prevent extension of the cutters by an external fluid in the first and/or second configuration/s.
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