METHODS OF ATTACHING A SHANK TO A BODY OF AN EARTH BORING TOOL INCLUDING A LOAD BEARING JOINT AND TOOLS FORMED BY SUCH METHODS
摘要
Earth-boring rotary drill bits including a bit body attached to a shank assembly at a joint. In some embodiments, the joint may be configured to carry at least a portion of any tensile longitudinal and rotational load applied to the drill bit by mechanical interference at the joint. In additional embodiments, the joint may be configured to carry a selected portion of any tensile longitudinal load applied to the drill bit. Methods for attaching a shank assembly to a bit body of an earth-boring rotary drill bit include configuring a joint to carry at least a portion of any tensile longitudinal and rotational load applied to the drill bit by mechanical interference. Additional embodiments include configuring a joint to carry a selected portion of any tensile longitudinal load applied to the drill bit by mechanical interference.
申请公布号
WO2009149158(A3)
申请公布日期
2010.03.11
申请号
WO2009US46092
申请日期
2009.06.03
申请人
BAKER HUGHES INCORPORATED;SMITH, REDD, H.;DUGGAN, JAMES