发明名称 Positive retraction latch locking dog for a rotating control device
摘要 A latch and method for use is provided for latching an item of oilfield equipment. The latch has a housing containing a latch member, and the latch member is movable between a radially engaged position in which it is engaged with the item of oilfield equipment, and a radially retracted position in which it is disengaged from the item of oilfield equipment. An actuator is configured to drive the latch member into the radially engaged position. Further, the actuator is configured to drive the latch member toward the radially retracted position.
申请公布号 US9518436(B2) 申请公布日期 2016.12.13
申请号 US201514691202 申请日期 2015.04.20
申请人 Weatherford Technology Holdings, LLC 发明人 Rios, III Aristeo;Chambers James W.;Bailey Thomas F.;Wagoner Danny W.;Harrall Simon J.
分类号 E21B23/01;E21B33/03;E21B33/038;E21B33/08 主分类号 E21B23/01
代理机构 Smith IP Services, P.C. 代理人 Smith IP Services, P.C.
主权项 1. An apparatus for latching an item of oilfield equipment comprising: a housing; a latch member contained within the housing, the latch member movable between a radially engaged position in which the latch member is engaged with the item of oilfield equipment, and a radially retracted position in which the latch member is disengaged from the item of oilfield equipment; an actuator configured to drive the latch member into the radially engaged position, wherein the actuator is configured to drive the latch member toward the radially retracted position; wherein the actuator comprises a radial rod attached at one end to the latch member, and a spring mounted on the radial rod; wherein the latch member is driven into the radially engaged position by impact at a first contiguous interface between the actuator and the latch member; and wherein the latch member is driven into the radially retracted position by the spring biasing the radial rod and the latch member away from the housing.
地址 Houston TX US