Positive retraction latch locking dog for a rotating control device

摘要

A latch (116) and method for use is provided for latching an item of oilfield equipment (104). The latch has a housing (114) containing a latch member (116), 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 (118) is configured to drive the latch member toward the radially retracted position.