| 摘要 |
The present invention is a non-explosive separation nut for fastening and releasing a threaded bolt under remote control signals. A preferred embodiment of the separation nut includes a housing, a segmented nut, a locking sleeve, a rocker and two non-explosive actuator (NEA) assemblies. The segmented nut can split radially into three or more segments and has an exterior surface with raised ridges and alternate recessed grooves. The locking sleeve is biased by a spring and placed over the segmented nut. It has an interior surface with retaining pins which are engageable with the exterior surface of the segmented nut. The locking sleeve is engaged with the two NEA assemblies through a tiltable rocker. When neither NEA assemblies is actuated, the retaining pins of the locking sleeve are engaged with the ridges of the segmented nut, so that the segments of the segmented nut are compressed radially inwardly for fastening the threaded bolt. When both or either one of the two NEA assembly is actuated, the locking sleeve will move by the biasing spring, such that the retaining pins of the locking sleeve will be engaged with the grooves of the segmented nut, so that the segments of the segmented nut can move radially outwardly for releasing the threaded bolt. The separation nut further includes two reset screws for re-positioning and re-balancing the rocker after both or either one of the two NEA assemblies are actuated, so that both or either one of the two NEA assemblies can be removed, refurbished and reassembled, and the separation nut can be reset to the fastened condition.
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