| 摘要 |
There is disclosed an easily releasable fastener which is specifically designed for high torque applications. The fastener comprises a slotted nut having at least two axial slots, and preferably no more than one of the slots extends completely through the body of the fastener. The slots divide the fastener into at least two segments which, in the preferred embodiment are retained together by the residual portions of the incomplete slots. Each of the segments has a flat surface for torque transmission and the assembly of segments is surrounded by a thin retainer band seated in an annular groove about the body of the fastener. The fastener is mounted within a retaining ring which has internal flats that coact with the flatted surfaces of the individual segments. The retaining ring has external wrenching flats to permit the application of the fastener to a standard bolt. The fastener is released by an extractor which has a cylindrical shroud to surround the retainer ring, with an annular lip at one end and a drive bolt at its opposite end. The annular lip of the shroud is placed beneath the annular edge of the retaining sleeve and the drive bolt is advanced against the upper surface of the segmented nut, thereby forcefully extracting the ring from the segmented nut and releasing the hoop tension about the nut, whereby the nut segments are spread outwardly, releasing the bolt tension.
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