| 摘要 |
A telescoping, shock absorbing strut capable of supporting extremely large loads in which an overhauling lead screw drives a tubular inertia member for sensing a motion threshold. Nonoverhauling threaded members are synchronized and do not contact when rotated at the proper speed by the overhauling lead screw. When the telescoping forces induce motion in the strut which is above the motion threshold, however, the nonoverhauling screw threads engage to support substantial loads in a locked strut configuration. By driving the tubular inertia member with a thin walled tubular driving element, the tubular inertia member in extremely large struts of this type may be maintained relatively small in size, so that the motion threshold sensing mechanism can also be maintained relatively small in size. The desynchronization of the threads may be caused by either a unique axial spring and ball detent combination, or a unique torque rod interconnected between the thin walled tubular driving member and the overhauling lead screw.
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