Collapsible Strut Construction

摘要

A collapsible strut construction, manually movable between an extended, locked position and a retracted, unlocked position, with at least an outer tubular strut, an inner tubular strut slidable within the outer tubular strut and a pull-rotation mechanism configured to lock and unlock under load the outer tubular strut and the inner tubular strut together in the extended position. The pull-rotation mechanism has at least a plurality of locking dogs, a locking groove configured to house the plurality of locking dogs in the extended, locked position, an elastic member and a locking collar slidable and rotatable within the outer tubular strut and around the inner tubular strut, having the locking collar a crenel end with a plurality of cutouts.

主权项

1. A collapsible strut construction, manually movable between an extended, locked position and a retracted, unlocked position, comprising:
an outer tubular strut; an inner tubular strut slidable within the outer tubular strut; and a pull-rotation mechanism configured to lock and unlock under load the outer tubular strut and the inner tubular strut together in the extended position, the pull-rotation mechanism further comprising a plurality of locking dogs, a locking groove configured to house the plurality of locking dogs in the extended, locked position, and an elastic member; wherein the pull-rotation mechanism further comprises a locking collar slidable and rotatable within the outer tubular strut and around the inner tubular strut; wherein the locking collar further comprises a crenel end having a plurality of cutouts; wherein the locking collar and the elastic member are configured to cooperatively bias the plurality of locking dogs into the locking groove; and wherein that the elastic member is compressed and the cutouts of the crenel end are aligned with each one of the locking dogs in the extended, unlocked position.