초록

A structural module formed by expanding a bundle of struts joined by hubs is locked in expanded condition by joining two components of a split hub assembly. The module may be two-dimensional or three-dimensional and plural modules may be combined to form a composite.

대표청구항 ▼

A structural module which is capable of being manipulated between a collapsed condition and an expanded, locked condition, which comprises: a plurality of rod elements which are disposed generally parallel and in a bundle when said module is in collapsed condition, a first group of hub means pivotal

A structural module which is capable of being manipulated between a collapsed condition and an expanded, locked condition, which comprises: a plurality of rod elements which are disposed generally parallel and in a bundle when said module is in collapsed condition, a first group of hub means pivotally associated with those ends of said rod elements which project toward one end of said bundle and a second group of hub means pivotally associated with those ends of said rod elements which project toward the other end of said bundle, at least some of the hub means of said first group pivotally joining some of said rod elements to each other and at least some of the hub means of said second group pivotally joining some of said rod elements to each other such that said hub means move into a predetermined, pattern as the module is manipulated to expanded condition; at least one pair of hub means comprised of a hub means of said first group and a hub means of said second group constituting a split hub assembly occupying a particular position in said pattern; and means for locking said pair of hub means together to maintain the frame in expanded condition.