초록 ▼

Two curved arch rib supports are provided with a pre-shaped flexible membrane cover attached to the ribs; the ends of the ribs are hinged on a common locus at base supports. When erected, a saddle shaped roof is formed to which contoured end walls may be added. Additional modules may be joined to th

Two curved arch rib supports are provided with a pre-shaped flexible membrane cover attached to the ribs; the ends of the ribs are hinged on a common locus at base supports. When erected, a saddle shaped roof is formed to which contoured end walls may be added. Additional modules may be joined to the structure so formed, by applying a pre-shaped and independent fabric membrane or cable net attached by rings to only each of the two structure base pivot axles. A catenary cable and web belt stress concentrator connect each ring to its opposite on each separate structure. The cable and web are of pre-set length and are shorter than the perimeter of the outer chord of the beam. Alternatively, for joining a plurality of the saddle shaped structures, geodetic stress concentrators may be added to enhance and maintain the shape and performance of the cable net, thus stabilizing and drawing pre-stress or wind reactions from the membrane and facilitating their efficient flow to the ground anchors in purely tensile forces.

대표청구항 ▼

[ What we claim as our invention is:] [1.] A collapsible shelter comprising:(a) first and second arched rib supports each having distal ends, the distal ends of the first arched rib support hingedly coupled to the corresponding distal ends of the second arched rib support;(b) a pre-shaped flexible m

[ What we claim as our invention is:] [1.] A collapsible shelter comprising:(a) first and second arched rib supports each having distal ends, the distal ends of the first arched rib support hingedly coupled to the corresponding distal ends of the second arched rib support;(b) a pre-shaped flexible membrane secured to said first and second arched rib supports and having sufficient area so that when said first and second arched rib supports are rotated to a substantially upwardly position a saddle-shaped structure is formed; and(c) a pre-shaped joiner membrane operative to connect said collapsible shelter to at least one other substantially identical collapsible shelter in a substantially interconnecting position; and rein each of said first and second arched rib supports is a truss structure having at least three spaced apart substantially parallel arched chords including an outer chord and an inner chord.