Quickly erectable, quickly collapsible, self supporting portable structure

  • US 5,038,812 A
  • Filed: 08/18/1989
  • Issued: 08/13/1991
  • Est. Priority Date: 08/18/1989
  • Status: Expired due to Term
First Claim
Patent Images

1. A portable structure operable for transforming from a fully collapsible configuration into an upstanding fully expanded configuration and thence back into the fully collapsible configuration comprising:

  • a set of at least three side members each having;

    an independent continuous frame formed from a flexible coilable material, the frame forming a single loop when expanded, and three overlaying loops when collapsed;

    a side panel formed from a foldable material;

    first means for confining the frame, the first means having a top left part and a top right part; and

    second means for attaching the side panel to the first means,whereby when the frame is expanded the side panel is pulled taut by the frame;

    third means for hinging a portion of the top right part of the first means of one side member to a portion of the top left part of the first means of one other side member,thereby forming when the portable structure is in its fully expanded configuration a ring of side members each hinged at the top left part to another side member and at the top right part to yet another side member; and

    fourth means for holding the portable structure in the upstanding fully expanded configuration.

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