Collapsible play structures

  • US 6,752,163 B2
  • Filed: 05/15/2003
  • Issued: 06/22/2004
  • Est. Priority Date: 09/24/1991
  • Status: Expired due to Fees
First Claim
Patent Images

1. A collapsible structure, comprising:

  • at least three foldable frame members, each having a folded and an unfolded orientation, each frame member arranged between and connected to a pair of said adjacent frame members;

    wherein each frame member defines a flat panel in its unfolded orientation;

    wherein the frame members, when fully deployed, form a ring of flat panels that enclose an interior space;

    and wherein at least one of the frame members is twisted and folded to form a plurality of concentric rings in the folded orientation.

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