Collapsible play structures
Patent 5560385 Issued on October 1, 1996. Estimated Expiration Date: 
July 27, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 27, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2057942 2879553 3675667 3733758 3880459 Portable structure Separably connective flexible toy Portable structure Temporary structure Arch supported tent InventorApplicationNo. 281369 filed on 07/27/1994US Classes:135/125, Flexible structure135/117, Closure, viewing window, awning, or sunshade135/130, Having link means135/137, Having floor or base member220/9.3Laterally collapsible or foldableExaminersPrimary: Mai, LannaAttorney, Agent or FirmForeign Patent References
International ClassE04H 015/40AbstractA collapsible play structure has one or more play modules connected together, each play module comprising at least three foldable frame members, each having a folded and an unfolded orientation. A fabric material substantially covers each frame member to form a side panel for each frame member when the frame member is in the unfolded orientation. Each side panel further comprises at least three sides. The left side of each side panel is connected and hinged to the right side of an adjacent side panel, and the right side of each side panel is connected and hinged to the left side of another adjacent side panel. The bottom side of each side panel is adapted to rest on a supporting surface to support the play module.Other References
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