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1. 发明授权

US4998552A Geodetic tent structure 失效
标题翻译：大地帐篷结构
公开(公告)号：US4998552A
公开(公告)日：1991-03-12
申请号：US406233
申请日：1989-09-12
申请人： Mark R. Niksic , Mark E. Erickson
发明人： Mark R. Niksic , Mark E. Erickson
IPC分类号： E04H15/42 , E04B1/344 , E04H15/36 , E04H15/48
CPC分类号： E04B1/3441 , E04H15/36 , E04H15/48
摘要： A self supporting collapsible tent structure having a tension bearing polygonal shaped floor member defining a first tent level, a plurality of hub members each carrying a plurality of sockets which are pivotal about axes which are co-planer and are interrelated one to the other as the sides of polygon, a series of said hub members disposed in a plane at a second tent level which is spaced apart from said first tent level and whose sockets are pivotal in a first direction, and additional series of said hub members disposed in a plane at a third tent level which is spaced apart from said second tent level and whose sockets are pivotal in a second direction, opposite to the said first direction, a single, apex forming hub member disposed at a fourth tent level and whose sockets are pivotal in said first direction, a first plurality of compression rods, the ends of which are seated in the said sockets of the hub members in slightly curved polygonal planes defined and bounded by the rod members and a second plurality of compression rods, one end of which are seated in sockets of the hub members at the second tent level and the other end of which are connected to the perimeter of the floor member.

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