发明名称 SPRING ARRANGEMENT FOR A RECREATIONAL STRUCTURE
摘要 A spring arrangement for a trampoline includes a rebounding surface, a frame structure having a top portion and a bottom portion, and a plurality of spring members that are mechanically coupled between the rebounding surface and the frame structure. A first group of spring members are mechanically coupled to the top portion of the frame structure and a second group of spring members are mechanically coupled to the bottom portion of the frame structure. In one exemplary embodiment, the spring members of the first group and the second group are alternately arranged along the frame structure. In another exemplary embodiment, the frame structure is formed by a plurality of frame members.
申请公布号 US2006258509(A1) 申请公布日期 2006.11.16
申请号 US20050908470 申请日期 2005.05.12
申请人 ADAMS CRAIG 发明人 ADAMS CRAIG
分类号 A63B5/11 主分类号 A63B5/11
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