发明名称 |
Swinging seat with spring suspension |
摘要 |
A swinging seat includes suspension members having coil springs of nonlinear response so that the seat has a desirable bouncy feel for a wide range of weights supported on the seat. The springs in one embodiment are barrel shaped having coils of maximum diameter at the middle and coils of minimum diameter at the opposite ends of the spring.
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申请公布号 |
US6623368(B1) |
申请公布日期 |
2003.09.23 |
申请号 |
US20000569539 |
申请日期 |
2000.05.12 |
申请人 |
LEVI TOOL AND MOLD CORPORATION |
发明人 |
LEVI MICHAEL |
分类号 |
A47C3/02;A47D13/10;A63G9/14;F16F1/04;F16F1/08;F16F1/12;F16F15/067;(IPC1-7):A63G9/14 |
主分类号 |
A47C3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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