发明公开
- 专利标题： COMBINED CYLINDRICAL AND CONICAL SPRINGS
- 专利标题（中）： 组合圆柱和锥形弹簧
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申请号： EP08843531.8申请日： 2008-10-28
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公开(公告)号： EP2209403A2公开(公告)日： 2010-07-28
- 发明人: DEFRANKS, Michael, S. , LYNN, Jeremy
- 申请人： Dreamwell, Ltd.
- 申请人地址： 2215 B Renaissance Drive Suite 12 Las Vegas, NV 89119 US
- 专利权人： Dreamwell, Ltd.
- 当前专利权人： Dreamwell, Ltd.
- 当前专利权人地址： 2215 B Renaissance Drive Suite 12 Las Vegas, NV 89119 US
- 代理机构： Boyce, Conor
- 优先权： US978869 20071029
- 国际公布： WO2009058251 20090507
- 主分类号： A47C23/06
- IPC分类号： A47C23/06
摘要：
A mattress comprising asymmetrical coil springs with nonlinear spring rates provides comfort to users with different weights. The lower portion of the spring is cylindrical and the upper portion is conical or frustoconical. This arrangement causes the spring to undergo linear compression before undergoing nonlinear compression. The result is a mattress that is sufficiently soft for lighter users and sufficiently firm for heavier users.
公开/授权文献
- EP2209403B1 COMBINED CYLINDRICAL AND CONICAL SPRINGS 公开/授权日：2016-05-18
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