发明名称 |
Acoustical hearing protective devices utilizing dynamically stiff foam and methods of producing same. |
摘要 |
An earmuff cushion and other foam hearing protective components such as earplugs and pods for semi-aural hearing protectors and earplugs providing improved attenuation are described. The cushion and other foam hearing protective components are comprised of a dynamically stiff foam material having a low static stiffness, and a high dynamic stiffness, which produces improved attenuation in the earmuff and other hearing protective devices in which it is used. Earmuffs made from the cushion, semi-aural hearing protectors, earplugs, and improved methods of making the hearing protective devices are also described. |
申请公布号 |
ZA9707347(B) |
申请公布日期 |
1998.03.23 |
申请号 |
ZA19970007347 |
申请日期 |
1997.08.15 |
申请人 |
CABOT SAFETY INTERMEDIATE CORPORATION |
发明人 |
ROSS GARDNER;GREGORY L. SIMON |
分类号 |
A42B1/06;A61F11/00;A61F11/08;A61F11/10;A61F11/14;C08G18/48;C08G18/66;C09D175/04;H04R1/10 |
主分类号 |
A42B1/06 |
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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