发明名称 |
Earplug with insertion stem |
摘要 |
An earplug is provided, of a type that includes a soft shell (12) and an insertion stem (16), which facilitates pullout of the earplug from the ear canal and which has an increased ability to block noise. The earplug includes a body or shell of soft elastomeric material with a forward portion (20) constructed to enter the ear canal and a rearward portion (22) which flares in a rearward direction. A stem (16) of more rigid material than the shell, extends along most of the length of a passage (14) formed within the shell. The shell passage has a neck part (42) at the rear of the shell forward portion. The stem has a forward flange (32) lying in interference fit within the passage at a location forward of the passage neck part, and the stem has a rearward flange (34) that lies in interference fit with the flared rear portion of the shell.
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申请公布号 |
US6006857(A) |
申请公布日期 |
1999.12.28 |
申请号 |
US19980075141 |
申请日期 |
1998.05.08 |
申请人 |
HOWARD LEIGHT INDUSTRIES |
发明人 |
LEIGHT, HOWARD S.;TIEMENS, JIM |
分类号 |
A61F11/08;A61F11/10;A61F11/12;(IPC1-7):A61B7/02 |
主分类号 |
A61F11/08 |
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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