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Confirming earplug

A technology for earplugs and ear canals, applied in earplugs, ear therapy, etc., can solve problems such as discomfort and pressure on the ear canal

Inactive Publication Date: 2006-11-08
BACOU USA SAFETY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If hard material is used, the flange will severely compress the ear canal, causing discomfort

Method used

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  • Confirming earplug

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] Figure 1 is a cross-sectional view of an earplug 10 of the present invention comprising a stem 12 extending along a stem and earplug axis 14 in a forward direction F and a rearward direction R. The handle 12 has a front 16 and a rear 18 . The front part carries three flanges 21-23 for sealing against the wall of the human ear canal. The stem rear 18 serves as a handle for pushing the flanges into the ear canal and subsequently pulling them out. The flanges are thin, having a radially inner end 30 joined to the shank (on their front face) and a free radially outer end 32 .

[0009] The flange and shank are integrally molded and generally made of the same resilient material, for example a material with a durometer of 30 ShoreA. The elastic material is a material having a Young's modulus of elasticity not greater than 50,000 psi. It is desirable to mold the stem from a harder material (harder) to facilitate insertion of the stem into the ear canal, and to mold the flang...

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PUM

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Abstract

An earplug of the type that has a stem (12) and a plurality of flanges (21-23), is constructed to be stiff enough to be easily inserted into the ear canal, and to thereafter press with minimal force against the walls of the ear canal for comfort. The earplug is molded of an elastomeric material whose stiffness decreases considerably, such as at least 4%, when it is warmed from room temperature (about 72< DEG > F) to ear canal temperature (about 100< DEG > F). Each flange has a radially inner portion (52) that extends straight and within 15< DEG > of a radial direction (62) (a direction perpendicular to the stem axis), and has a radially outer portion (54) that extends straight and within 20< DEG > of an axial direction (66).

Description

Background technique [0001] One widely used earplug is formed from a solid soft rubber type material and is integrally molded with a stem and a flange that extends from the stem and flexes easily as the stem is inserted into the ear canal. Earplugs with soft rubber flanges are typically formed from a material having a durometer of about 1 Shore A to 50 Shore A, and typically have a durometer of about 30 Shore A. A higher durometer (harder material) will cause the shank to become stiffer, ensuring that the earplug is pushed into the ear canal more easily. A lower durometer (softer material) results in the flange being more easily deflected by the ear canal, resulting in greater comfort. If hard material is used, the flange will severely compress the ear canal, causing discomfort. If a soft material is used, the stem tends to crimp or undergo columnar compression when the stem is pushed forward to insert the earplug into the ear canal. A solid soft rubber type earplug molded ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F11/00A61F11/08
CPCA61F11/08
Inventor T·W·弗莱明
Owner BACOU USA SAFETY
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