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High attenuating earmuff device

A technology for earmuffs and earmuffs, which is applied to earmuffs, clothing, hats, etc., can solve the problems of large earmuffs, difficult to wear, and low comfort.

Inactive Publication Date: 2007-02-07
卡伯特安全媒介公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While these attempts may have resulted in increased attenuation, the resulting earmuffs were often found to be larger, heavier, more difficult to fit, and generally less comfortable than traditional earmuff assemblies

Method used

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  • High attenuating earmuff device
  • High attenuating earmuff device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] figure 1 and 2 Shown is an earmuff assembly 10 in a representative embodiment of the present invention. The earmuff device 10 basically includes a generally U-shaped resilient connecting band 12 and a pair of ear cup assemblies 14 and 16 connected to opposite ends of the connecting band 12 .

[0013] The earcup assemblies 14 and 16 are attached to the connecting strap 12 in any desired manner. Most preferably, the earcup assemblies 14 and 16 are connectable to adapters which in turn are connected to the connecting strap 12 . The adapter can be configured to allow the earmuff cup assemblies 14 and 16 to pivot or rotate relative to the connecting band 12, or alternatively, the adapter can keep the assemblies 14 and 16 stationary on the connecting band 12 , and so on.

[0014] Each of the earcup assemblies 14 and 16 includes a rigid earcup 18 , a cushion 20 and an earcup liner 22 . Rigid cup 18 generally consists of two components, cup-shaped portion 24 and gasket sea...

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PUM

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Abstract

An earmuff device is provided, including a connecting band having opposing first and second ends, a pair of earmuff cup assemblies connected to the opposing first and second ends of the connecting band, a first foam disposed at the earmuff cup assemblies, and a second foam disposed at the earmuff cup assemblies, where the first foam comprises a moderately high density foam having highly engineered polymer transition properties with precise loss factor values, modulus values, and polymer transition values and maximum damping at prescribed temperature and frequency conditions, and where the second foam comprises a rnoderately high density hydrophilic foam particularly employed for optimal property convergence in cell size, air flow, density, and static stiffness. An earmuff cup, an earmuff cushion, and an earrnuff liner including the respective first and / or second foams, are also provided.

Description

technical field [0001] The present invention relates generally to acoustical hearing protection devices and, more particularly, to an earmuff device comprising foam material for providing high sound attenuation to the wearer. Background technique [0002] Ear muffs are typically used to protect hearing from damage in environments where noise levels cannot be controlled within safe limits. These devices generally include a pair of rigid cups connected by a headband, each cup having an interior padded with sound-absorbing material and extending from the cups toward the wearer's head such that the respective cup seals to the wearer's head around the ears. padding. [0003] These earmuffs are believed to have certain advantages over other forms of hearing protection, such as earplugs. For example, for intermittent use situations, it is preferable to use earmuffs, since continuous insertion and removal of the earbuds would be annoying and impractical. In addition, earmuffs off...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F11/14A42B1/06
CPCA61F11/14
Inventor 埃利奥特·伯杰比约恩·雅各布森
Owner 卡伯特安全媒介公司