Selective nonlinear attenuating earplug
First Claim
1. A hearing protector earplug capable of selectively attenuating noises comprising:
- an assembly which includes selectively engageable parts for manual adjustment between at least a first orientation and a second orientation so as to selectively attenuate noises;
wherein the assembly includes;
a stalk member having a stalk aperture;
a stem having a stem aperture;
a sound channel through the stalk member and the stem; and
wherein the stem is rotatably coupled to the stalk member and in the first orientation the stem aperture and the stalk aperture are axially aligned to form an inlet aperture in the sound channel and in the second orientation the stem aperture and the stalk aperture are not axially aligned.
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Accused Products
Abstract
The present invention presents a selective nonlinear attenuating earplug. The earplug is tunable by the wearer and permits the wearer to select the performance of the earplug. The earplug of the present invention can function either in a selective attenuation mode or a maximum attenuation mode. The selective capability of the earplug permits a wearer to select the degree of desired sound attenuation depending upon the particular environment surrounding the wearer. In the selective attenuation mode, sound attenuation is low for a specific range of intensities and increases for sounds with intensity above those in the specified range. Selective attenuation is especially effective for the loudest noises. The advantage of a selective attenuation mode is especially realized when the wearer wishes to receive an intelligible speech transmission while being situated in a noisy environment while still protecting the wearer from dangerous noises. The present invention is particularly useful when the noisy environment is caused by high continuous or pulsed noises, such as gunshots or those noises generated in an industrial setting. In the maximum attenuation mode, the hearing protector stops all sounds throughout the frequency range, regardless of their intensity.
122 Citations
27 Claims
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1. A hearing protector earplug capable of selectively attenuating noises comprising:
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an assembly which includes selectively engageable parts for manual adjustment between at least a first orientation and a second orientation so as to selectively attenuate noises;
wherein the assembly includes;a stalk member having a stalk aperture; a stem having a stem aperture; a sound channel through the stalk member and the stem; and wherein the stem is rotatably coupled to the stalk member and in the first orientation the stem aperture and the stalk aperture are axially aligned to form an inlet aperture in the sound channel and in the second orientation the stem aperture and the stalk aperture are not axially aligned. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of selectively attenuating sound in an earplug comprising:
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providing a stalk member having a stalk passage way and a stalk aperture; providing a stem having a stem passage way, stem cavity and stem aperture; inserting the stem into the stalk cavity; and rotating the stem relative to the stalk member to change the attenuation of the earplug. - View Dependent Claims (24, 25, 26, 27)
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Specification