Earseal for sound-attenuating earcup assembly

Details Earseal for sound-attenuating earcup assembly Earseal for sound-attenuating earcup assembly

1989-06-29

1991-06-04

Nerbun, Peter

Apparel

Head coverings

Convertible

381183, 181129, A42B 106

Patent

active

050201638

ABSTRACT:
A resilient annular earseal for sealing the region between an earcup shell and a wearer's head is formed with an aperture for receiving the wearer's ear and has an outer peripheral portion projecting a predetermined first distance toward the wearer's head and an inner peripheral portion projecting a predetermined second distance toward the wearer's head that is appreciably greater than the first distance. Since the inner peripheral portion contacts the wearer's head along a strip that is closer to the ear, and hence more predictable in its three-dimensional contour, it forms an effective seal around the entire periphery of the ear.

REFERENCES:
patent: 3593341 (1971-07-01), Aileo
patent: 3875592 (1975-04-01), Aileo
patent: 3938614 (1976-02-01), Ahs
patent: 4856118 (1989-08-01), Sapiejewski

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