Acoustic ear muff

Details Acoustic ear muff Acoustic ear muff

1988-08-29

1990-07-31

Fuller, Benjamin R.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

2209, 2423, A42B 106, G10K 1100

Patent

active

049443615

ABSTRACT:
An acoustic ear muff includes a pad or cup (2) which is made of rigid material and incorporates an opening for receiving one ear of the wearer, and a resilient sealing annulus (10) intended for abutment with the head of the wearer, and also resilient pressure-exerting means (5) connected to the shell of a protective helmet (1), a head strap or like head gear. The ear muff provides good acoustic damping and a high degree of comfort, owing to the fact that the resilient pressure-exerting means is configured to produce a low pressing force substantially independently of head sizes which vary within given limits. The pressure-exerting means includes, to this end, a spring element in the form of a combined torsion and bending spring.

REFERENCES:
patent: 3430261 (1969-03-01), Benner
patent: 3661225 (1972-05-01), Anderson
patent: 3944018 (1976-03-01), Satory
patent: 4069512 (1978-01-01), Palmaer
patent: 4104743 (1978-08-01), Bottger

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