Swiveling sound-gathering ear guard for masks and helmets

Details Swiveling sound-gathering ear guard for masks and helmets Swiveling sound-gathering ear guard for masks and helmets

2007-07-31

2007-07-31

Donovan, Lincoln (Department: 2837)

Acoustics

Anatomic or prosthetic relation

Ear and mouth

C181S136000, C181S133000, C002S209000, C002S423000, C002S425000

Reexamination Certificate

active

11096169

ABSTRACT:
A portion of a mask or helmet covering a user's ear has an aperture covered by a sound-collecting and sound-transmissive protector swivelingly mounted thereon. The protector has a substantially parabolic reflector surface oriented substantially perpendicular to the protector's axis of rotation which magnifies sounds arriving from a particular angular direction and directs the sound through a plurality of holes axially penetrating through the protector from an outer to an inner surface. A user manipulable actuator nib extends axially outwardly from a peripheral portion of the outer surface of the protector allowing user control of swiveling movement.

REFERENCES:
patent: 3239842 (1966-03-01), Marchello
patent: 3496854 (1970-02-01), Hill et al.
patent: 3500475 (1970-03-01), Norimoto
patent: 4633532 (1987-01-01), Yagasaki
patent: 4958697 (1990-09-01), Moody
patent: 5696356 (1997-12-01), Dudley et al.
patent: 6065157 (2000-05-01), Felman
patent: 6347412 (2002-02-01), Dorman

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