Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent
1989-09-14
1990-12-18
Fuller, Benjamin R.
Acoustics
Anatomic or prosthetic relation
Ear and mouth
181148, 181153, 181199, 381183, 381187, 2 6, 2423, H05K 500, H04R 2500
Patent
active
049779753
ABSTRACT:
A vented speaker enclosure for use in the ear pockets of motorcycle helmets is disclosed which carries off parasitic sound waves emitted from the rear side of an enclosed audio loudspeaker in order that the parasitic sound waves not be allowed to enter the motorcycle rider's ear and distort the primary sound waves issued from the audio loudspeaker. The vented speaker enclosure consists of a pair of joined together cup-shaped housing assemblies adapted to enclose and secure the audio loudspeaker, having openings in one face of the housing assemblies to allow passage of the sounds waves from the contained louspeaker, and a venting tube connected to an opening through the peripheral wall of the speaker enclosure, the vent tube carrying off and away the parasitic sounds emanating from the rear of the loudspeaker. The venting tube is situated in creases of the helmet inner cushion leading to the outside.
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Lazzeroni John J.
Lazzeroni Melinda K.
Fuller Benjamin R.
McClanahan J. Michael
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