Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Patent
1989-02-28
1992-08-04
Dwyer, James L.
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Plural or compound reproducers
381183, 381188, 379430, 2421, H04R 2500, H04M 100, A42B 700
Patent
active
051366576
ABSTRACT:
A helmet having a sound device therein, includes a shell of a rigid material for protecting the head of a wearer, a liner mounted inside the shell and filled with a buffer material, and a speaker mounted inside a lower end portion of the shell or inside of the chin guard of the helmet. The speaker may be facing inwardly or outwardly. A plurality of speakers may also be employed. The positioning of the speaker as described above enables the wearer of the helmet to hear the sounds from the speaker without altering the shape of the helmet shell to position the speaker near the ears.
REFERENCES:
patent: 3088002 (1963-04-01), Heisig
patent: 3187115 (1965-06-01), Mullin
patent: 3190973 (1965-06-01), Aileo
patent: 4130803 (1978-12-01), Thompson
patent: 4400591 (1983-08-01), Jennings et al.
patent: 4471174 (1984-09-01), Nava
patent: 4517417 (1985-05-01), Murayama
patent: 4556121 (1985-12-01), Palmaer et al.
patent: 4636592 (1987-01-01), Scott
Chan Jason
Dwyer James L.
Honda Giken Kogyo Kabushiki Kaisha
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