Surgery – Respiratory method or device – Means for transmitting – or facilitating – voice communication...
Patent
1991-03-04
1993-07-06
Burr, Edgar S.
Surgery
Respiratory method or device
Means for transmitting, or facilitating, voice communication...
12820617, 381169, A62B 1808, A62B 1900, H04R 2500
Patent
active
052244733
ABSTRACT:
An electrical amplifier unit which removably attaches to a gas mask and includes a microphone for detecting voice sounds emitted by the wearer of the gas mask, circuitry for amplifying the detecting sound, and a loudspeaker for emitting the amplified sounds externally of the mask. The associated components are contained within a housing which can be disassembled and which also contains a removable battery pack. The housing also is sealed from the external environment when completely assembled. The circuitry amplifies and filters the signals converted by the microphone and supplies a signal to the loudspeaker which is enhanced in the high frequency range but limited in the low frequency range so that the emitted voice sound is crisp and intelligible. The amplifier unit is attachable to some gas masks without additional hardware and to others with a removable adaptor. In either case, the amplifier unit does not affect the structural and functional integrity of the host mask.
REFERENCES:
patent: 3180333 (1965-04-01), Lewis
patent: 3218607 (1965-11-01), Brock et al.
patent: 3314424 (1967-04-01), Berman
patent: 4122302 (1978-10-01), Bobb
patent: 4508936 (1985-04-01), Ingalls
patent: 4683588 (1987-07-01), Goldberg
patent: 4736740 (1988-04-01), Parker et al.
patent: 4885796 (1989-12-01), Loftus et al.
patent: 4901356 (1990-02-01), Bauer
patent: 4980926 (1990-12-01), Noetzel
patent: 5138666 (1992-08-01), Bauer et al.
patent: 5159641 (1992-10-01), Sopko et al.
Asher Kimberly L.
Burr Edgar S.
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