Surgery – Respiratory method or device – Means for transmitting – or facilitating – voice communication...
Patent
1991-06-10
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
052244741
ABSTRACT:
An electrical amplifier unit which removably attaches to a gas mask and includes a separate 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, except for the microphone, 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 sound is crisp and intelligible voice sounds. The microphone attaches over the mechanical emitter of the mask remote from the amplifier unit and is connected to an adaptor which mounts the amplifier unit onto the mask. The adaptor attaches to the noise piece of the mask without disturbing the structural integrity of the 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.
LandOfFree
Retrofitting gas mask voice amplifier unit with easily actuated does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Retrofitting gas mask voice amplifier unit with easily actuated , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Retrofitting gas mask voice amplifier unit with easily actuated will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1683565