Microphone for the transmission of body sounds

Details Microphone for the transmission of body sounds Microphone for the transmission of body sounds

1975-06-17

1977-03-15

Stellar, George G.

Surgery

Truss

Pad

179 1ST, 179110A, 128 205S, 181171, H04R 146, H04R 722

Patent

active

040126048

ABSTRACT:
A microphone for the transmission and conversion of low frequency body sound signals, characteristic of blood pressure conditions, the microphone featuring a Seignette salt crystal wafer as a transducing element, a foamed body as a transmitting element, a vibrating mass on the microphone membrane, and a deflection-limiting safety plate. The membrane carries a contact-focusing touch plate, and the entire housing is enveloped in a sound insulating rubber jacket.

REFERENCES:
patent: 392763 (1888-11-01), Tainter
patent: 1236476 (1917-08-01), Penney
patent: 2121779 (1938-06-01), Ballantine
patent: 2702354 (1955-02-01), Chordening
patent: 3157246 (1964-11-01), Howell
patent: 3182129 (1965-05-01), Clark et al.
patent: 3387149 (1968-06-01), Young
patent: 3682161 (1972-08-01), Alibert
patent: 3767004 (1973-10-01), Liebscher
patent: 3868954 (1975-03-01), Ueda

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