Cleanable in-the-ear electroacoustic transducer

Details Cleanable in-the-ear electroacoustic transducer Cleanable in-the-ear electroacoustic transducer

1987-10-14

1989-01-31

Fuller, B. R.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181135, 181160, 381 686, 381 692, 381159, H04R 2500

Patent

active

048009822

ABSTRACT:
A hearing aid including a microphone, an adjustable amplifier, and a transducer comprising an acoustic driver driving a diaphragm disposed within an acoustic chamber, all mounted in an in-the-ear housing having a sound outlet passage leading from the acoustic chamber into the user's ear canal, is provided with a cleaning passage that is accessible from the outside of the housing and that connects to the inner end of the sound outlet passage, through a portion of the acoustic chamber. Throughout internal cleaning is effected by pumping a solvent through the continuous conduit formed by the cleaning passage, the acoustic chamber, and the sound outlet passage, without disassembly of the hearing aid.

REFERENCES:
patent: 1830198 (1931-11-01), French
patent: 2312534 (1943-03-01), Fiene
patent: 3470328 (1969-09-01), Daniels
patent: 3602330 (1971-08-01), Johnson
patent: 3702123 (1972-11-01), Macken et al.
patent: 3918550 (1975-11-01), Milani
patent: 3934100 (1976-01-01), Harada
patent: 4349082 (1982-09-01), Gastmeier
patent: 4443668 (1984-04-01), Warren
patent: 4553627 (1985-11-01), Gastmeier et al.
patent: 4679650 (1987-07-01), Moser et al.

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