Method of producing hearing aids

Details Method of producing hearing aids Method of producing hearing aids

1990-05-17

1991-10-15

Echols, P. W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29557, 264 401, 36447405, H04R 2500

Patent

active

050562045

ABSTRACT:
For hearing aids to be worn in the ear initially the measurements of the inner space of the ear are determined by a laser apparatus and the measurement are stored in a computer. The computer controls a milling cutter on which a blank consisting of plastic material into which all necessary components, such as electronic amplifier and sound transducer have been molded is shaped by means of a milling operation to provide a shape corresponding precisely to the inner space of the ear. The method eliminates the time consuming work for the production of a mold and the purchaser can obtain immediately a precisely fitting hearing aid.

REFERENCES:
patent: 3345737 (1967-10-01), Gordon
patent: 3496306 (1970-02-01), Pollak
patent: 4436684 (1984-03-01), White
patent: 4663720 (1987-05-01), Durett et al.
patent: 4735759 (1988-04-01), Bellafiore
patent: 4800636 (1989-01-01), Topholm

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