Solar powered hearing aid and reenergizer case

Details Solar powered hearing aid and reenergizer case Solar powered hearing aid and reenergizer case

1991-03-18

1993-05-11

Ng, Jin F.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 68, 381 69, 136291, H04R 2500

Patent

active

052108040

ABSTRACT:
In-the-ear type hearing aid has a rechargeable storage cell permanently connected and permanently situated within its shell, and a solar cell carried on its back plate and facing outward. The solar cell provides power to energize the hearing aid amplifier while the device is worn and also reenergizes the storage cell under average ambient conditions. The solar cell serves as a noise filter to reduce the background noise apparent to the wearer. A semi-transparent cover or door cosmetically conceals the solar cell while the aid is being worn, but permits some ambient light to penetrate to the solar cell. For recharging, the door can be opened for full exposure on to the solar cell. A combination storage and reenergizing case is provided for the hearing aids.

REFERENCES:
patent: 2901551 (1959-08-01), Passow
patent: 2950357 (1960-08-01), Mitchell et al.
patent: 3007110 (1961-10-01), Rosenstrach
patent: 3818691 (1974-06-01), Uchiyama
patent: 3921049 (1975-10-01), Mellors et al.
patent: 4379988 (1983-04-01), Mattatall
patent: 4800803 (1989-01-01), Farmont
patent: 4882239 (1989-11-01), Grimmer et al.
"The Dawn of a New Era in Hearing. The SA-2000 Solar-Energized Hearing Aid", Solar Aid Corp.
Technological Reports "The rechargable hearing instrument system" Toni Gitles, vol. 38, No. 7 1987 pp. 16 and 17.

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