Structure of battery receiving chamber

Details Structure of battery receiving chamber Structure of battery receiving chamber

1991-11-22

1993-02-16

Maples, John S.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381692, 429 86, 429 98, 429100, H04R 2500, H01M 212

Patent

active

051877465

ABSTRACT:
A receiving chamber for an air cell battery for use in an electronic device having a casing 2 in which a battery receiving chamber 11 having an open upper end is defined by a wall portion thereof comprises a cover member 13 for selectively closing the open end of the battery receiving chamber, a through-hole 31; 41 formed in the battery receiving chamber for communicating the battery receiving chamber externally, and filter means 32 provided in the through-hole for repelling the water content of air supplied through the through-hole to the battery receiving chamber while allowing air to pass through.

REFERENCES:
patent: 2759038 (1956-08-01), Marsal
patent: 3507708 (1970-04-01), Vignaud
patent: 3909302 (1975-09-01), Mermelstein
patent: 4532193 (1985-07-01), Kniazzeh et al.
patent: 4916034 (1990-04-01), Hulsebus et al.

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