Thin miniaturized dynamic-type loudspeaker

Details Thin miniaturized dynamic-type loudspeaker Thin miniaturized dynamic-type loudspeaker

1980-04-03

1982-03-02

Stellar, George G.

1791155ES, 1791155VC, 1791155ME, 179120, H04R 906

Patent

active

043179657

ABSTRACT:
The dynamic loudspeaker formed with a vibration plate disposed between a yoke and a permanent magnet is provided. The vibration plate is substantially planar formed with a central projecting cylindrical region. A voice coil is disposed on the vertical wall of the central projecting region of the vibration plate. This planar construction of the vibration plate permits a miniaturized construction making the loudspeaker particularly well suited for use in portable electronic equipment having sound making capabilities.

REFERENCES:
patent: Re26030 (1966-05-01), Marchand et al.
patent: 1478709 (1923-12-01), Gernsback
patent: 1808297 (1931-06-01), Dempster
patent: 1930186 (1933-10-01), Swallow
patent: 1951531 (1934-03-01), Ringel

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