Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Patent
1996-12-04
1998-09-01
Kuntz, Curtis
Electrical audio signal processing systems and devices
Hearing aids, electrical
Specified casing or housing
381190, 381191, 381188, 381156, 381160, 310322, 310324, 181159, 181155, H04R 2500
Patent
active
058021965
ABSTRACT:
A speaker is adapted to transmit sound waves in an omni-directional manner relative to an installation surface upon which the speaker is mounted. The speaker includes an oscillator having a hemispherical oscillating body comprising a piezoelectric body polarized in a thickness direction thereof, a pair of electrodes provided on an inner surface and an outer surface of the oscillating body, input terminals connected to the electrodes via lead wires, an end portion of the oscillator being connected to spacers in a groove to cover a projecting portion of a horn, a cavity communicating with a hole of the horn and being defined between the oscillator and the horn and support members fixed to a flange portion of the horn whereby a sound transmission path communicating with the hole of the horn is defined between the horn and the installation surface upon which the speaker is mounted such that the sound transmission path extends in all directions relative to the installation surface.
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Barnie Rexford N.
Kuntz Curtis
Murata Manufacturing Co. Ltd.
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