Rotary sound transducer

Details Rotary sound transducer Rotary sound transducer

1986-12-16

1988-08-09

Ng, Jin F.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

310 80, 340390, 340404, 381153, H04R 102, H04R 700

Patent

active

047633581

ABSTRACT:
At least one rotary vane in a tube is driven by a motor in response to an audio signal, causing production of sound through at least one opening in the tube.

REFERENCES:
patent: Re31667 (1984-09-01), Knauff
patent: 1333703 (1920-03-01), Brinks
patent: 1714516 (1929-05-01), Milecz
patent: 2429068 (1947-10-01), McIver
patent: 2550359 (1951-04-01), Levy
patent: 4564727 (1986-01-01), Danley et al.

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