Pneumatic loudspeaker with a continuous pressurized fluid flow

Details Pneumatic loudspeaker with a continuous pressurized fluid flow Pneumatic loudspeaker with a continuous pressurized fluid flow

1989-03-20

1991-10-01

Isen, Forester W.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

By modifying fluid flow

381194, H04R 2500

Patent

active

050540807

ABSTRACT:
A pneumatic loudspeaker with a continuous pressurized fluid flow modulated by an obstacle forming an integral part of a moving armature with an electromagnetic coil supported by a leakproof elastic membrane. The moving armature comprises a cylindrical support and a winding housed in a flat groove made in the body of the support, the winding and its support forming a rigid integral assembly, the winding being sandwiched between a first layer of glue coating the bottom of the flat groove and a second layer of the glue submerging the turns of the winding and endowing the assembly with a smooth and uniform surface.

REFERENCES:
patent: 1766612 (1930-06-01), De Forest
patent: 1904156 (1933-04-01), Mallina
patent: 2010529 (1935-08-01), Van Urk
patent: 2079694 (1937-05-01), Lovell et al.
patent: 2838127 (1958-06-01), Jilski et al.
patent: 2923782 (1960-02-01), Armstrong et al.
patent: 3906171 (1975-09-01), Braceley
patent: 4118605 (1978-10-01), Kobayashi
patent: 4498023 (1985-02-01), Stout

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