Double valve mechanism for an acoustic modulator

Details Double valve mechanism for an acoustic modulator Double valve mechanism for an acoustic modulator

1989-08-23

1990-01-16

Rosenthal, Arnold

Fluid handling

Systems

Multi-way valve unit

251 65, 25112905, 25112901, 367140, F16K 3108, F16K 326, H04R 900

Patent

active

048936553

ABSTRACT:
A double valve mechanism which is the functioning part of an acoustic modtor which regulates airflow by creating air pressure variations. A pair of cylindrical shaped members, each of which has a plurality of elongated ports therein move relative to each other through electro-magnetic excitation. The motion of the two cylindrical shaped members is reciprocating causing the ports to first open and then close, thereby modulating the air flowing through the acoustic modulator. Linear motion of the cylindrical shaped members to displace the same port area is only one half of the linear motion required in a previous design, resulting in an acoustic energy output waveform having a frequency which is double the frequency of an electrical sinusoidal input signal supplied to the acoustic modulator.

REFERENCES:
patent: 2993488 (1961-07-01), Stec
patent: 4483369 (1984-11-01), Akagi et al.

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