Back pressure operated sound transmitter

Details Back pressure operated sound transmitter Back pressure operated sound transmitter

1974-09-10

1976-03-09

Queisser, Richard C.

Signals and indicators

Horns, whistles and compressional wave generators

Diaphragm horns

G10K 900

Patent

active

039424685

ABSTRACT:
In a pressure gas driven, back pressure operated sound transmitter a damping chamber having an interior volume at least approximately equal to that of the back pressure chamber is inserted between the operating valve connected to the back pressure chamber and the throttle device bleeding gas from the back pressure chamber into the ambient atmosphere.

REFERENCES:
patent: 2177594 (1939-10-01), Eaves
patent: 2396423 (1946-03-01), Hines
patent: 3581705 (1971-06-01), Holm
patent: 3791339 (1974-02-01), Dahlquist

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