Electric alarm siren with arc-like runner legs

Details Electric alarm siren with arc-like runner legs Electric alarm siren with arc-like runner legs

1984-08-14

1987-09-01

Caldwell, Sr., John W.

Communications: electrical

Audible indication

Pneumatic-type sound producer

116147, E01F 900

Patent

active

046911944

ABSTRACT:
An electric alarm siren of low power has a relatively high sound intensity and a good timbre due to a runner with arch-shaped blades.
The electric alarm siren includes a central part which is divided by a partition wall into a driving part with a built-in motor being enclosed in a compact whole by a cover, and into an acoustical part comprising the runner and a front part.

REFERENCES:
patent: 2017132 (1935-10-01), Ricci
patent: 2314260 (1943-03-01), Williamson
patent: 2756416 (1956-07-01), Griparis
patent: 2855141 (1958-10-01), Van Rijn
patent: 2926838 (1960-03-01), Van Rijn
patent: 3029870 (1962-04-01), Heller
patent: 3121220 (1964-02-01), Buckwalter
patent: 3237849 (1966-03-01), Krell
patent: 3310698 (1967-03-01), Krell
patent: 3378192 (1968-04-01), Friese
patent: 3453616 (1969-07-01), Murray
patent: 4063852 (1977-12-01), O'Connor
patent: 4138673 (1979-02-01), Faust
patent: 4393374 (1983-07-01), Bandelj
patent: 4558656 (1985-12-01), Powell
Abstract of French Patent Document 2,275,839.

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