Electropneumatic horn

Details Electropneumatic horn Electropneumatic horn

2006-05-02

2006-05-02

Swarthout, Brent A. (Department: 2636)

Communications: electrical

Audible indication

Pneumatic-type sound producer

C116S13700R, C116S139000, C340S388100, C340S388400

Reexamination Certificate

active

07038576

ABSTRACT:
An electropneumatic acoustic horn is disclosed, comprising an electric compressor unit for generating compressed air and a sound wave generator comprising at least an acoustic chamber associated to at least a volute wound acoustic duct adapted to propagate the produced sound to the outside. Air channelling means put the compressor unit in communication with each acoustic chamber. The compressor unit and the sound wave generator are mechanically connected in a removable way by fitting slidingly a collar.

REFERENCES:
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patent: 1901187 (1933-03-01), Osborne
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patent: 3886546 (1975-05-01), Ueda
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patent: 4314522 (1982-02-01), Frigo
patent: 4796009 (1989-01-01), Biersach
patent: 5263435 (1993-11-01), Takahashi
patent: 6294984 (2001-09-01), Meister
patent: 6796265 (2004-09-01), Dexter et al.

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