Title: Single-housing multi-trumpet air horn

Abstract: Disclosed is an air horn comprising a housing and at least two amplifying trumpets attached thereto. Air may be fed from a single source into two sound-generating chambers with which the trumpets are connected by separate passageways to diaphragm-restricted openings of the chambers.

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Inventors: Palm, Walter C. (Grand Rapids, MI, US)

Application Number: 671593
Filing Date: 1976-03-29
Publication_date: 1977-09-27
Assignee: Midland-Ross Corporation (Cleveland, OH)
Primary Class(es): 116/142FP
Other Classes:
US Patent Ref:

1898536	Feb, 1933	Hewitt	116/142.
1943671	Jan, 1934	Hewitt et al.	116/142.
1980296	Nov, 1934	Scofield et al.	116/140.
2477427	Jul, 1949	Siegert	116/142.
2502354	Mar, 1950	Swanson	116/142.
2944509	Jul, 1960	Shintaku	116/137.
3420207	Jan, 1969	Holm	116/142.

Other Refs:
Primary Examiner: Yasich, Daniel M.
Assistant Examiner:
Attorney: Portz; Woodrow W.