Megaphone apparatus

Details Megaphone apparatus Megaphone apparatus

1991-06-24

1992-11-03

Gellner, Michael L.

Acoustics

Sound-modifying means

Intensifying horn

181187, 181188, 181189, 181192, G10K 1100

Patent

active

051608154

ABSTRACT:
A megaphone apparatus includes an elongate conical conduit directed into an outwardly flaring forward body portion. The conduit includes an entrance opening, with the flaring body including a plurality of exit openings defined by a central outlet conduit coaxially aligned with the inlet conduit, with a plurality of right and left branch conduits extending laterally to each side of the central conduit aligned in a single plane along a common diameter of the various conduits. A modification of the invention includes various residence modulating caps selectively positionable over the conduits to include a flexible web, with at least one slit directed diametrically therethrough, and including a plurality of pockets arranged in a spaced relationship relative to the slit to include a flexible rod selectively positioned within each pocket as desired for varying modulation of the flexible web of each cap in use.

REFERENCES:
patent: 4040503 (1977-08-01), Hino et al.
patent: 4329905 (1982-05-01), Lloyd

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