Article of rolled form

Details Article of rolled form Article of rolled form

1985-04-29

1986-09-23

Fuller, Benjamin R.

Acoustics

Sound-modifying means

Intensifying horn

G10K 1100

Patent

active

046130128

ABSTRACT:
An article of rolled form constructed of card-like semirigid flexible material assembled by rolled assembly to form an article of annular cross sectional shape. The article is preferrably a megaphone with the advantages of having a complimentary handle comprised of a double thickness of the card-like material and additional tabs placed to add rigidity and maintain circular shape.

REFERENCES:
patent: 936910 (1909-10-01), Kingsley
patent: 1158871 (1915-11-01), Tomlin
patent: 2507843 (1950-05-01), Wheeler
patent: 2517665 (1950-08-01), Hochstein

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