Megaphone-cup

Claim 2

A hollow frustoconical structure of circular right section with respect to its longitudinal axis, said structure having ends which are defined by rounded edges concentric with said longitudinal axis and which lie in planes perpendicular to said axis, such as to enable standing the structure upright on the smaller end in stable equilibrium and a closure member at the smaller end situated inwardly from the rounded edge forming a bottom for the structure to enable using the structure as a receptacle when set down upon its smaller end, means detachably connecting the bottom to the wall of the structure inwardly of said rounded edge to enable removing the bottom so that the structure may be used for a megaphone and said smaller end of the structure being consistent in diameter with the diameter of the mouthpiece of a conventional megaphone.

Claim 3

A structure according to claim 1 wherein a portion of the side wall at the smaller end is provided with a lesser taper than that above it to be more nearly consistent with a mouthpiece.

Claim 4

A hollow, elongate, one-piece structure molded of polyolefin, said structure having a tapering side wall symmetrically with respect to its longitudinal axis and being truncated at its smaller end in a plane perpendicular to said axis such that the edge of the side wall at the smaller end serves as a base for supporting the structure in an upright position of stable equilibrium, said edge being smoothly rounded, an end wall at the smaller end situated inwardly of the plane of said smoothly rounded edge integrally connected to the side wall of the structure, said end wall forming a bottom for the structure when set upright on its truncated end to enable using the structure as a receptacle, a portion of reduced thickness connecting the end wall to the side wall of the structure of sufficient strength to withstand pressure on the bottom when the structure is filled with liquid, but frangible enough to enable detaching it from the side wall inwardly of the rounded edge by applying a force perpendicular to the bottom to open the smaller end without modifying the rounded end structure of the side wall at the smaller end as a mouthpiece for using the structure as a megaphone and wherein the smaller end is of a diameter consistent with the mouthpiece of a conventional magaphone.

Claim 5

A hollow, elongate, one-piece structure molded of polyolefin, said structure having a tapering side wall symmetrically with respect to its longitudinal axis and being truncated at its smaller end in a plane perpendicular to said axis such that the edge of the side wall at the smaller end serves as a base for supporting the structure in an upright position of stable equilibrium, said edge being smoothly rounded, an end wall at the smaller end situated inwardly of the plane of said smoothly rounded edge integrally connected to the side wall of the structure, said end wall forming a bottom for the structure when set upright on its truncated end to enable using the structure as a receptacle, a portion of reduced thickness connecting the end wall to the side wall of the structure of sufficient strength to withstand pressure on the bottom when the structure is filled with liquid, but frangible enough to enable detaching it from the side wall inwardly of the rounded edge by applying a force perpendicular to the bottom to open the smaller end without modifying the rounded end structure of the side wall at the smaller end as a mouthpiece for using the structure as a megaphone and wherein the smaller end is of a diameter consistent with the mouthpiece of a conventional magaphone.

Claim 6

A structure according to claim 3 wherein a portion of the side wall at the smaller end is provided with a lesser taper than that above it to be more nearly consistent with a mouthpiece.