Tamper proof closure

A tamper proof closure for use in combination with a container with a neck finish having a threaded portion and a retaining means therebelow, said closure comprising:

• a body having a substantially straight side wall having an inner surface with an internally threaded portion located on said inner surface;
• a breakaway portion with a frangible portion connecting said breakaway portion to said side wall;
• said breakaway portion adapted to slide over said retaining means as the closure is threaded onto the container and having a ring thereon;
• said ring being positioned on the closures interior and approximating a wedge shape configuration having upper and lower surfaces;
• said containers neck having a retaining means thereon, said retaining means includes a flange having an upper surface which slopes downwardly and projects outwardly toward frangible portion terminating in a bottom surface, said container having an annular bead located below said bottom surface with the ring located between said annular bead and said bottom surface when the closure is fully placed on the container, and said bead, ring and retaining means being of close dimensional tolerances such that the ring is substantially fixed therebetween thereby inhibiting the introduction of an implement therebetween so as to prevent prying off of the ring from the container;
• and
• whereby when the closure is unthreaded from the container, the breakaway portion will be severed from the body at the frangible portion by the retaining means acting on the ring leaving said breakaway portion on said container as an indication of tampering.

A tamper proof closure for use in combination with a container with a neck finish having a threaded portion and a retaining means therebelow having a bottom surface, said closure comprising:

• a body having a substantially straight side wall having an inner surface with an internally threaded portion located on said inner surface and a plurality of ribs on its outer surface;
• a breakaway portion with a frangible portion connecting said breakaway portion to said side wall, said frangible portion extends outwardly to said ribs;
• said breakaway portion adapted to slide over said retaining means as the closure is threaded onto the container and having a ring adapted to be disposed below of and adjacent to said retaining means when said closure is fully threaded onto the container;
• said ring being positioned on the closures interior and adapted to be disposed adjacent to the bottom surface of the retaining means when the closure is fully threaded onto the container;
• whereby when the closure is unthreaded from the container, the breakaway portion will be severed from the body at the frangible portion by the retaining means acting on the ring leaving said breakaway portion on said container as an indication of tampering.

A tamper proof closure for use in combination with a container with a neck finish having a threaded portion and a retaining means therebelow having a bottom surface, said closure comprising:

• a top and bottom end with said closure having an uninterrupted outer surface from its top to bottom end;
• a body having a substantially straight side wall downwardly extending from the top end having an inner surface with an internally threaded portion located on said inner surface;
• a breakaway portion positioned at the bottom end with a frangible portion connecting said breakaway portion to said side wall;
• said frangible portion being formed by an undercut in the side wall which extends outwardly from said inner surface;
• said breakaway portion adapted to slide over said retaining means as the closure is threaded onto the container and having a ring adapted to be disposed below of and adjacent to said retaining means when said closure is fully threaded onto the container;
• said ring being positioned on the closures interior and being adapted to be disposed adjacent to the bottom surface of the retaining means when the closure is fully threaded onto the container;
• and
• whereby when the closure is unthreaded from the container, the breakaway portion will be severed from the body at the frangible portion by the retaining means acting on the ring leaving said breakaway portion on said container as an indication of tampering.