초록 ▼

A tamper evident closure for a container generally having a cylindrical upstanding neck or throat, the neck having an external thread. The closure comprises an annular element which slides into and mates with the throat of the container, a cylindrical cup which frictionally engages the end of the an

A tamper evident closure for a container generally having a cylindrical upstanding neck or throat, the neck having an external thread. The closure comprises an annular element which slides into and mates with the throat of the container, a cylindrical cup which frictionally engages the end of the annular element that extends into the container, the bottom of the cup constituting a flat disc having frangible lines which begin at the outer edge of the disc and wind spirally to the center of the disc ending in a pull tab which extends upwardly in the cup, and a clear cap the internal threads of which mate with the external threads of the neck. The annular element is made of rigid plastic material that is suitable for ultrasonic welding to the throat to create an integrity of the throat and closure. The cup is made of a softer deformable material such that when the pull tab is pulled to open the closure the unwound portion will be so deformed that it cannot be replaced in its original condition.

대표청구항 ▼

A tamper evident/tamper resistant seal closure for a container, having a generally cylindrical open throat, comprising: an annular element bonded to the throat of the container, the annular element including a consistent internal diameter, and an outer diameter that is varied to form firstly a lip f

A tamper evident/tamper resistant seal closure for a container, having a generally cylindrical open throat, comprising: an annular element bonded to the throat of the container, the annular element including a consistent internal diameter, and an outer diameter that is varied to form firstly a lip for mating with the rim of the container throat, secondly a section which has an outer diameter only slightly smaller than the internal diameter of the container throat, and thirdly a section of reduced outer diameter; and an inverted cap comprised of an upwardly extending cylindrical portion sized to fit tightly over the third section of the annular element, and a flattened bottom, including frangible seal means therein.