B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
206/31
B65D 41/34 (2006.01)
Patent
CA 1150672
TITLE TAMPER PROOF MOLDED PLASTIC CLOSURE ABSTRACT OF THE INVENTION A tamper proof molded closure is provided for use on a threaded bottle neck having an external peripheral bead below the threaded portion of the bottle neck. The closure comprises a one piece molded cap having a circular panel portion and a depending annular skirt portion with the upper portion of the skirt defining internal threads and a lower band portion of the skirt defining an internal shoulder that is expandable to snap over the container bead during the assembly operation to lock the closure to the bottle neck. At a region intermediate the threaded portion and the interior shoulder, the external wall of the band portion of the closure is scored to form a slit extending peripherally around the entire closure. The depth of the slit extends through the wall of a closure at all points except for a limited number of peripherally spaced arcuate segments where the depth of the slit is less than that of the thickness of the skirt portion. This provides connecting bridges between the threaded portion and the band portion of the closure which are readily severable by rotational movement of the closure in a direction to unscrew it from the bottle neck. The slit height is limited to permit collapsing of the slit during the application of the closure to force the internal shoulder over the container bead.
368106
G. Ronald Bell & Associates
Owens-Illinois Inc.
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