| 摘要 |
A closure-opening device for a 360 DEG peripherally-scored lid closure member including an "arrow-tab" element having a base portion, middle portion and a head portion. A tab-score extends around the "arrow-tab" element and terminates at opposite ends of the tab score at opposite locations adjacent to an underside of the base portion. The head portion has a sharp included-angle point of approximately 60 DEG angle and the base portion has a relatively blunt included-angle point of approximately 120 DEG angle. Reinforcement droplet portions are located in a spaced pair at opposite ends of the tab score. Fingernail engagement projections extend laterally outward from the sharp angle head portion of the tab element. The middle portion has finger-graspable arcuate-shaped recesses on opposite side walls thereof. The "arrow-tab" element projects upwardly and a stress concentrated for initial rupture of the tab score is provided at the sharp included-angle point while the reinforcement droplet portions preclude any complete separation of the tab element from ever occurring as to the lid closure member. A further raised-surface, upwardly-extending arrow-shaped tab element is provided in a location substantially diametrically opposite to the tab element located substantially radially in the panel portion; the further tab element has an enlarged elliptical base and a further tab score extending completely around the periphery of the further tab element completely removable from the panel portion to have a pour-spout opening surrounded by a pour-spout lip crescent-shaped like a "C" in a location intermediate the peripheral rim and the pour-spout opening.
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