초록 ▼

A closure-opening device for a 360°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

A closure-opening device for a 360°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°angle and the base portion has a relatively blunt included-angle point of approximately 120°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.

대표청구항 ▼

A closure-opening device for a container having side wall configuration and a closed bottom as well as a top capable of being opened for access to contents thereof including, for example, liquid, lard, shortening, shelled peanuts, granular or freeze dried or instant coffee, bread crumbs, powdered mi

A closure-opening device for a container having side wall configuration and a closed bottom as well as a top capable of being opened for access to contents thereof including, for example, liquid, lard, shortening, shelled peanuts, granular or freeze dried or instant coffee, bread crumbs, powdered milk, salt, and other granular, coarse, as well as flake particles used by consumers, comprising: a molded plastic closure member having a rim portion and a substantially flat surface panel portion; a molded-in thinned-area portion including a circumferential score-line between the rim portion and the panel portion; a raised surface, upwardly extending arrow-shaped tab element located substantially radially in the panel portion and also having a tab score around periphery of said tab element though terminating at opposite ends of the tab score at a pair of locations spaced inwardly a short distance from the circumferential score line on either side of said tab element; a first included-angle point provided with said tab element and positioned radially inwardly toward a center location of the panel portion; a further included-angle point provided with said tab element and positioned radially outwardly in a termination thereof closely adjacent, though spaced a short distance radially inwardly of the rim portion and circumferential score line; and means for grasping said tab element after initial rupture by stress concentration of pressure applied to depress said tab element at said first included-angle point for easy initial rupture as well as for lifting said tab element upwardly from said panel portion for rupture of the circumferential score-line, the first included-angle point being defined in a sharper angle for stress concentration than a more blunt angle provided with the further included-angle point.