Frangible cap for bottles
Patent 4066180 Issued on January 3, 1978. Estimated Expiration Date: 
January 3, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 3, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1477139 2808168 2934232 3326401 3866783 InventorApplicationNo. 05/748747 filed on 12/09/1976US Classes:215/254, Tear strip215/317Resilient distortion of closure skirt holds it in closed positionExaminersPrimary: Norton, Donald F.Attorney, Agent or FirmAbstractA frangible sealing cap for a bottle neck comprises:A. a plastic cup having a top cover and a depending annular skirt, the cover and skirt having thin walls, the skirt being free of annularly outward bulge structure,B. a plastic pull tab integral with the skirt and depending to a level below the lowermost level of the skirt, andC. there being two weakening score lines extending into, but incompletely through the skirt from the outer surface thereof, said lines extending upwardly toward the top cover from points proximate the junctures of the skirt with opposite edges of the tab.Field of SearchAbout line or point of weaknessTear strip Line of weakness extends circumferentially of receptacle mouth opening Resilient distortion of closure skirt holds it in closed position Specifically designed to accommodate plural sizes Closure and receptacle having preformed, coacting configurations | |
