Foldable locking lid for a container
Patent 5676306 Issued on October 14, 1997. Estimated Expiration Date: 
September 13, 2015. 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.
September 13, 2015. 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 ReferencesInventorsAssigneeApplicationNo. 527450 filed on 09/13/1995US Classes:229/404, Including closure229/5.5, End structure229/138, Extensions of adjacent box walls hingedly attached together229/906.1CUP LID WITH MEANS FOR FORMING A DRINKING OPENINGExaminersPrimary: Elkins, Gary E.Attorney, Agent or FirmForeign Patent References
International ClassB65D 003/10Foreign Application Priority Data1995-03-03 CAAbstractA closure for a container such as a paper cup. The container has an extended upper border having a series of crease lines extending downwardly from an upper edge, which when folded inwardly form a series of rectangles, each having a diagonal corner portion to form a closure panel. The panels may be displaced inwardly of the border in a mutually overlapping relation to close the container. By selecting a fold-over angle greater than neutral, the panels will converge in a mutual reactive relation to converge and lock in an inclined closure cone. The crease lines incorporate an adjoining reinforcing band to fold over within the upper border to form a reinforced band therearound. The containers are stackable when in an unfolded or partially unfolded condition.Field of SearchCombined with drinking tube (e.g., straw)Including a polygonal bottom wall and a curved sidewall Octagonal Hexagonal Decoration or novelty feature Extensions of adjacent box walls hingedly attached together Including closure End structure CUP LID WITH MEANS FOR FORMING A DRINKING OPENING End closing By folding over end of tube Edge crimping or curling By relative rotation of work and tool about work axis End flap folding | |
