초록 ▼

Disclosed is a closure for a container, such as a blow molded jug having a neck surrounding an opening therein, the closure having a first annular portion and a second annular portion. The first annular portion in the closure has a wiper seal and a lip seal. The second annular portion exerts an upwa

Disclosed is a closure for a container, such as a blow molded jug having a neck surrounding an opening therein, the closure having a first annular portion and a second annular portion. The first annular portion in the closure has a wiper seal and a lip seal. The second annular portion exerts an upward pressure on the lip seal which causes improved sealing and leak-tight properties during shipping, handling, etc. The upward pressure also enhances the effectiveness of the wiper seal. The second annular portion may include an annular tear skirt having a pull tab for the removal thereof to facilitate removal of the closure from the container. The closure may also include a plug seal, and a lower annular portion extending from the second annular portion.

대표청구항 ▼

[ What is claimed is:] [1.] A container having a closure, the container having a central longitudinal axis and being of a type that has a neck area, a top opening, an annular top surface with a periphery and an inner edge, the inner edge defining the top opening, a top outer rim extending from the p

[ What is claimed is:] [1.] A container having a closure, the container having a central longitudinal axis and being of a type that has a neck area, a top opening, an annular top surface with a periphery and an inner edge, the inner edge defining the top opening, a top outer rim extending from the periphery of the annular top surface, a lip formed at a lower edge of the top outer rim, and a bottom outer rim extending from the neck area the closure comprising:(a) a top member which covers the opening, the top member having an inner surface and an outer surface;(b) a first annular portion extending downwardly from the top member, the first annular portion further comprising a lip seal which comes into sealing contact with the lip; and(c) a second annular portion extending downwardly from the first annular portion, the second annular portion being generally located at a greater radial distance from the longitudinal axis than the first annular portion, the second annular portion having a bottom foot which comes into pressurized contact with the bottom outer rim and a weakened portion between the lip seal and the foot which acts as a hinge, such that a vertical compressive force is exerted on the second annular portion forcing the lip seal into sealable contact with the lip and creating a bending moment at the point of contact between the lip and the lip seal which causes the first annular portion to rotate inward toward the top outer rim as the lip exerts a downwardly directed force on the lip seal.