Self-adjusting re-sealable spring center seal closure

Details Self-adjusting re-sealable spring center seal closure Self-adjusting re-sealable spring center seal closure

2005-11-01

2005-11-01

Ngo, Lien M. (Department: 3727)

Receptacles

Closures

With closure opening arrangements for means

C220S790000

Reexamination Certificate

active

06959829

ABSTRACT:
A leak-resistant plastic container and closure are disclosed, where the container has an open end, an inner periphery, an outer periphery, and a container flange extending around the inner periphery at the open end. The closure has a generally planar and circular inner lid, a spring extending around an outer circumference of the inner lid, an arcuate flange receptacle extending around an outer circumference of the closure at a circumference outside the spring, where the flange receptacle has an inner surface and an outer surface, a secondary sealing bead, positioned on the inner surface of the flange receptacle, and a primary sealing bead, positioned on an outer surface of the flange receptacle and opposite the secondary sealing bead, where the spring exerts a sealing pressure against the container flange when the closure is placed on the open end of the container.

REFERENCES:
patent: 3840144 (1974-10-01), Dry
patent: 3853237 (1974-12-01), Marchant
patent: 3934745 (1976-01-01), Lovell
patent: 3977563 (1976-08-01), Holt
patent: 4380304 (1983-04-01), Anderson
patent: 4380305 (1983-04-01), Von Holdt
patent: 4408698 (1983-10-01), Ballester
patent: 4625876 (1986-12-01), Bullock, III
patent: 4933133 (1990-06-01), Brown et al.
patent: 5050754 (1991-09-01), Marino
patent: 5373955 (1994-12-01), Marino
patent: 5460287 (1995-10-01), Cargile et al.

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