Lid and seal for jar

Details Lid and seal for jar Lid and seal for jar

1982-01-19

1983-11-15

Norton, Donald F.

Bottles and jars

Closures

Cap type

215344, 215DIG1, B65D 5300

Patent

active

044150954

ABSTRACT:
A container with lid having a reusable sealing gasket integrally formed therein in which the gasket extends downwardly and outwardly from the lid into contact with the container rim. The gasket is geometrically shaped in the form of the frustrum of a right circular cone. In the present invention, turning of the lid a sufficient amount engages a lid-to-jar stop which mechanically stops further rotation at the point where the gasket has been grossly deformed a predetermined amount sufficient to obtain a high degree of seal. The gasket operates by having its lower edge wipe along and radially expand along the top surface of the container, the lower edge being placed under tension as the radial expansion occurs.

REFERENCES:
patent: 3242522 (1966-03-01), Jass et al.
patent: 3747792 (1973-07-01), Anthony
patent: 3857509 (1974-12-01), Baldwin et al.

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