Receptacles – Closures – Removable closure guided in rotary movement
Patent
1987-02-09
1987-12-08
Hall, George T.
Receptacles
Closures
Removable closure guided in rotary movement
215329, 215344, 215DIG1, B65D 4104
Patent
active
047113650
ABSTRACT:
A container and closure assembly having a unique sealing surface to provide a reliable airtight seal. A generally cylindrical container having sidewalls and a base cooperably engages with a closure member by threading means. As the closure member is twisted to engage the threads of the container, an annular face of the container rim engages a complementarily configured annular recess in the closure member. Situated within the annular recess are disposed an array of interspaced, projecting rib members. As the flexible rib members are depressed against the annular face of the container rim, the ribs compress and fold over to create an effective airtight seal. A secondary seal is provided by an inner bevel forming part of the interior surface of the annular recess and a beveled surface of the annular rim of the container. The inner bevel facing and beveled surface of the container cooperably meet to form the additional airtight seal. The radial edge of the closure member forms a closure support collar which cooperates during sealing to engage a complementarily configured annular container support seat. Forces applied to the closure member are thereby transmitted to the sidewalls of the container, to permit a reliable seal during stacking or misuse.
REFERENCES:
patent: 2652283 (1953-09-01), Roop
patent: 2741402 (1956-04-01), Sayre
patent: 3125237 (1964-03-01), Kitterman
patent: 3140007 (1964-07-01), Nettleship
patent: 3881627 (1975-05-01), Davolt
patent: 3935968 (1976-02-01), Rausing
patent: 4089463 (1978-05-01), Babiol
patent: 4090631 (1978-05-01), Grussen
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