Sealing closure cap

Details Sealing closure cap Sealing closure cap

1994-12-28

1995-10-24

Garbe, Stephen P.

Bottles and jars

Closures

With pressure-responsive seal

215320, 215329, 215341, 215354, B65D 5300

Patent

active

054602831

ABSTRACT:
A polyethylene cap, for use with containers, particularly polypropylene containers for containing medical specimens in preservative fluid such as formaldehyde, is provided with a 3-face seal, wherein a rim portion of the container is trapped in sealing, contacting relation on three mutually adjoining faces, whereby any tendency of the container rim to "relax" out of sealing engagement with a contacting face portion of the cap is effectively precluded by the fit and the geometry of the cap seal. In the case of polypropylene, which is susceptible to such "relaxation", the subject cap enables the effective sealing of polypropylene containers so that advantage may be taken of the superior properties of polypropylene in non-reactive, secure containment of possibly contaminated medical specimens in liquids such as formaldehyde, a known carcinogen.

REFERENCES:
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patent: 3209934 (1965-10-01), Salminen
patent: 3297184 (1967-01-01), Andelin
patent: 3298415 (1967-01-01), Klygis
patent: 3330433 (1967-07-01), Salminen
patent: 3692208 (1972-09-01), Croyle et al.
patent: 4206852 (1980-06-01), Dunn et al.
patent: 4341320 (1982-07-01), Libit
patent: 4771905 (1988-09-01), Perne et al.
patent: 4844961 (1989-07-01), Akao

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