Vented vacuum tube and stopper

Details Vented vacuum tube and stopper Vented vacuum tube and stopper

1979-03-09

1980-03-11

Norton, Donald F.

Bottles and jars

Closures

Receptacle interior communicable with exterior with closure...

215 31, B65D 5116

Patent

active

041924290

ABSTRACT:
The disclosure is of an improved vacuum tube having one or more vents around the mouth to allow evacuation, prior to closure assembly, which tube eliminates the necessity of using a vented stopper and avoids the problems inherent in such vented stopper.

REFERENCES:
patent: 759889 (1904-05-01), Howells
patent: 1819279 (1931-08-01), Coyle
patent: 2649245 (1953-08-01), Silverstolpe
patent: 2813651 (1957-11-01), Schlumbohm

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