Bottles and jars – Closures – Receptacle interior communicable with exterior with closure...
Patent
1997-04-16
1999-04-13
Cronin, Stephen K.
Bottles and jars
Closures
Receptacle interior communicable with exterior with closure...
215320, 215355, 215DIG3, B65D 5116
Patent
active
058934766
ABSTRACT:
A closure for sealing a sample tube and a method for establishing vacuum conditions within the tube while the closure is loosely positioned on the tube are provided. The closure comprises: (a) an inner stopper portion for insertion into the tube; and (b) an outer skirt portion for enclosing the tube, the skirt portion including at least two radially inwardly directed extensions for loosely positioning the closure on the tube, the extensions defining at least two passageways therebetween for exchanging gases between the interior of the tube and the surrounding atmosphere when the extensions are positioned on the tube. Preferably, the inner stopper portion and the outer skirt portion are integrally made. The method comprises: (a) loosely positioning a closure on a tube, the closure including an inner stopper portion and an outer skirt portion, the outer skirt portion including at least two radially inwardly directed extensions, the extensions being positioned on the tube; (b) exchanging gases between the interior of the tube and the surrounding atmosphere through passageways formed between the extensions of the skirt portion; and (c) tightly securing the closure to the tube so as to seal the tube.
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Cronin Stephen K.
Estar Technologies Ltd.
Friedman Mark M.
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