Leakproof one-way valve for use with vacuum attachment

A one-way valve allows air to be drawn from a collapsible, flexible, airtight bag using a vacuum source. When the vacuum source is removed, the one-way valve prevents air from re-entering the bag. The valve assembly comprises a base, a valve element supported by the base, and a cap fitted onto an en...

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Bibliographische Detailangaben
1. Verfasser:	KOBETSKY, ROBERT G
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR ACTUATING-FLOATS BLASTING COCKS CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HANDLING THIN OR FILAMENTARY MATERIAL HEATING LIGHTING MECHANICAL ENGINEERING PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING TAPS THERMAL INSULATION IN GENERAL TRANSPORTING VALVES WEAPONS
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Beschreibung
Zusammenfassung:	A one-way valve allows air to be drawn from a collapsible, flexible, airtight bag using a vacuum source. When the vacuum source is removed, the one-way valve prevents air from re-entering the bag. The valve assembly comprises a base, a valve element supported by the base, and a cap fitted onto an end of the base that is disposed in the exterior of the bag. The base comprises a flange that is disposed in the interior of the bag and is joined to a peripheral area surrounding a hole in one wall of the bag. One surface of the flange has a series of concentric heat-concentrating circular bead for speeding up the conduction heat sealing operation by which the valve assembly is attached to the bag. The valve cap is provided with a circular wall that presses the diaphragm of the valve element against a circular bead on an annular seat formed on the base for supporting the valve element.