Importance

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Abstract

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 reentering the bag. The valve assembly comprises: a valve base comprising an opening, a seat disposed along a periphery of the opening, a flange surrounding the seat, and first and second pivot supports; a flapper comprising a diaphragm that is deformable and overlies the opening; and a cap pivotably supported by the first and second pivot supports for pivoting between first and second angular positions, the cap comprising at least one vent hole. The cap maintains the diaphragm in contact with the seat along an entire perimeter of the seat when the cap is in the first angular position and does not maintain the diaphragm in contact with the seat along its entire perimeter when the cap is in the second angular position.

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First Claim