Container having slit valve

Details Container having slit valve Container having slit valve

1998-06-22

1999-04-27

Shaver, Kevin P.

Dispensing

Resilient wall

With flow controllers or closures

222490, 222494, 222546, B67D 3700

Patent

active

058970339

ABSTRACT:
A container has a valve (2) and a lid (3) which covers the valve (2) from the outside. The valve (3) includes a slit (23) which opens due to outward deformation of the valve (3) when the internal pressure of the body (1) is higher than atmospheric pressure, and which closes due to elasticity of the valve (3) when the internal pressure is approximately equal to atmospheric pressure. The container of the present invention further comprises a pushing structure (4) formed on the inside of the lid (3), this pushing structure (4) being shaped so as to come into contact with the valve (2) when the lid (3) is shut, thereby pushing the valve (2) slightly inwards to open the slit (23).

REFERENCES:
patent: 4749108 (1988-06-01), Dornsbusch et al.
patent: 5271531 (1993-12-01), Rohr et al.
patent: 5390805 (1995-02-01), Bilani et al.
patent: 5632420 (1997-05-01), Lohrman et al.
patent: 5743443 (1998-04-01), Hins
patent: 5769253 (1998-06-01), Gross
patent: 5788108 (1998-08-01), Rohr

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