Dispensing closure for a squeezable container

Details Dispensing closure for a squeezable container Dispensing closure for a squeezable container

1978-09-11

1980-05-20

Scherbel, David A.

Dispensing

Outlet element operated by pressure of contents

Reciprocable, nonpivoted

222501, 222549, 251 82, B67D 300, B65D 8314

Patent

active

042035368

ABSTRACT:
A housing containing annular tapered valve seat and mating valve secure the valve in fluid communication with the container interior. Fluid in the container under pressure displaces the valve from its seat, flows through the interface between the valve and seat and is discharged to the ambient through a fluid passage coupled to the interface. A shoulder in the housing engages a shoulder on the valve for limiting the displacement of the valve to a value sufficiently small to retain fluid in the interface in the absence of pressure above ambient in the container. The fluid in the interface acts effectively as a seal to ambient air so that a negative pressure in the container results in ambient air pressure forcing the valve to its closed position.

REFERENCES:
patent: 963836 (1910-07-01), Varlie
patent: 1721666 (1929-07-01), Lee
patent: 3165242 (1965-01-01), Jackson
patent: 3490658 (1970-11-01), Schwartzman
patent: 3817284 (1974-06-01), Daugherty
patent: 3887116 (1975-06-01), Ishikawa et al.

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