Dispensing valve with trampoline-like construction
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United States of America Patent
Stats
-
Feb 12, 1991
Issued Date -
N/A
app pub date -
Jan 9, 1990
filing date -
Apr 25, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A self-sealing valve is provided for fluid dispensing packages and the like, of the type which are compressed and decompressed to dispense therefrom liquids, pastes, powders and other similar flowable materials. The valve has a marginal groove extending along one face thereof in a closed pattern to define a central area inside the groove, and an outer area outside the groove. Ribs extend between the center and outer areas of the valve to bridge the groove, and selectively support the center valve area in a trampoline-like fashion. A slit extends through the center valve area, and into at least a portion of the groove to form an orifice that shifts between outwardly open, closed, and inwardly open positions in response to compressing and decompressing the container.
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