Vacuum released valve

Details Vacuum released valve Vacuum released valve

2006-01-20

2010-10-19

Shaver, Kevin P (Department: 3754)

Dispensing

With casing or support

For bottom discharge dispenser supported on horizontal surface

C222S188000

Reexamination Certificate

active

07815076

ABSTRACT:
These disadvantages of previously known devices, the present invention provides a vacuum released valve which closes an opening into a reservoir to passage therethrough until a sufficient vacuum is created with the reservoir as on initial dispensing of fluid from the reservoir. Furthermore a cap is preferably adapted to assume an inherent shape. The inherent shape is a shape such that when in the closed position; the cap will have an inherent bias to urge the female annular seat downwardly onto the male seat to form a seal and when deflected under vacuum conditions, to assume the open position; the inherent bias of the cap, on release of the vacuum, will cause the cap to reassume the position.

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