Sequential delivery valve apparatus and methods
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United States of America Patent
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Aug 12, 2014
Grant Date -
Aug 29, 2013
app pub date -
Feb 29, 2012
filing date -
Feb 29, 2012
priority date (Note) -
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Abstract
A sequential delivery valve provides sequential delivery of gas propellant and liquid product from a container to a dispensing head for ejecting an atomized spray from the dispensing head. When the dispensing head is depressed, a pusher in the valve passes from a closed position wherein no liquid and no gas is allowed to travel through the valve to a partially open position where only gas is allowed to travel through the valve and eventually to a fully open position wherein both gas and liquid are allowed to travel through the valve into the dispensing head. When the dispensing head is released, the pusher passes from the fully open position back to a partially open position allowing only gas to travel through the valve and eventually to the closed position wherein no gas and no liquid are allowed to travel through the valve into the dispensing head.
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