Vacuum relief device
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United States of America Patent
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May 27, 2008
Issued Date -
N/A
app pub date -
Nov 9, 2004
filing date -
Apr 16, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Liquid soap dispensers including a vacuum relief valve which comprises an enclosed chamber having an air inlet open to the atmosphere and a liquid inlet in communication with liquid in the reservoir and in which the liquid inlet opens to the chamber at a height below a height at which the air inlet opens to the chamber. The vacuum relief valve permits relief of vacuum from the reservoir without moving parts or valves.
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