Flow indicator for showing blocking of filter cotton
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United States of America Patent
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Feb 1, 2011
Grant Date -
Aug 20, 2009
app pub date -
Feb 18, 2008
filing date -
Feb 18, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A flow indicator for showing blocking of filter cotton, being installed in a pipe line of a spraying head for the purpose of showing and controlling blocking of filter cotton in a filter in connecting with a submerged pump for the spraying head, it has a tri-branch tube to connect the pipe line, and to connect to a housing provided therein with an electric power source, an indicating device, an igniting switch and a triggering device, the tri-branch tube is provided therein with a pusher rod that can detect the pressure of water and can thus be moved. When the filter cotton is blocked to lower the water pressure, the pusher rod is moved and makes the triggering device to turn on the indicating lamp device, in order to warn a user to clean or change the filter cotton of the filter.
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