Sealed, non-permeable fuel tank for spark-ignition motors
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United States of America Patent
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Aug 26, 2014
Grant Date -
Apr 26, 2012
app pub date -
Sep 30, 2011
filing date -
Oct 26, 2010
priority date (Note) -
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Abstract
A fuel tank for a spark-ignition motor with a vapor intake port has a tank body having a tank wall enclosing a tank volume. A filler port in a first upper portion of the tank wall establishes a liquid fill-level limit for the tank volume. A vapor dome formed by a second upper portion of the tank wall subtends a vapor space above the liquid fill-level limit. A vapor vent valve is mounted in the vapor dome and is connectable to the vapor intake port. The vapor dome has a shape and size allowing the tank body to tilt from about a horizontal position to about thirty degrees in any direction from the horizontal position before a liquid filling the tank volume to the liquid fill-level limit contacts the vapor vent valve.
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