Fuel system inlet check valve with flame arresting feature
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United States of America Patent
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Nov 5, 2013
Grant Date -
Nov 29, 2012
app pub date -
May 27, 2011
filing date -
May 27, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
An inlet check valve assembly with flame arresting feature. An internal flame arresting feature utilizes a flame arrester body attached to a valve member which protrudes into the valve throat. An external flame arresting feature utilizes a hood concentrically disposed relative to the valve member. The flame arresting feature is configured relative to movement of the valve member with respect to the throat such that fluidic communication between the fuel fill pipe and the fuel tank is limited to less than the minimum flame propagation distance of the fuel and air mixture in which a combustible mixture may exist in the fuel fill pipe, whereby any flame front in the fuel fill pipe will quench thereat before reaching the fuel tank.
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