Fuel vapor storage canister
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United States of America Patent
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Jun 14, 1988
Grant Date -
N/A
app pub date -
Jul 31, 1987
filing date -
Jul 31, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved vapor storage canister includes a single fill purge tube that extends down through the bed, nearly to the bottom of a reservoir in the center of a cone shaped shell enclosing the bottom of the canister. Liquids entering the canister are consolidated and collected at the bottom, and drawn out first during purge, to protect the bed from contamination. The working of the absorbent bed is more efficient, since the vapors concentrate toward the bottom, where the purge point is, and since purge air is drawn in through the same pattern in which vapors were initially absorbed during fill.
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