Fuel tank cap capable of capturing harmful vapors
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United States of America Patent
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Aug 22, 2017
Issued Date -
N/A
app pub date -
Apr 25, 2016
filing date -
Nov 11, 2015
priority date (Note) -
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Abstract
A fuel tank cap includes a casing; a main chamber disposed in the casing; a vapor vent channel disposed in the casing and communicating with the main chamber; annular partition walls disposed in the main chamber and configured to divide the main chamber into troughs, each partition wall including a cut so that the troughs are capable of communicating with each other via the cut; and activated carbon filled in the troughs. The vapor vent channel includes the cuts and the troughs. The activated carbon captures fuel vapors and absorbs VOCs in the fuel vapors when the fuel vapors pass through the vapor vent channel. The invention eliminates the low efficiency problem of capturing the harmful VOCs of the fuel vapors by the conventional activated carbon canister.
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