Horizontal shaft fuel tank cap with charcoal canister
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United States of America Patent
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Nov 7, 2017
Issued Date -
N/A
app pub date -
Mar 30, 2015
filing date -
Feb 13, 2015
priority date (Note) -
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Abstract
The horizontal shaft fuel tank cap with charcoal canister includes a fuel tank inner cap and fuel tank outer cap. A hollow room with an upper opening is disposed in the center of the fuel tank inner cap. The fuel tank outer cap is disposed above the fuel tank inner cap. The ventilating pipe is disposed in the hollow room and divides the hollow room into filling room and containing room. The first air outlet leading the fuel vapor to the containing room is disposed on the bottom of the containing room. The second air outlets are disposed in the center of the ventilating pipe. The fuel-absorption substrate is disposed in the filling room. The residuary fuel is drained into the fuel tank under negative pressure of the fuel tank. The filtering performance of charcoal powder can be enhanced since it is exempted from long-time fuel soaking.
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