Patent ID: 6810900
Filing Date: 2004-11-02
Classification: B60K,F16K,Y10T

Abstract:
A composite type air vent valve situated between a canister and a fuel tank, comprising:a check valve having a first tank side port and a first atmosphere side port for opening and closing a connection between the first tank side port and the first atmosphere side port according to an inner pressure of the fuel tank; a cut valve having a second tank side port and a second atmosphere side port, said cut valve generally opening a connection between the second tank side port and the second atmosphere side port to discharge vapor in the fuel tank and closing the connection between the second tank side port and the second atmosphere side port according to a fuel liquid level in the fuel tank; and a case member attachable on an outer surface of the fuel tank, said case member comprising: an atmosphere side connecting portion to be connected to the canister and communicating with the first atmosphere side port of the check valve; a communicating path for communicating the first tank side port of the check valve with the second atmosphere side port of the cut valve; a tank side connecting portion to be connected to another cut valve and communicating with the communicating paths; a check valve-attaching portion communicating with the atmosphere side connecting portion for retaining the check valve therein; and a cut valve-attaching portion disposed under the check valve-attaching portion for retaining the cut valve therein.