Patent ID: 6827098
Filing Date: 2004-12-07
Classification: F16K,Y10T

Abstract:
A fuel cut-off apparatus for a fuel tank, disposed in a passage for communicating inside of the fuel tank to outside thereof and shutting off the passage when the liquid level of fuel within the fuel tank rises, comprising:a case attached to a wall portion of the fuel tank and having a first passage and a second passage for communicating the inside of the fuel tank to the outside thereof; a first seal seat disposed in the first passage of the case; a first float valve body disposed in the case and closing the first seal seat in response to the liquid level of the fuel when the liquid level rises; a second seal seat disposed vertically above the first seal seat, in the second passage of the case; a second valve body disposed on one side of the second seal seat communicating to the outside of the second passage, resiliently urged upwards from below; and a second float disposed in the case, and regulating an upper end position of the second valve body to open the second valve seat in response to movement of the liquid level of fuel at least until the liquid level is higher than the liquid level at which the first float valve body closes the first seal seat, wherein the second valve body closes the second seal seat when the second float does not regulate the upper end position of the second valve body.