Patent ID: 8485215
Filing Date: 2013-07-16
Classification: F16K,Y10T

Abstract:
1. A fuel tank equipped with a liquid tank venting system comprising: a chamber that is inside the fuel tank and that is equipped with a drainage device, the drainage device including at least one vent valve including a vent float, wherein the non-return valve is forced into a position for leaktight closure of the draining opening via the vent valve starting from a certain liquid level in the fuel tank, wherein the elastomeric part of the non-return valve is one of an umbrella valve or a duck bill valve, wherein the non-return valve is located on a perimeter of the draining opening in the chamber, wherein said non-return valve comprises at least one part that is deformable when a weight of liquid present in the chamber is applied thereon, such that when the at least one part is deformed, the draining opening is free, wherein the vent float of the vent valve is a closure float that moves as a function of the liquid level in the fuel tank and that acts directly or indirectly on the elastomeric part of the valve, wherein the non-return valve is an umbrella valve, and wherein the vent valve further includes