Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
246 words
Valve devices for an aeration and air evacuation pipe of an aeration and air evacuation device arranged in an upper motor fuel tank part, said pipe leading away from the motor fuel tank, the valve device comprising: a housing formed of two housing parts between which a housing insert is clamped, the housing including a connecting duct and an aeration and air evacuation duct; an intermediate duct located between the connecting duct and the aeration and air evacuation duct, the intermediate duct having a downwardly extending duct section leading from the housing insert and a laterally and diagonally extending section which projects downwardly from the downwardly extending section; a negative pressure valve which opens in the case of negative pressure in the tank, the negative pressure valve being located between the connecting duct and the aeration and air evacuation duct; and a positive pressure valve which opens in the case of positive pressure in the tank, the positive pressure valve being located between the connecting duct and the aeration and air evacuation duct and having a valve element guided raisably and resting on a valve seat by the effect of gravity, the valve seat being formed by a downward sloping bevelled end face of the downwardly and laterally extending section of the intermediate duct, and the valve element being a weight component which rests upon the bevelled end face of the downwardly and laterally extending section of the intermediate duct exclusively by the effect of gravity.
Claim 2
Dependent Claim
246 words
Valve devices for an aeration and air evacuation pipe of an aeration and air evacuation device arranged in an upper motor fuel tank part, said pipe leading away from the motor fuel tank, the valve device comprising: a housing formed of two housing parts between which a housing insert is clamped, the housing including a connecting duct and an aeration and air evacuation duct; an intermediate duct located between the connecting duct and the aeration and air evacuation duct, the intermediate duct having a downwardly extending duct section leading from the housing insert and a laterally and diagonally extending section which projects downwardly from the downwardly extending section; a negative pressure valve which opens in the case of negative pressure in the tank, the negative pressure valve being located between the connecting duct and the aeration and air evacuation duct; and a positive pressure valve which opens in the case of positive pressure in the tank, the positive pressure valve being located between the connecting duct and the aeration and air evacuation duct and having a valve element guided raisably and resting on a valve seat by the effect of gravity, the valve seat being formed by a downward sloping bevelled end face of the downwardly and laterally extending section of the intermediate duct, and the valve element being a weight component which rests upon the bevelled end face of the downwardly and laterally extending section of the intermediate duct exclusively by the effect of gravity.
Claim 3
Dependent Claim
39 words
Valve device according to claim 1, wherein the weight component is pivotable into its open position about a pivot axis staggered laterally to and arranged higher than the valve seat in a normal upright position of the fuel tank.
Claim 4
Dependent Claim
28 words
Valve device according to claim 1, wherein the weight component is articulated to a substantially vertically oriented portion of the downwardly extending duct section of the intermediate duct.
Claim 5
Dependent Claim
28 words
Valve device according to claim 2, wherein the weight component is articulated to a substantially vertically oriented portion of the downwardly extending duct section of the intermediate duct.
Claim 6
Dependent Claim
22 words
Valve device according to claim 3, wherein the housing insert is penetrated by at least one aperture of the negative pressure valve.
Claim 7
Dependent Claim
22 words
Valve device according to claim 4, wherein the housing insert is penetrated by at least one aperture of the negative pressure valve.