Fuel vent assembly with floatless rollover protection
View Patent ↗A valve for use between a vehicle fuel tank vent and a vapor recovery canister in a vehicle fuel tank containing liquid fuel, such a valve comprises: a housing having a fuel tank side and a vapor recovery canister side; and a vapor permeable membrane fixed to the housing to block the passage of liquid fuel.
1. A valve for use between a vehicle fuel tank vent and a vapor recovery canister in a vehicle fuel tank containing liquid fuel, said valve comprising:
a housing having a fuel tank side and a vapor recovery canister side; and
a pleated, vapor permeable membrane fixed to said vapor recovery canister side to block passage of liquid fuel.
2. A valve for use between a vehicle fuel tank vent and a vapor recovery canister in a vehicle fuel tank containing liquid fuel, said valve comprising:
a housing having a fuel tank side and a vapor recovery canister side; and
a cone shaped, vapor permeable membrane fixed to said vapor recovery canister side to block passage of liquid fuel.
3. A valve for use between a vehicle fuel tank vent and a vapor recovery canister in a vehicle fuel tank containing liquid fuel, said valve comprising:
a housing having a fuel tank side and a vapor recovery canister side; and
a cylindrical, vapor permeable membrane fixed to said vapor recovery canister side to block passage of liquid fuel.
4. The valve of claim 2 , where said cone shaped vapor permeable membrane has a narrow portion and a wide portion.
5. The valve of claim 4 , where said cone shaped vapor permeable membrane is positioned inside said housing with said narrow portion oriented toward said fuel tank side.
6. The valve of claim 1 , where said vapor permeable membrane is cone shaped.
7. The valve of claim 3 , where said vapor permeable membrane is pleated.
8. The valve of claim 1 , where said vapor permeable membrane is a double layer material.
9. The valve of claim 1 , where said vapor permeable membrane is an acrylic copolymer material on a polyamide support.
10. The valve of claim 1 , where said vapor permeable membrane has pore sizes of 0.2 to 5.0 microns.
11 .The valve of claim 1 , where said vapor permeable membrane has pore sizes of 0.45 to 0.80 microns.
12. The valve of claim 2 wherein said vapor permeable membrane is a double layer material.
13. The valve of claim 3 wherein said vapor permeable membrane is a double layer material.
14. The valve of claim 2 wherein said vapor permeable membrane is an acrylic copolymer material on a polyamide support.
15. The valve of claim 3 wherein said vapor permeable membrane is an acrylic copolymer material on a polyamide support.