Fuel tank venting

Details Fuel tank venting Fuel tank venting

1986-06-23

1987-11-17

Chambers, A. Michael

Fluid handling

Systems

System with plural openings, one a gas vent or access opening

137589, 141 52, 141 59, 141302, B65B 3100, F16K 2400

Patent

active

047067080

ABSTRACT:
A fuel tank filler neck has a plate that pivots between a position restricting the filler neck and a position permitting introduction of fuel through the filler neck. A vent housing secured on the filler neck has a vapor inlet fitting and a vapor outlet fitting connected through a vent orifice, a pressure relief orifice, and a vacuum relief orifice. A diaphragm vent valve controls flow through the vent orifice. An actuating arm pivoted with the restrictor plate engages the vent valve across the vent orifice when the restrictor plate restricts the filler neck, and permits the vent valve to allow vapor flow from the vapor inlet fitting through the vent orifice to the vapor outlet fitting when the restrictor plate permits introduction of fuel through the filler neck. A diaphragm valve controls flow through the pressure relief orifice, and an umbrella valve controls flow through the vacuum relief orifice.

REFERENCES:
patent: 3662794 (1972-05-01), Turner
patent: 4630749 (1986-12-01), Armstrong et al.

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