Fuel dispenser controlled in dependence on an electrical signal from a gas detector of the dispenser
AssigneeGilbarco Inc.
InventorsJohn E. Saxton, Michael L. Jennings, Jack F. Bartlett, James R. Dormer, Peter D. G. Massingberd-Mundy
Life of this patent
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Abstract
This invention relates to an improved fuel dispenser comprising a gas detector responsive to the presence of gas within the fuel. The gas detector provides an electrical signal indicative of the presence or absence of gas to a computer which controls a valve, and thus the dispensing of fuel in dependence upon the signal received from the gas detector.
Claims33
A fuel dispenser comprising:
- a gas detector for producing an electrical signal in dependence upon the presence of gas in fuel flowing through the chambers separated by a movable member, said first closed chamber having an inlet and an outlet, said second chamber being connected to said outlet by a passage, whereby fuel passing through said inlet and said outlet produces a reduction in pressure in said first chamber by the Venturi effect;
- and
- processing means for receiving the electrical signal and controlling the dispensing of fuel at least in part in dependence upon the electrical signal received.
A gas detector for detecting the presence of gas in a fuel and providing an electrical signal output in dependence thereon, the detector comprising a first and a second closed chamber separated by a movable member, and an inlet and outlet in the first chamber of such dimensions and relative displacement that fuel passing through them produces a reduction in pressure in the first chamber by the Venturi effect, the second chamber being connected by a passage to the outlet.
A method of dispensing fuel comprising producing an electrical signal in dependence upon the presence of gas in fuel flowing through a gas detector, processing the electrical signal and controlling dispensing of fuel at least in part in dependence upon the electrical signal received.
Dependencies are inferred from the claim text.