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US 6,149,032 AGranted
Electro-mechanical piston meter
AssigneeTokheim Corporation
InventorGary L. Seitz
Life of this patent
Estimating the term…
Abstract
An electromechanical piston meter for volumetrically measuring the quantity of fluid displaced. In one particular embodiment, inlet and outlet valving permits the electromechanical piston meter to vary the flow of fluid through the piston meter. When the electromechanical piston meter with inlet and outlet valving is disposed within a fuel dispenser, infinently variable blending is achieved without a separate meter and blend valve.
Claims9
A piston meter, comprising:
- a cylinder, said cylinder having an inlet and an outlet;
- a piston reciprocatable within said cylinder;
- piston sensor for detecting one of location and placement of said piston within said cylinder, said piston sensor detects varying current flow;
- and
- volumetric computational means for returning a volume signal as a function of said piston reciprocation within said cylinder.
2 more elements
A dispenser for supplying blended fluid, comprising:
- at least one fluid supply line;
- and
- a piston meter, comprising:
- a cylinder, said cylinder having an inlet and an outlet, said inlet in fluid communication with said at least one fluid supply line;
- a piston reciprocatable within said cylinder;
- piston sensor for detecting one of location and placement of said piston within said cylinder said piston sensor detects varying current;
- and
- volumetric computational means for returning a volume signal as a function of strokes said piston reciprocates within said cylinder.
5 more elements
A method of volumetrically metering fluid to be dispensed, comprising the steps:
- supplying fluid to a piston meter having a reciprocatable piston within a cylinder;
- determining the location of the piston within the cylinder using an electronic sensor to detect piston movement and placement;
- and
- calculating volume of fluid supplied as a function of the piston reciprocation, said electric sensor comprises detecting of one of varying current and inductance.
1 more element
Dependencies are inferred from the claim text.