Fluid pump and fuel dispenser
AssigneeDresser, Inc.
InventorsBengt I. Larsson, Marie Hakansson
Life of this patent
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Abstract
A fluid pump for a fuel dispensing unit comprises a pump housing with a first chamber and a second chamber, each chamber having a fluid inlet valve and a fluid outlet valve, respectively. The chambers are separated by a movable piston arranged to repeatedly decrease and increase the volumes of the chambers. The piston comprises a magnetic device, and electromagnetic control means are configured to move the piston by altering a magnetic field, for repeatedly decreasing and increasing the volume of the chambers.
Claims22
A fluid pump for a fuel dispensing unit, comprising a pump housing with a first chamber and a second chamber, each chamber having a fluid inlet valve and a fluid outlet valve, the chambers being separated by a movable piston arranged to repeatedly decrease and increase the volumes of the chambers, the piston comprising a magnetic device, wherein an electromagnetic controller is configured to move the piston by altering a magnetic field, for repeatedly-decreasing and increasing the volume of the chambers.
A fuel dispensing unit for refueling vehicles, comprising a first fuel pump for a fuel dispensing unit, comprising a pump housing with a first chamber and a second chamber, each chamber having a fluid inlet valve and a fluid outlet valve, the chambers being separated by a movable piston arranged to repeatedly decrease and increase the volumes of the chambers, the piston comprising a magnetic device, wherein a fuel dispensing nozzle is connected to at least one of the two chambers via a fuel flow line, for transporting fuel.
Dependencies are inferred from the claim text.