Patent ID: 6223765
Filing Date: 2001-05-01
Classification: B67D,F16K,Y10T

Abstract:
A fuel dispensing system having an underground tank for holding fuel, a column pipe extending from the tank, a pump for pumping fuel from the tank through the column pipe, a dispensing pipe for delivering the fuel to a dispenser, a power supply line connected with an electrical power source, and a power delivery line extending through the column pipe to deliver electrical power to the pump, wherein the improvement comprises:a fluid tight casing having a removable cover providing access to the interior of the casing when removed, said casing serving to confine fuel that leaks therein;a power head in said casing connected with the column pipe to receive fuel therefrom, said power head providing a flow path for directing the fuel toward said dispensing pipe;a check valve housing in said casing between said power head and dispensing pipe to direct fuel therebetween;a check valve for controlling flow from said flow path of the power head to the dispensing pipe;an enclosed junction box in said casing receiving said power delivery line;means in said casing for electrically connecting said delivery line in the junction box to said supply line in the power head in a manner to isolate all electrical lines from the fuel flowing in said casing;a discharge opening from said power head;an inlet opening to said check valve housing substantially aligned with said discharge opening;a releaseable coupling assembly including first and second coupling members connected respectively with the discharge opening and the inlet opening, said coupling members having mating ends which seal together in a coupled position to provide a sealed flow passage from the discharge opening to the inlet opening, said coupling assembly having a release position wherein said mating ends are separable to allow the power head to be extracted from the casing along with the column pipe and pump; andmeans for effecting the coupled and release positions by hand when the cover of the casing is removed.