Fluid flow system and method with low flow inhibiting
AssigneeDresser Equipment Group, Inc.
InventorKen W. Taylor
Life of this patent
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Abstract
The present invention provides a fluid flow system and method according to which the fluid is pumped from a source through a conduit while the flow rate of the fluid is sensed and terminated in response to the fluid flow rate falling below a predetermined minimum. After a predetermined time delay the valve is re-opened to allow flow to resume.
Claims11
A fluid dispensing system comprising a source of fluid, a nozzle for manually dispensing the fluid, a conduit connected between the source and the nozzle a pump for pumping the fluid from the source through the conduit, and to the nozzle for dispensing, a meter in the conduit for measuring the flow rate of the fluid flowing through the conduit a valve disposed in the conduit and movable between an open position in which it permits the flow of the fluid through the conduit for dispensing by the nozzle, and a closed position in which it prevents the flow of the fluid through the conduit;
- and a control unit for receiving input signals from the meter corresponding to the flow rate of the fluid, for closing the value in response to the flow rate falling below a predetermined minimum, and for opening the valve after a predetermined time delay.
A fluid flow method comprising the steps of pumping the fluid from a source through a conduit, measuring the flow rate of the fluid in the conduit, terminating the fluid flow in response to the fluid flow rate falling below a predetermined minimum, responding to a predetermined time delay after the step of terminating and commencing the fluid flow.
Dependencies are inferred from the claim text.