Fluent material handling – with receiver or receiver coacting mea – Processes – Gas or variation of gaseous condition in receiver
Patent
1993-10-04
1995-05-23
Cusick, Ernest G.
Fluent material handling, with receiver or receiver coacting mea
Processes
Gas or variation of gaseous condition in receiver
141 45, 141 47, 141 59, 141290, B65B 3100
Patent
active
054172560
ABSTRACT:
A fuel dispensing system includes a main vapor recovery path and a vapor pump to provide a vacuum along the path. Dispensers for dispensing fuel from a storage tank each have a branch conduit having one end adapted to be coupled to a receiving tank, and another end opening into the main vapor path, to provide a branch vapor recovery path. A sensor provides a first electrical signal indicative of the flow of the fuel being delivered, and a vapor flow sensor in the branch conduit supplies a signal indicative of the actual vapor flow. An adjustable valve in the branch conduit has an opening that is adjustable responsive to the magnitude of a control signal to vary the impedance of the vapor recovery path. A controller generates the control signal to control the valve to maintain a desired volume of vapor flow in the branch conduit to draw fuel vapors from the receiving tank into the main path and modifies the control signal to reduce any discrepancy between a calculated vapor flow rate and the actual vapor flow signaled by the vapor flow sensor.
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Article by Gulf Science and Technology Company entitled: "The System Designed with Convenience in Mind" undated (No Date Available).
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Hartsell, Jr. Hal C.
Pope Kenneth L.
Cusick Ernest G.
Douglas Steven O.
Gilbarco Inc.
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