Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver
Patent
1988-08-17
1990-01-02
Rivell, John
Pumps
Condition responsive control of pump drive motor
Responsive to accumulation of pumped liquid in receiver
417 46, 137376, 137565, F04B 4904
Patent
active
048909831
ABSTRACT:
An above-ground storage system, especially for use with hazardous materials is disclosed. The system includes a first inner tank and a second outer tank. An air-operated diaphragm pump is used to fill the tank. In order to preent overfilling of the tank and, therefore environmental contamination, a valve is installed in the air supply line to the air pump. The valve is operated by a float within the tank. When the float becomes submerged in liquid the valve is closed by an arm connected to the float.
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Cla-Val Co. (Newport Beach, Calif.), Advertising Brochure, Model CF1-C1 Float Control, date unknown.
Graco Inc. (Minneapolis, Minn.) Instructions-Parts List, Model 221-139, Series A, Double-Diaphragm Pump, 1987.
"Safe-T-Tank Corp.," Advertising Brochure (portions dated Mar. 1, 1989).
"Introducing the Agape Above Ground Waste oil Recovery System," (dated only by postmark, Jun. 7, 1989).
"Rely on Us for Liquid Storage," Reliance Tank (undated).
Facsimile from Doehrman Company, Inc., May 9, 1989.
Solomon Stuart G.
Whitman David C.
Pacific Environmental Industries
Rivell John
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