Emco Wheaton Gmbh

Emco Wheaton Retail Corporation

George R Cockram

Francis B Weeks

Eric J Butterfield

Stewart M Harmon

Roy Talbot

An overfill prevention device for storage tanks includes an elongate tubular housing having a liquid flow passageway. A normally open main valve and a normally closed vapor retaining bleed valve are associated with the fluid passageway. Closure of the main valve interrupts the primary flow of liquid through the passageway and closure of the bleed valve prevents any further liquid from entering the tank and also prevents the escape of vapors from the tank. Operation of the main valve is controlled in significant part by a valve latch assembly which is carried by the housing and a relatch assembly which is carried by the main valve. The relatch assembly ensures operative engagement of the main valve with the valve latch assembly upon movement of the main valve from the intermediate position to the open position. Operation of the main valve and vapor retaining bleed valve is also controlled indirectly by a plurality of floats which are maintained in a float chamber extending adjacent the liquid passageway. Deflecting fins are also provided in the fluid passageway for preventing damage to the main valve when an elongate measuring member such as a gauge pole is inserted into the tank for measuring the level of liquid therein.

Overfill prevention device for storage tanks

A fuel dispensing nozzle easily and readily convertible between two modes which meet the regulations and operational requirements of the United States and European countries, the nozzle including a body member having a fuel passageway therethrough, a main valve in the fuel passageway to control the flow of fuel through the passageway, the main valve being removably mounted in the fuel passageway and reversible when the nozzle is to be converted into a different mode, and a valve actuating mechanism for opening the main valve in one direction when the main valve is in one attitude and in the opposite direction when the valve is in its reversed attitude.

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Apex, NC, United States of America

George R Cockram