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US 4,310,033 AGranted
Liquid dispensing and uphill vapor recovery system
AssigneeThe Marley-Wylain Company
InventorElmer M. Deters
Life of this patent
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AssigneeThe Marley-Wylain Company
InventorElmer M. Deters
Estimating the term…
A liquid dispensing and vapor recovery system designed to be utilized in gasoline stations, or the like, in which the gasoline is pumped from a storage tank, through a first conduit system, and to each of several dispensing units for dispensing the gasoline to the vehicle tanks. A portion of the gasoline at each dispensing unit is diverted from the first conduit system into a second conduit system before it passes to the dispensing nozzle, and means are responsive to the gasoline flow through the second conduit system for drawing vapors from the receptacle into the second conduit system. A sump tank is connected to the second conduit system for receiving the mixture of diverted gasoline and vapor, and means are provided which are responsive to the operation of the pump for drawing the diverted gasoline from the sump tank to an additional conduit for passage back into the storage tank.
A liquid dispensing and vapor recovery system comprising storage means for said liquid, dispensing means for dispensing said liquid to a receptacle, first conduit means adapted to connect said storage means to said dispensing means, pump means for pumping said liquid from said storage means through said first conduit means and to said dispensing means, second conduit means connected to said first conduit means for diverting a portion of said liquid from said first conduit means, means responsive to liquid flow through said second conduit means for drawing the vapors from said receptacle into said second conduit means, a sump tank connected to said second conduit means for receiving said diverted liquid, third conduit means connecting said second conduit means to said storage tank for conveying vapor from said second conduit means to said storage tank, fourth conduit means connecting said sump tank to said storage tank, and means responsive to the operation of said pump for passing the diverted liquid from said sump tank to said fourth conduit means for passage into said storage tank.
In a liquid dispensing and vapor recovery system in which liquid is pumped from a storage tank to a dispensing unit for discharge into a receptacle while a portion of the liquid is diverted through an eductor to create a low pressure zone to draw vapors from the receptacle to the eductor;
Dependencies are inferred from the claim text.