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US 5,392,824 AGranted
Vapor recovery nozzle with automatic shut-off system
OwnerJoshua E. Rabinovichinventor
Life of this patent
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Abstract
The present invention relates to a vapor recovery nozzle with a turbine located in the nozzle. The turbine is driven by the flow of fuel. The turbine rotates an impeller located in the nozzle which draws away the vapor during pumping operations. The nozzle further has a hydraulic system for automatically shutting off the nozzle when fluid is displaced in an accumulator cylinder.
Claims7
An automatic shut off system for a nozzle comprising:
- means for generating a vacuum;
- a hydraulic fluid containing main cylinder;
- a hydraulic fluid containing accumulator cylinder;
- a passage means for operatively interconnecting said main cylinder and said accumulator cylinder;
- needle means normally closing said passage to prevent the hydraulic fluid from passing into said accumulator cylinder from said main cylinder;
- and
- means for moving said needle means from closing arrangement in said passage upon generation of a vacuum by said vacuum generating means.
4 more elements
In a fuel delivery vapor recovery nozzle means for controlling the flow of fuel in one direction and vapor in a second direction through said nozzle, the improvement comprising:
- a hydraulic system within said nozzle operatively connected to a fuel passage closing valve means, and a vacuum system within said nozzle, and a needle valve operatively connected to said vacuum system for controlling said hydraulic system.
Dependencies are inferred from the claim text.