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US 5,341,855 AGranted
Vapor recovery nozzle
OwnerJoshua E. Rabinovichinventor
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OwnerJoshua E. Rabinovichinventor
Estimating the term…
A vapor recovery nozzle has a dual passage hose connector, a fluid control body connected to the connector, a fluid turbine body connected to the fluid control body, and a fluid venturi body mounted within the fluid turbine body, a barrier flange and a vapor impeller housing surrounding a fluid and vapor conduit spout and connected to the barrier flange and fluid turbine body. A fluid turbine and a vapor impeller are mounted on opposite sides of the barrier flange on bearings which are supported on an axle extended from the venturi body. Magnetic couplings drive the vapor impeller with the fluid turbine. Fluid vapor is actively withdrawn from the tank and is moved under a positive discharge pressure through the vapor channel and in the nozzle guard, past a check valve in the vapor channel and through the vapor passage in the hose. Fluid is controlled by a popper valve which is closed in the direction of fluid flow by a spring. An inner plunger opens a valve when the inner plunger is connected to an outer plunger by needle rollers. The outer plunger is moved by a cam connected to the fluid lever. Fluid flows inward through tangential openings in a turbine chamber, and then flows through a venturi and check valve. A radial opening near the check valve produces a reduced pressure, which is raised by vapor drawn through a sensor opening near a distal end of the nozzle. The opening is closed by liquid.
A vapor recovery nozzle apparatus comprises a connector for connecting a two-passage hose, a fluid inlet, a fluid inlet chamber connected to the fluid inlet, a fluid control valve in the fluid inlet chamber for controlling flow of fluid from the fluid inlet chamber, a fluid inlet channel leading from the valve, tangential inlet ports leading from the fluid inlet channel, a turbine chamber connected to the ports, a fluid delivery channel leading from the turbine chamber, a fluid check valve connected to the fluid delivery channel, a spout, a fluid conduit in the spout leading from the check valve for conducting fluid into a tank filler neck, a vapor recovery conduit connected to the spout parallel to the fluid conduit, a vapor impeller chamber connected to the vapor conduit, a vapor impeller mounted for rotating within the vapor impeller chamber, a fluid turbine rotating within the fluid turbine chamber, and a rotation coupling connected between the fluid turbine and the vapor impeller for causing the vapor impeller to rotate upon rotation of the fluid turbine, a vapor outlet connected to the vapor impeller chamber, a vapor channel connected to the vapor outlet, a check valve connected to the vapor channel, the vapor channel connected to the connector for conducting vapor from the vapor channel into a vapor recovery passage in a hose.
A vapor recovery nozzle comprises a dual passage hose connector, a fluid control body connected to the connector, a fluid turbine body connected to the fluid control body, and a fluid venturi body mounted on an axle within the fluid turbine body, a barrier flange connected to the turbine body, a tank filler spout, a fluid conduit and a vapor conduit in the spout, a vapor impeller housing surrounding the a fluid and vapor conduit spout and connected to the barrier flange and fluid turbine body, fluid turbine and a vapor impeller mounted on opposite sides of the barrier flange on plural bearings which are supported on the axle extended from the venturi body, plural magnetic couplings connected to the vapor impeller and the fluid turbine.
Dependencies are inferred from the claim text.