Liquid dispensing nozzles having improved view glass/flow indicators
First Claim
1. A fuel dispensing nozzle comprisinga nozzle body, one end of which is adapted for connection with a fuel hose,a spout projecting from another end of the nozzle body for the discharge of fuel from the nozzle,a main fuel passage, extending, through the nozzle body, from the inlet end to and through the spout for discharge of fuel therefrom, said main fuel passage defining the flow path for at least substantially all of the fuel flowing from the inlet end of the nozzle body to the spout,a main valve for controlling the flow of fuel through the fuel passage,view glass/flow indicator means for providing visual inspection of said substantially all the fuel flowing through said passage and a visual indication that fuel is being discharged from the nozzle spout and at what rate,characterized in thatthe view glass/flow indicator means define, in part, the fuel passage and are disposed downstream of the main valve.
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Accused Products
Abstract
A fuel dispensing nozzle is provided with a view glass/fuel flow indicator that are disposed between the main fuel valve and a downstream check valve. The view glass/flow indicator means comprise a pair of horizontally aligned view glasses. A plurality of embodiments illustrate the use of different sub-assemblies in providing the view glass/flow indicator functions, as well as different provisions for obtaining a seal that prevents leakage of fuel at the view glass units.
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Citations
43 Claims
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1. A fuel dispensing nozzle comprising
a nozzle body, one end of which is adapted for connection with a fuel hose, a spout projecting from another end of the nozzle body for the discharge of fuel from the nozzle, a main fuel passage, extending, through the nozzle body, from the inlet end to and through the spout for discharge of fuel therefrom, said main fuel passage defining the flow path for at least substantially all of the fuel flowing from the inlet end of the nozzle body to the spout, a main valve for controlling the flow of fuel through the fuel passage, view glass/flow indicator means for providing visual inspection of said substantially all the fuel flowing through said passage and a visual indication that fuel is being discharged from the nozzle spout and at what rate, characterized in that the view glass/flow indicator means define, in part, the fuel passage and are disposed downstream of the main valve.
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33. A fuel dispensing nozzle comprising
a nozzle body, one end of which is adapted for connection with a fuel hose, a spout projecting from another end of the nozzle body for the discharge of fuel from the nozzle, a fuel passage, extending, through the nozzle body, from the inlet end to and through the spout for discharge of fuel therefrom, a main valve for controlling the flow of fuel through the fuel passage, view glass/flow indicator means for providing visual inspection of the fuel flowing through said passage and a visual indication that fuel is being discharged from the nozzle spout and at what rate, wherein the view glass/flow indicator means define, in part, the fuel passage, and characterized in that the view glass/flow indicator means comprise a pair of view glasses, disposed in generally horizontally aligned relation and, respectively, defining opposed portions of the flow passage, whereby light may pass from one side of the nozzle body to the other, through the fuel passage, to enhance visual inspection of the fuel and observation of the flow indicator means, opposed portions of the side walls of the nozzle body, that define the fuel passage, downstream of the main valve, are provided with horizontally aligned openings and the view glass/flow indicator means comprise a pair of transparent discs mounted, respectively, in said openings, a pair of flow indicator units mounted, respectively in said openings for viewing through said transparent discs, each flow indicator is in the form of a subassembly comprising a vaned rotor, a mounting ring, and means for rotatably mounting the rotor on the mounting ring.
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34. A fuel dispensing nozzle comprising
a nozzle body, one end of which is adapted for connection with a fuel hose, a spout projecting from another end of the nozzle body for the discharge of fuel from the nozzle, a fuel passage, extending, through the nozzle body, from the inlet end to and through the spout for discharge of fuel therefrom, a main valve for controlling the flow of fuel through the fuel passage, view glass/flow indicator means for providing visual inspection of the fuel flowing through said passage and a visual indication that fuel is being discharged from the nozzle spout and at what rate, wherein the view glass/flow indicator means define, in part, the fuel passage, and characterized in that the view glass/flow indicator means comprise a pair of view glasses, disposed in generally aligned relation and, respectively, defining opposed portions of the flow passage, whereby light may pass through the fuel passage, to enhance visual inspection of the fuel and observation of the flow indicator means.
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36. A fuel dispensing nozzle comprising
a nozzle body, one end of which is adapted for connection with a fuel hose, a spout projecting from another end of the nozzle body for the discharge of fuel from the nozzle, a fuel passage, extending, through the nozzle body, from the inlet end to and through the spout for discharge of fuel therefrom, a main valve for controlling the flow of fuel through the fuel passage, view glass/flow indicator means for providing visual inspection of the fuel flowing through said passage and a visual indication that fuel is being discharged from the nozzle spout and at what rate, wherein the view glass/flow indicator means define, in part, the fuel passage, and characterized in that the view glass/flow indicator means comprise a pair of view glasses, disposed in generally horizontally aligned relation and, respectively, defining opposed portions of the flow passage, whereby light may pass from one side of the nozzle body to the other, through the fuel passage, to enhance visual inspection of the fuel and observation of the flow indicator means, and further characterized in that the view glass/flow indicator means comprise flow indicator means comprising of a single rotor.
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38. A fuel dispensing nozzle comprising
a nozzle body, one end of which is adapted for connection with a fuel hose, a spout projecting from another end of the nozzle body for the discharge of fuel from the nozzle, a fuel passage, extending, through the nozzle body, from the inlet end to and through the spout for discharge of fuel therefrom, a main valve for controlling the flow of fuel through the fuel passage, view glass/flow indicator means for providing visual inspection of the fuel flowing through said passage and a visual indication that fuel is being discharged from the nozzle spout and at what rate, wherein the view glass/flow indicator means define, in part, the fuel passage, characterized in that the view glass/flow indicator means comprise a pair of view glasses, disposed in generally aligned relation and, respectively, defining opposed portions of the flow passage, whereby light may pass through the fuel passage, to enhance visual inspection of the fuel and observation of the flow indicator means, and further characterized in that the view glass/flow indicator means comprise a cage extending between the view glasses and permitting flow of fuel therethrough, when the main valve is open and at least one solid member, disposed within said cage, movable in response to flow of fuel through said cage to provide a visual indication of fuel flow.
Specification