Abstract: A vacuum assist nozzle with a vapor recovery system is provided with an automatic vapor return shut-off mechanism to turn off or disable the nozzle's vapor recovery system when the nozzle is placed in the fill pipe of a vehicle having an on-board vapor recovery system. The nozzle includes a diaphragm valve placed in the nozzle's vapor flow path. The diaphragm nozzle control chamber is placed in communication with the vapor flow path. A vent tube, which forms the vapor flow path in the spout, includes a tip valve at the end thereof. The tip valve is magnetically operated, and is responsive to the presence of a magnetic field in the vehicle's fill neck, to enable or disable the vapor recovery system of the nozzle.

Abstract: 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.

Abstract: A spout gland is provided for a vapor recovery fuel dispensing nozzle assembly having a nozzle body and a nozzle spout assembly. The nozzle body includes a body fuel flow path having an inlet and an outlet and a body vapor recovery path, and a venturi valve in the body fuel flow path. The spout assembly is connected to the body and defines a spout fuel flow path and a spout vapor recovery path in communication with the respective flow paths in the nozzle body. The spout assembly includes a spout tube defining the spout fuel flow path, the spout gland, and a vapor guard. The spout gland has a diameter, in part, that is larger than the diameter of said spout tube to define a generally forwardly opening annular channel around the spout tube. The gland has at least one opening in a wall thereof to place the channel in communication with an area external of said spout gland and the body vapor flow path.

Abstract: An electronic fuel dispensing nozzle assembly adapted to reduce the undesirable effects of a pure mechanical system by providing an electromechanical fuel dispensing trigger assembly. An electromechanical fuel dispensing trigger assembly includes a valve assembly selectively displaceable between an open and a closed position and a trigger assembly selectively displaceable between a first position and a second position. Electronic elements are provided to selectively enable the trigger assembly to selectively open the valve when displaced from the first position to the second position. Furthermore, the electronic elements can also inhibit the trigger assembly, such that motion of the trigger assembly from the first position to the second position does not cause the valve assembly to be displaced from the closed position to the open position.

Abstract: A fuel dispensing nozzle has a body in which a fuel passage is formed, a spout attached to the body, a poppet valve contained within the nozzle body, for controlling the flow of fuel through the nozzle; a hand operated lever actuates the poppet valve, and the nozzle includes an automatic shut-off mechanism to provide shut-off of the nozzle, when the fuel tank is filled. The automatic shut-off mechanism includes a plunger, a latch pin disposed for vertical movement therein, with the latch pin being embraced by a diaphragm support, of the automatic shut-off mechanism, to provide a lost motion gap which allows the diaphragm to slightly shift, during initiation and dispensing of fuel, and prevent premature shut-off; the latch pin includes an annular upwardly extending collar, that is capable of connecting with a surrounding shoulder formed of the diaphragm support.

Abstract: A fuel nozzle assembly for dispensing fuel from a source to a container includes a body defining a fuel flow path and a vapor recovery path. The nozzle includes a venturi valve in the fuel flow path which defines a venturi port and a diaphragm valve positioned in the vapor recover path, The diaphragm valve has a control section having a control port which is in fluid communication with the venturi. The diaphragm valve is normally spring biased closed. When gas flows through the venturi and over the venturi port, it creates a vacuum in the diaphragm control section sufficiently strong to open the diaphragm valve so that recovered vapors may be returned to a source of fuel, or other collection area, such as an underground storage fuel tank.

Abstract: A fuel dispensing nozzle has a vent tube extending through a spout of the nozzle and automatic shut off device in communication with, and responsive to, the passage of air through the vent tube. The vent tube terminates in an air port at the tip of the spout. A tip, forming a valve, is placed at the end of the vent tube. The valve has a magnetic responsive valve member and a seat formed at the junction of tip and the vent tube. The vacuum created by the nozzle seats the magnetic valve member against the seat to close the tube to activate the automatic shut off device. A vehicle which can accept the fuel being dispensed is equipped with a magnet in the neck of the fill pipe of the tank which will attract the magnetic valve member to hold the vent tube open, so that the automatic shut off device will not be activated by a closed valve member and fuel can be dispensed to the vehicle.

Abstract: A fuel dispensing nozzle is disclosed and includes a main body portion containing a fuel passageway and a main valve controlling the flow of fuel through the fuel passageway. A lever extends from the body portion which is operable by the hand of a user holding the nozzle to open the main valve to allow fuel flow through the nozzle and a lever guard is attached to the body and extends around and under the lever. A hold-open clip is pivotally mounted to the lever guard. The lever includes notches which are positioned relative to the hold-open clip so that when the hold-open clip is rotated by the user into its operative position it may engage a notch in the lever and hold the lever in a position where the main valve is opened to allow fuel flow without requiring the user to continue to hold the lever. A removable lockout member is attached to the lever to prevent operation in the automatic hold-open mode by preventing engagement of the hold-open clip with a notch in the lever.

Abstract: A multi-compartment spout for a fuel dispensing nozzle includes a cylindrical, longitudinally extending outer wall, and at least one interior, longitudinally extending dividing wall. The dividing wall defines a fuel passageway within the spout which communicates with a fuel passageway in the body of the nozzle for dispensing fuel into the fuel tank of a vehicle, and a vapor recovery passageway within the spout which communicates with a vapor recovery passageway in the body of the nozzle for returning fuel vapor to an underground tank and thereby preventing the vapor from escaping into the atmosphere. In a preferred embodiment, the spout includes another interior longitudinally extending dividing wall which defines a shut-off passageway within the spout which communicates with a venturi-vacuum chamber in the nozzle for automatically shutting off the flow of fuel through the nozzle when the vehicle fuel tank is full.

Abstract: A vapor recovery, fuel dispensing nozzle possessing the capability of providing a slurpee function, i.e., removing liquid fuel from the vapor return passage of a hose that connects the nozzle to a fuel dispenser. Removal of the liquid fuel is achieved by a suction force derived from a venturi at the main control valve of the nozzle.

Abstract: A fuel dispensing nozzle with controlled vapor recovery including a fuel passageway, a main fuel valve in the fuel passageway, a vapor recovery passageway, a main vapor valve in the vapor recovery passageway, a manually operable trigger mechanism for controlling the main fuel valve to control the flow of fuel through the fuel passageway and for opening the main vapor valve, an auxiliary vapor valve in the vapor recovery passageway for controlling the rate of flow of vapor through the vapor recovery passageway when the main vapor valve is open, a fuel flow sensing permanent magnet in the fuel passageway and moveable responsive to the rate of fuel flow, and a follower magnet connected to the auxiliary vapor valve and magnetically coupled to the fuel flow sensing magnet for opening the auxiliary vapor valve an amount correlated to the rate of fuel flow to control the rate and thus the volume of vapor recovered in direct correlation to the rate and thus the volume of fuel dispensed.

Abstract: A safety tank apparatus is provided for installation to receive and store a liquid hydrocarbon or hydrocarbons, or the like, and from which the liquid may be withdrawn. It comprises tank structure including an inner metallic tank; an outer metallic tank protectively receiving the inner tank with accessible interior space laterally of the inner tank; a barrier wall between that interior space and the inner wall; an opening in the outer tank sidewall adjacent that interior space; and a closure closing the opening, the closure movable to expose the interior space to access from the exterior; and tank liquid flow control structure accessible through the side wall opening, for controlling filling of the liquid into the inner tank from the exterior of the safety apparatus, and for controlling liquid removal from the inner tank.

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.

Abstract: An apparatus for bulk dispensing of liquids from a reservoir includes a pump connected to the reservoir for pumping liquid from the reservoir, a dispensing structure connected to the pump for dispensing the pumped liquid and a measuring structure for measuring an amount of liquid being dispensed.

Abstract: A fuel dispensing and vapor recovery nozzle includes a body portion having a fuel passageway therethrough, a main valve in the fuel passageway for controlling the flow of fuel therethrough, a manually operable valve actuating lever for opening the main valve, a pivot member mounting the lever for pivotal movement, an elongate pivot mounting member carrying the pivot member and mounted for sliding longitudinal movement, a venturi responsive to fuel flow through the fuel passageway for creating a vacuum, a shut-off passageway from the venturi to the spout adapted to be closed when the fuel tank is filled, a locking device normally locking the pivot mounting member against longitudinal movement so that the pivot member is stationary and the lever is operable to open the main valve, a vacuum responsive device for rendering the locking device inoperable upon the shut-off passageway becoming blocked, a vapor recovery passageway in the body portion extending longitudinally therethrough, a vapor recovery passageway i

Abstract: Fuel dispensing nozzles, and vapor flow control assemblies useful with such nozzles, are constructed to maximize the possibility of collecting all of the hydrocarbon vapors displaced from the vehicle tank and upward through the fill pipe towards the atmospheric opening during filling of the tank with fuel. In one embodiment, the nozzle is provided with a boot of transparent polymeric material to facilitate positioning and enhanced recovery of fuel vapors displaced from the vehicle tank during delivery of fuel.

Abstract: A fuel dispensing nozzle includes a housing having a hollow main body portion and a handle portion with a hand-grip spaced from the main body portion, an elongate nozzle body mounted in the main body portion of the housing and having a fuel passageway extending longitudinally therethrough in a generally straight line devoid of any abrupt changes in direction, a main valve for controlling the flow of fuel through the nozzle, a manually operable valve actuator, a spout having three integrally formed passageways comprising a fuel passageway, a vapor recovery passageway and a shut-off, venturi-vacuum passageway, a vapor recovery passageway through the main body and handle portions of the housing, a venturi-vacuum device for shutting off the flow of fuel through the nozzle when the vehicle fuel tank is full, an attitude responsive device for deactivating the main valve when the nozzle is not in the proper attitude for insertion of the spout into the fill opening of the vehicle fuel tank and an attitude responsive

Abstract: This invention relates to a check valve device for a fuel pump nozzle comprising a stopper having a stem slidably extending through a bore of a support member which is securely engaged within the passage of the nozzle near the dispensing end thereof. The stopper has a plug member offset and fixedly attached to the stem to close off the passage of the nozzle with the urging of a spring mounted about the stem between the support member and a stop member which is securely attached about the stem near the opposite end thereof. The check valve device prevents liquid such as gasoline from dripping or escaping out the dispensing end of the nozzle when liquid is not being dispensed through the nozzle.

Abstract: An improved technique for providing electrical power to a fuel dispensing nozzle is disclosed. A fuel dispensing hose is provided with a fluid pathway, a vapor pathway and conductive elements are provided in the vapor pathway for transmitting intrinsically safe electric signals from a fluid dispenser to the fuel dispensing nozzle. A plurality of conductive bands are installed around a portion of the hose, and a plurality of conductive plungers in the fuel dispensing nozzle make contact with the conductive bands. As the fuel dispensing hose is twisted with respect to the nozzle, the conductive bands rotate but nonetheless remain in contact with the conductive plungers, thereby providing uninterrupted electric signals to any desired electronics installed within the fuel dispensing nozzle. On the other end of the hose, a substrate having conductive elements disposed thereon engage an aperture in the input output port of the fuel dispenser.

Abstract: A fuel dispensing nozzle including three calculated break points is provided. The first break point is provided in the spout which is calculated to fracture upon application of a force orthogonal to the axial direction of the spout. The nozzle comprises a housing having at least one opening for a dispensing valve to be selectively removably received within. A coupling or maintaining member is provided for maintaining the dispensing valve within the housing. The maintaining member is adapted to withstand application of a pre-determined force tending to separate the dispensing valve from the housing. The maintaining member allows separation of the housing and dispensing valve when the pre-determined force is exceeded. This maintaining member is the second break point. The third breakaway feature is provided in the construction of the housing which is designed to fracture prior to fracture of the gas pump or hose if the first or second break points do not fracture.

Abstract: A system that provides assistance in opening the main valve in a hydrocarbon dispenser nozzle. The external control member for opening the main valve acts on a pilot valve of small flow section, with the main valve being opened by fluid pressure applied to it as a result of the pilot valve being opened. The seat of the pilot valve is formed in the main valve member.

Abstract: A fuel dispensing nozzle is disclosed and includes a housing having a hollow main body portion and a handle portion with a hand-grip spaced from the main body portion, an elongate nozzle body mounted in the main body portion of the housing and having a fuel passageway extending longitudinally therethrough in a generally straight line devoid of any abrupt changes in direction, main valve means disposed in the fuel passageway for controlling the flow of fuel through the nozzle, manually operable valve actuating means, a spout for insertion into the fill opening of a vehicle fuel tank and having three integrally formed passageways therethrough comprising a fuel passageway, a vapor recovery passageway and a shut-off, venturi-vacuum passageway, a vapor recovery passageway through the main body and handle portions of the housing, a venturi-vacuum means for shutting off the flow of fuel through the nozzle when the vehicle fuel tank is full, attitude responsive means for preventing the opening of the main valve when

Abstract: Fuel dispensing nozzles, and vapor flow control assemblies useful with such nozzles, are constructed to maximize the possibility of collecting all of the hydrocarbon vapors displaced from the vehicle tank and upward through the fillpipe towards the atmospheric opening during filling of the tank with fuel.

Abstract: A special nozzle is provided to recover hydrocarbon vapors emitted during fueling and remove condensate collected in the vapor line, as well as to dispense fuel and remove condensate to customer tanks.

Abstract: A Stage II Vapor Recovery System is provided with a special array of storage tanks, dispensers, fuel pumps, vapor assist pumps, and flow control nozzles, to capture hydrocarbon emissions, prevent condensate from blocking vapor return lines, and dispense gasoline or other liquid fuel and condensate to customer tanks.

Abstract: A liquid spillage control apparatus is disclosed having a liquid holding chamber divided by a partition into a liquid transfer portion and a liquid retaining portion. A liquid spill transfer pipe connects the fuel holding chamber with a liquid tank. Overflow liquid passe through the liquid spill transfer pipe and the liquid transfer portion, over the partition and into the liquid retaining portion of the liquid holding chamber. An opening in the liquid holding chamber is connected by a line to an opening in a liquid fill nozzle. Liquid in the liquid holding chamber of a predetermined amount passes from the liquid holding chamber, through the line, and into the liquid fill nozzle to actuate the liquid sensor of the automatic liquid shut-off mechanism of the nozzle in order to terminate liquid flow from the nozzle into the liquid tank.

Abstract: A non-aerating fluid dispensing nozzle for dispensing fluid into a receiving tank has a vapor control and containment mechanism for vapors formed in the receiving tank. The mechanism has a chamber disposed within the housing of the nozzle and a gas passage that has a first end connected to the chamber and a second end connected to an intake aperture disposed near the distal end of the discharge nozzle. A pump is disposed in fluid flow communication with the chamber for pumping gases from the fluid receiving tank into the chamber through the gas passage during fluid flow through the nozzle.

Abstract: A vapor recovery nozzle having a turbine located in the nozzle portion which is driven by the flow of fuel. The turbine rotates an impeller also located in the nozzle which draws in the vapor during pump. The nozzle also has a hydraulic system which automatically shuts off the nozzle when fluid is displaced in an accumulator cylinder.

Abstract: A special nozzle is provided to recover hydrocarbon vapors emitted during fueling and remove condensate collected in the vapor line, as well as to dispense fuel and removed condensate to customer tanks. In the preferred embodiment, the special nozzle has a venturi sleeve with a valve seat positioned adjacent venturi ports. One of the venturi ports communicates with a condensate liquid pickup tube which removes condensed gasoline vapors in the vapor return hose. Another of the venturi ports communicates with a liquid sensing tube and an automatic shutoff valve assembly which collectively shut off the flow of gasoline when the customer's tank is filled.

Abstract: A safety tank apparatus is provided for installation to receive and store a liquid hydrocarbon or hydrocarbons, or the like, and from which the liquid may be withdrawn. It comprises tank structure including an inner metallic tank; an outer metallic tank protectively receiving the inner tank with accessible interior space laterally of the inner tank; a barrier wall between that interior space and the inner wall: an opening in the outer tank sidewall adjacent that interior space; and a closure closing the opening, the closure movable to expose the interior space to access from the exterior; and tank liquid flow control structure accessible through the side wall opening, for controlling filling of the liquid into the inner tank from the exterior of the safety apparatus, and for controlling liquid removal from the inner tank.

Abstract: A user friendly vapor recovery nozzle with special signaling devices to signal and assure the customer of proper delivery of fuel and return flow of hydrocarbon vapors. In the preferred embodiment, the signaling devices include both a fuel flow indicator and a vapor flow indicator. The flow indicators can comprise one or more fuel and vapor driven balls, paddle wheels, propellers, spinners, blades, or vanes. In the preferred form, the vapor recovery nozzle has an inner fuel spout to discharge gasoline into a customer's tank and has an outer spout which cooperates with the inner spout to provide a vapor return passageway to return vapors emitted during fueling to a vapor return hose. The nozzle has a liquid sensing tube in the vapor return passageway to sense when the customer's tank is filled. An automatic shutoff valve cooperates with the liquid sensing tube to shutoff the supply of gasoline when the customer's tank is filled.

Abstract: A safety apparatus for installation to receive and store a liquid hydrocarbon or hydrocarbons, or the like, and from which the liquid may be withdrawn comprising a structure including first and second inner metallic tanks, and an outer metallic housing protectively receiving the inner tanks, the outer housing having a side wall, there being upper interior space above the inner tanks and within the housing the second inner tank located within the first inner tank; the housing including a cover extending over the inner tanks; an opening in the sidewall, and a closure closing the opening, the closure movable to expose the upper interior space to access from the exterior; and control structure below the cover, and accessible through the opening for controlling flow of the liquid into the second tank from the exterior of the safety apparatus.

Abstract: A fuel dispensing nozzle includes a nozzle body and a projecting spout and surrounding bellows which define a fuel supply passage and a vapor return passage connected to corresponding concentric passages within flexible coaxial hoses. The body supports a manually actuated control valve within the fuel passage, and a pressure responsive check valve is also located within the fuel passage adjacent the spout. The check valve includes a valve member normally biased against a tapered valve seat, and a first venturi suction passage extends from the valve seat to control a pressure responsive diaphragm mechanism for automatically closing the manually actuated valve when fuel blocks a suction vent line within the of the spout. A second venturi suction passage extends from the valve seat through the nozzle body and connects with a fuel evacuation passage within a flexible tube which extends downwardly into the vapor passage within the coaxial hoses.

Abstract: A vapor recovery process signals to customers the presence of flow of gasoline or other liquid fuel and the return flow of vapors. In the preferred process, a customer's tank is fueled with a vapor recovery nozzle. Vapors emitted during fueling are collected by the nozzle and passed to a vapor return hose and then into a storage tank. A vapor flow indicator on the nozzle signals flow of vapors passing through the nozzle. A separate fuel flow indicator in the nozzle signals fueling, i.e., passing a fuel through the nozzle into the customer's tank.

Abstract: An adapter for a gasoline pump nozzle which is equipped with a gasoline fume return hose that extends over the rigid tubular portion of the nozzle. The hose has an outer open end which is normally aligned with the other open end of the rigid tube. The hose is resiliently compressible so that the outer end of the hose can be moved relative to the tube beyond a protuberance on the tube which is located between the outer end of the tube and the housing of the nozzle. The housing contains a valve in a trigger mechanism and a control mechanism which prevents the valve from being opened by the trigger mechanism when the hose is in its extended state but is effective to enable the valve to be opened by the trigger mechanism when the hose is compressed. The adapter has a handle in a main body portion which contains a slot in an outer opening to the slot.

Abstract: A control circuit for a beverage dispenser provides accurate uniform automatic cup filling. The circuit includes an initial latch feature which prevents premature shut-off of the dispenser valve and a mechanism for overcoming false cup-fill conditions to assure uniform filling.

Abstract: Multi-variable regulator having at least four mechanical ports having a linear transfer function between at least two of the ports. The multi-variable regulator has a body which is movable in three dimensions. Joint structure connect the body to the ports at three different points on the body. A pneumatic converter controls the position of the body.

Abstract: A hose nozzle for filling fluid into a tank and for shutting off automatically when the tank is filled is provided. The hose nozzle comprises a housing that has an inlet nozzle and an outlet pipe at opposite ends of the housing and a grip portion of an area of the inlet nozzle. A flow valve is disposed in the housing between the inlet nozzle and the outlet pipe whereby the flow valve further comprises a valve rod. A control device is provided that comprises a pressure channel and a plunger-type control element, for closing the flow valve depending on a pressure present in the pressure channel, against a direction of fluid flow, whereby the control device is disposed in the housing between the inlet nozzle and the flow valve and whereby the pressure channel is connected to a port of the outlet pipe. A manual lever, disposed within the grip portion and connected with one end thereof to the control device, actuates the flow valve and controls a fluid flow from the inlet nozzle to the outlet pipe.

Abstract: A Stage II Vapor Recovery System is provided with a special array of storage tanks, dispensers, fuel pumps, vapor assist pumps, and flow control nozzles, to capture hydrocarbon emissions, prevent condensate from blocking vapor return lines, and dispense gasoline or other liquid fuel and condensate to customer tanks. Specifically, fuel lines connect storage tank to flow control nozzles via dispensers and are assisted by fuel pumps to pump gasoline into customers' tanks. The nozzles have vapor passageways to capture hydrocarbon vapors emitted during fueling. The captured vapors are pumped by vapor assist pumps from the vapor passageways through vapor return lines into the storage tanks. The nozzles are equipped with condensate liquid pickup tubes to remove condensed vapors blocking the vapor return lines. The condensate liquid tubes communicate with condensate venturi ports adjacent venturi sleeves in the nozzles.

Abstract: A fuel dispensing nozzle (10) has a body (12) including a fuel passage for fuel to flow from a source thereof through the body. A spout (18) is attached to the body in fluid communication therewith for fuel to flow into the spout from the passage. The distal end of the spout forms a mouth (19) insertable into the tank. A vapor return path is provided for capturing fuel vapors and returning them to the source, so to substantially reduce or eliminate emissions. A vacuum is produced in a variable venturi portion (42) of the nozzle and is applied to the return path to extract any fuel collecting therein. This vacuum is in addition to another vacuum produced at the venturi and used to assist in automatically shutting-off fuel flow when the tank is full. This device is a power generating source that is not limited to only fuel extraction and nozzle shut off.

Abstract: A pre-pay fuel system having a fuel nozzle with automatic cutoff provisions when a full tank exists or unwanted tank pressure conditions are detected is also provided with a low fuel pressure controlled cutoff. The fuel pressure cutoff allows rapid response to permit fuel flow when high pressure exists in the nozzle and provides a nozzle flow cutoff after a predetermined time delay when low fuel pressure exists in the nozzle.

Abstract: An improved fuel dispensing nozzle of significantly reduced size and weight has a single diaphragm that provides the vapor regulating function as well as providing the excess pressure and excess vacuum shut-off functions. Improved shut-off function is obtained by ensuring that chamber pressure is the same as that at the spout tip disposed in the vehicle fuel tank fill pipe. The improved fuel dispensing nozzle design also reduces the amount of accidental fuel spillage which may occur when refueling is concluded.

Abstract: A fuel dispensing nozzle includes a nozzle body and a projecting spout and surrounding bellows which define a fuel supply passage and a vapor return passage connected to corresponding concentric passages within flexible coaxial hoses. The body supports a manually actuated control valve within the fuel passage, and a pressure responsive check valve is also located within the fuel passage adjacent the spout. The check valve includes a valve member normally biased against a tapered valve seat, and a first venturi suction passage extends from the valve seat to control a pressure responsive diaphragm mechanism for automatically closing the manually actuated valve when fuel blocks a suction vent line within the of the spout. A second venturi suction passage extends from the valve seat through the nozzle body and connects with a fuel evacuation passage within a flexible tube which extends downwardly into the vapor passage within the coaxial hoses.

Abstract: Safety tank apparatus for installation to receive and store a liquid hydrocarbon or hydrocarbons, or the like, and from which liquid may be withdrawn, including: tank structure including an inner metallic tank, and an outer metallic tank protectively receiving the inner tank, the outer tank having a side wall, there being upper interior space above the inner tank and within the tank structure; the tank structure including a cover extending over the interior space; an opening in the sidewall, and a closure closing the opening, the closure movable to expose the upper interior space to access from the exterior; and control structure below the cover, and accessible through the opening for controlling flow of the liquid into the inner tank from the exterior of the safety apparatus; the closure extending above the level of liquid in the inner tank.

Abstract: A fluid dispensing nozzle including electrical and electro-mechanical flow controls and an electrical overflow protection mechanism.

Abstract: A fuel dispensing nozzle (10) has a body (12) in which a fuel passage is formed. A spout assembly (18) is attachable to the body in fluid communication therewith for fuel to flow from the body through the spout and into a tank (T). A valve (20) is interposed in the passage and controls fuel flow through the body. A flexible bellows (80) fits over the spout with the outer end (72) thereof sealingly engaging an inlet (I) of the tank to prevent fuel vapors from escaping into the atmosphere. A control apparatus is responsive to movement of the bellows when the spout is inserted into the tank to open the valve, and to removal of the spout from the tank to close the valve. An apparatus (176) is responsive to the vapor pressure within the tank to effect closing of the valve when an overpressure condition occurs thereby to prevent vapor from escaping into the atmosphere.

Abstract: A fuel dispensing nozzle (10) has a body (12) in which a fuel passage is formed. A spout assembly (18) is attachable to the body in fluid communication therewith for fuel to flow from the body through the spout and into a tank (T). A valve (20) is interposed in the passage and controls fuel flow through the body. A flexible bellows (80) fits over the spout with the outer end (72) thereof sealingly engaging an inlet (I) of the tank to prevent fuel vapors from escaping into the atmosphere. A control apparatus is responsive to movement of the bellows when the spout is inserted into the tank to open the valve, and to removal of the spout from the tank to close the valve. An apparatus (176) is responsive to the vapor pressure within the tank to effect closing of the valve when an overpressure condition occurs thereby to prevent vapor from escaping into the atmosphere.

Abstract: A fluid dispensing nozzle for gasoline or the like includes a cast body having an inlet, an outlet, a valve seat between the inlet and the outlet, and a hand guard. Mounted in and on the cast body are a poppet valve for controlling flow through the valve seat, a spring urging the poppet valve closed, a valve stem extending into the poppet valve, a cast lever engaging the valve stem for manually urging the poppet valve away from its seat, and a high-level shut-off means for disabling the lever. The high level shut-off means includes a plunger to which the actuating lever for the nozzle is pivoted, a latch pin, latching balls, and a cylindrical sleeve which acts as a guide for the plunger and as a stop for the latching balls. A hold-open clip is pivoted to the integral hand guard and engages latching teeth on the lever. Release of the high-level shut-off causes a heel portion of the lever to force the clip out of engagement with the teeth.

Abstract: A vent tube assembly (10) for use with a supply of fuel to a fuel tank (12) mounted in a vehicle (14), which enables an operator to fill the tank (12) with a reasonably predictable quantity of fuel to its normal capacity. The vent tube assembly (10) comprises an inner vent tube (24) having at least one inner venting port (26) defined therein. The inner vent tube (24) extends downwardly through the tank (12) for relieving vapor pressure in the tank as the volume of fuel contained therein increases during replenishment from the supply until the fuel in the tank rises to a shut-off level (30). An outer vent tube (32) lies in telescoping relationship with the inner vent tube (24) and has a base (34) which is received by the lower portion of the fuel tank. The outer vent tube (32) is provided with at least one outer venting port (36). A spring urges the outer vent tube (32) toward an extended position so that the outer vent tube (32) is loaded against the lower portion of the tank (12).

Abstract: A fuel dispensing nozzle includes a nozzle body and a projecting spout and surrounding bellows which define a fuel supply passage and a vapor return passage connected to corresponding concentric passages within flexible coaxial hoses. The body supports a manually actuated control valve within the fuel passage, and a pressure responsive check valve is also located within the fuel passage adjacent the spout. The check valve includes a valve member normally biased against a tapered valve seat, and a first venturi suction passage extends from the valve seat to control a pressure responsive diaphragm mechanism for automatically closing the manually actuated valve when fuel blocks a suction vent line within the of the spout. A second venturi suction passage extends from the valve seat through the nozzle body and connects with a fuel evacuation passage within a flexible tube which extends downwardly into the vapor passage within the coaxial hoses.