Abstract: A pressure vacuum vent is disclosed which has a pressure plate having an opening, a diaphragm positioned on the pressure plate, a sealing ring for holding the diaphragm to the pressure plate, a sealing plate positioned on the diaphragm, a retaining ring for retaining the sealing ring, a screw having a cap having a vent opening, and a spring positioned between the cap and the sealing plate.

Abstract: A pressure vacuum vent is disclosed which has a pressure plate having an opening, a diaphragm positioned on the pressure plate, a sealing ring for holding the diaphragm to the pressure plate, a sealing plate positioned on the diaphragm, a retaining ring for retaining the sealing ring, a screw having a cap having a vent opening, and a spring positioned between the cap and the sealing plate

Abstract: A breakaway coupling including a pair of sleeves, one sleeve fitting within the other, each sleeve provided with a connector body, and a hose connector secured with one of the connector bodies. The first sleeve holds a metal annulus, while the second sleeve secures a ring separator, counterbored, to secure a series of round magnets therein, so that when the sleeves and their connector bodies are brought together, they are secured by the magnets into connection. When excessive force is encountered, the breakaway will separate, to prevent further discharge of fuel from the nozzle. A swivel connector secures with one of the connector bodies.

Abstract: A breakaway coupling including a pair of sleeves, one sleeve fitting within the other, each sleeve having a hose connector secured therethrough, the first sleeve holding a metal annulus, the second sleeve securing a continuous magnetic annulus, so when the sleeves are brought together the magnetic annulus secures onto the metal annulus to hold the coupler in its connected position. The continuous metallic annulus includes a metal base, a spacer that holds a series of standard round magnets equally spaced around the approximate perimeter of the spacer and its base.

Abstract: A breakaway coupling including a pair of sleeves, one sleeve fitting within the other, each sleeve provided with a connector body, and a hose connector secured partially with one of the connector bodies. The first sleeve holds a metal annulus, while the second sleeve secures a ring separator, generally counterbored, to secure a series of round magnets, so that when the sleeves and their connector bodies are brought together, they are secured by the magnets into connection, but that when an excessive force is encountered, the breakaway will separate, and prevent further discharge of fuel from the nozzle or its fuel line hose. Connecting with one of the connector bodies is a swivel connector, which can furnish a degree of pivot to the swivel, and its connected nozzle, or the hose, during usage. The swivel connector includes male and female portions, which provide for a degree of pivot, while the male portion further includes a swivel nut, which adds further turnability to the entire unit, during installation.

Abstract: A breakaway coupling including a pair of sleeves, one sleeve fitting within the other, each sleeve having a hose connector secured therethrough, the first sleeve holding a metal annulus, the second sleeve securing a continuous magnetic annulus, so when the sleeves are brought together the magnetic annulus secures onto the metal annulus to hold the coupler in its connected position. The continuous metallic annulus includes a metal base, a spacer that holds a series of standard round magnets equally spaced around the approximate perimeter of the spacer and its base.

Abstract: A carbon canister as utilized relative to underground fuel storage tank vapor recovery, including for the capture and purging of hydrocarbon vapors as air is introduced into and released from an underground storage tank, and wherein, in one form intended primarily for use in Stage II Vapor Recovery systems, the carbon canister includes a valve activated by weight of saturated carbon and wherein, in another form intended primarily for use in Stage I Vapor Recovery systems, the carbon canister is a free breathing carbon canister with a surge protection device.

Abstract: A carbon canister as utilized relative to underground fuel storage tank vapor recovery, including for the capture and purging of hydrocarbon vapors as air is introduced into and released from an underground storage tank, and wherein, in one form intended primarily for use in Stage II Vapor Recovery systems, the carbon canister includes a valve activated by weight of saturated carbon and wherein, in another form intended primarily for use in Stage I Vapor Recovery systems, the carbon canister is a free breathing carbon canister with a surge protection device.

Abstract: A carbon canister with a valve activated by the weight of nearly saturated or saturated carbon communicates with piping from an underground tank. The invention includes carbon within a casing inside a canister, a weight actuated valve, and piping in communication with the atmosphere. When an ORVR vehicle refuels, the pressure lowers in the tank that draws air into the canister. After refueling, the tank remains subject to conditions that generate hydrocarbon vapors. Those vapors then return to the canister and adhere to the surface of the carbon. The carbon, heavier with hydrocarbons, lowers the canister and closes the weight actuated valve. Closing the valve returns pressure control to an external pressure vacuum relief valve. The next refueling draws in atmospheric air to purge the hydrocarbons in the canister and thus lighten it. A secondary purge valve also removes hydrocarbons from the canister. Once the carbon lightens, the inlet valve opens and the vapors return to the canister for adsorption.

Abstract: A dripless means for a fuel dispensing nozzle begins with a nozzle for dispensing fuel into automobile tanks. Regulations limit drainage of the spout to within ten seconds, met by the present invention that prevents fuel drops from exiting the spout. First, the spout retains fuel drops behind a dam made of a series of fins upon the interior of the spout. Second, the present invention has a bushing with a weir that works in combination with the damming. Third, the nozzle has a vent tube within the spout where a plug constricts its diameter to limit the fuel drawn into the vent tube. With proper use, the present invention retains fuel drops in the spout to meet the regulations.

Abstract: An underground fuel tank releases vapors depending upon air pressure. A vapor pressure management system has a canister for a vapor recovery system that connects with piping from an underground tank and has carbon therein along with appurtenant pipes and valves. When an ORVR vehicle refuels, the pressure lowers in an underground tank that draws air through the valves into the canister. After refueling an ORVR vehicle, environmental conditions generate hydrocarbon vapors. Barometric pressure drops and evaporated fuel during long refueling lulls produce hydrocarbon vapors at an increased pressure. Those hydrocarbon rich vapors then return to the canister of the system where the carbon binds the hydrocarbons while releasing air to the atmosphere. The refueling of the next ORVR vehicle draws in atmospheric air to purge the hydrocarbons retained in the canister of the system.

Abstract: A carbon canister with a valve activated by the weight of nearly saturated or saturated carbon communicates with piping from an underground tank. The invention includes carbon within a casing inside a canister, a weight actuated valve, and piping in communication with the atmosphere. When an ORVR vehicle refuels, the pressure lowers in the tank that draws air into the canister. After refueling, the tank remains subject to conditions that generate hydrocarbon vapors. Those vapors then return to the canister and adhere to the surface of the carbon. The carbon, heavier with hydrocarbons, lowers the canister and closes the weight actuated valve. Closing the valve returns pressure control to an external pressure vacuum relief valve. The next refueling draws in atmospheric air to purge the hydrocarbons in the canister and thus lighten it. A secondary purge valve also removes hydrocarbons from the canister. Once the carbon lightens, the inlet valve opens and the vapors return to the canister for adsorption.

Abstract: A fuel dispensing nozzle having a dripless spout has a nozzle for placement in a tank. The nozzle has a housing with an air bleed device, an attitude support device extends from the housing, a gland joined to the attitude support device and then the spout attaches to the gland. At fuel shutoff, fuel remains in the gland and the spout. Fuel drops exit the gland then the spout. Regulations limit the drops to three or less. Smooth tubes have little if any capillary action while tubes with roughened interior surfaces retain fluid. The dripless spout has a texture applied to the interior surface of the gland, the spout, or both by way of a screen; a hole in the attitude support device; and the air bleed device located in the vapor path to reduce negative vacuum.

Abstract: An underground tank releases vapors depending upon air pressure. As pressure increases, vapors decline. When pressure decreases, vapors increase and escape the tank or spill to pollute the atmosphere. A container for trapping vapors has a housing upon a base. Within the housing one or more bags hang upon stems connected to piping at fittings. The stems have perforations to admit vapors into the bags. The stems are connected serially to the piping upon the base. As vapors enter the piping, the bags inflate within the housing. When tank or spill pressure declines, the vapors exit the bags and return to the tank or spill via the piping.

Abstract: A fuel storage tank vapor cooler to effect pressure reduction, in a fuel dispensing system, including the application of a refrigeration unit, that operates under the effects of a control unit, sensitive to vapor pressures, and vapor flow, to initiate the operations of the refrigeration unit, and effecting, through a properly located heat exchanger, a reduction in the temperature of the stored vapors, and thereby reducing its incident pressure. Such heat exchangers may be located either within the vapor storage area of the underground storage tank, the heat exchanger may locate in cooperation with the vapor return line, to the underground storage tank, or it may be located within the vent line from the storage tank, to chill the vapors and thereby provide for a reduction in their pressure. Such heat exchangers may be used in combination, or individually, whatever is determined to obtain the results as desired from the system of this invention.

Abstract: A fuel dispensing nozzle incorporating a lever assembly that enables a user to more easily and controllably dispense fuel through the nozzle. More particularly, the nozzle has a fuel flow path running through it, with an automatic fuel flow shutoff mechanism and a spring loaded valve assembly with an associated valve stem positioned along the fuel flow path above a lever assembly that regulates the flow of fuel through the nozzle. The lever assembly has a latch plate pivotally connected between the shutoff mechanism and a handle, such that the handle engages the valve stem to provide the user with more leverage to open the valve assembly than is available in conventional nozzle configurations.

Abstract: A fuel dispensing nozzle includes an inlet for the fuel being pumped, a spout for dispensing of the fuel, a poppet valve between the inlet and outlet, and a handle which is operable to move the poppet valve between an opened position in which fuel can flow from the inlet to the and a closed position in which fuel is prevented from flowing from the inlet to the spot. The poppet valve includes a valve member having a cap, a seal received on an under side of the cap, and a skirt, which is movable relative to the cap. The seal engages and is disengaged from the valve seat to close and open the valve. The valve member skirt has a sloped surface which engages the seal. The valve skirt is lifted by a valve stem, and when lifted, the valve member skirt engages the seal to progressively lift the seal off the valve seat.

Abstract: Apparatus and method for monitoring pressure within a vapor recovery pathway of a vapor recovery fuel system including pressure transducer linked to a radio frequency (RF) transponder. The pressure transducer detects changes in vapor pressure within a vapor recovery pathway pressure and the RF transponder relays the information to a remote site for monitoring. The radio frecuency transponder can be housed within as spacer between the vapor recovery hose and the nozzle, mounted in the nozzle itself, the fuel delivery hose, or externally to any of these elements. The detected changes in vapor line pressure can be relayed to any of the fuel dispenser to actuate adjustments in the dispensing system such as vapor recovery pump speed or other parameters.