Abstract: An arrangement in an anesthesia vaporizer comprising a liquid container including a vapor generator; a filling device; and conduits for supplying anesthetic from a transport and storage container to the liquid container and/or for removing anesthetic from the liquid container, and for conveying an amount of replenishment gas corresponding to the amount of anesthetic liquid from the liquid container to the transport and storage container upon filling the container and/or inversely upon emptying. For improved operating safety, the filling device is provided with a closing means, adapted to close a filling conduit which opens to the inside of the liquid container and a replenishment gas conduit between the liquid container and the transport and storage container through an overpressure generated in the transport and storage container, and thus prevent anesthetic liquid from flowing to the liquid container.

Abstract: A filling valve assembly for filling a container (11) with a fluid material and comprising a valve body (16) having an outer wall (18) defining an inner chamber (20). A vent tube (30) extends upwardly through the chamber (20) for ventilating the container (11) when the container (11) is filled with the fluid material and defining at least one fluid passageway (38) disposed between the outer wall (18) and the vent tube (30) for allowing the fluid material to discharge from the chamber (20) and into the container (11). A first screen (62) is disposed across said fluid passageway (38) and the assembly is characterized by a second screen (64) disposed across the passageway (38) in spaced relationship to and below the first screen (62) whereby the capillary action of both screens (62) and (64) accumulate to more precisely fill successive containers (11) to equal volumes.

Abstract: A method of and apparatus for filling a volatile liquid into at least one tank (10) of a multi-tank installation having a vent-pipe (11A, 11B . . . 11F) associated with each tank, all of the vent-pipes being connected to a common vent manifold (13) through respective over-pressure valves (12A, 12B . . . 12F). A vapor extraction manifold (16) is also connected to each over-pressure valve (12A, 12B . . . 12F) and during a tank filling operation is coupled to a vapor extraction mechanism. Both the vent manifold (13) and the extraction manifold (16) are provided with pressure sensitive valves (15, 19) respectively to allow air to enter the manifolds from the ambient when the pressure within the respective manifold falls below atmospheric.

Abstract: In a sealing device for a filling opening, especially for sealing it against the escape of fuel fumes when filling stationary or mobile supply tanks, a seal is located in the vicinity of the filling opening and abuts in a sealing fashion an object such as a filling device that is inserted into the filling opening. The seal automatically controlled by means of a control unit between an inactive resting position and an active sealing position of the seal. As a result, the seal is protected especially well against damage during insertion or withdrawal of the filling device, and reliable sealing can be expected in the long term.

Abstract: A two-stage venting on-board refueling vapor recovery (ORVR) valve for controlling fuel tank venting to a storage canister during tank filling. A float actuated poppet has a small second stage venting hole therethrough. The poppet is mounted for relative movement with respect to a second stage vent valve member disposed on the float. During tank filling, venting is through a first stage relatively large flow area passage until rising fuel level causes the poppet to close the first stage vent flow area. Venting during continued filling is through the second stage venting hole in the poppet. After first stage valve closure relative movement or lost motion occurs between the first and second stage valve members.

Abstract: An apparatus is provided for detecting the presence of a vehicle equipped with an onboard refueling vapor recovery system. The apparatus has a body that is equipped with an inlet fluid port and an outlet fluid port that is in fluid communication with the inlet fluid port. The body also has an inlet vapor port that is in fluid communication with the outlet fluid port. The apparatus further includes a vacuum chamber that is located within the body, and that is in fluid communication with the vapor port and the outlet port. The apparatus has a vaccum activated detecting switch coupled to the body that is in fluid communication with the vacuum chamber. A vacuum-generating nozzle is coupled within the body between the inlet port and the vacuum chamber. Fuel may be provided to the inlet port and routed through the nozzle to create a vacuum within the chamber.

Abstract: A quick-connect coupling assembly, and method of making same, for connecting a fuel fill pipe to a fuel tank made of a polyethylene based material. A mounting bracket subassembly has a base molded of such tank-type material that is plastic welded to the tank fill opening margin. A second more stable plastic material also is used in the bracket not only to anchor the connection between the fuel tank and the fill pipe and to provide the necessary resistance to pull force against disconnection, but also to contain the polyethylene bracket material in such a way as to minimize geometric (dimensional) changes due to fuel absorption and creep in the critical region of the connection that contains the O-ring seals or like sealing elements.

Abstract: An onboard vapor recovery system for a vehicle fuel system having a fuel tank, a filler neck dynamically sealed by high pressure fuel flow from a filler nozzle, and a vapor recovery apparatus such as a carbon canister. The system includes a liquid level operated control valve which shuts off refueling with a two-stage closing operation providing an initial soft shutoff and a final shutoff. The system also preferably includes a valve in the fuel tank to maintain a predetermined pressure head sufficient to hold the system closed against further refueling at least temporarily, and a positive action, one-way check valve in the lower end of the filler pipe to prevent spitback of fuel from the pressurized tank once refueling has ceased.

Abstract: A fuel dispensing system, parts therefor and methods for making the same are provided, the system having a venturi section for removing liquid from a normal drape area of a hose assembly of the system, the venturi section having an inlet unit that is positioned in a vapor recovery fluid passage of the hose assembly generally at the actual drape area of the hose assembly even when the actual drape area is disposed intermediate the normal drape area and a dispensing nozzle or is disposed intermediate the normal drape area and the source of liquid fuel as well as when the actual drape area is disposed generally at the normal drape area.

Abstract: An onboard vapor recovery system for a vehicle fuel system having a fuel tank, a filler neck dynamically sealed by high pressure fuel flow from a filler nozzle, and a vapor recovery apparatus such as a carbon canister. The system includes a liquid level operated control valve which shuts off refueling with a two-stage closing operation providing an initial soft shutoff and a final shutoff. The system also preferably includes a valve in the fuel tank to maintain a predetermined pressure head sufficient to hold the system closed against further refueling at least temporarily, and a positive action, one-way check valve in the lower end of the filler pipe to prevent spitback of fuel from the pressurized tank once refueling has ceased.

Abstract: A method and apparatus for preventing over-pressurization of vessel during filling with a fluid where temperature of the vessel would cause the fluid to flash or rapidly expand on contact. A shut off device is placed in a conduit between the fluid source and the vessel being filled, the shut off device including a flow control piston that is held in position to permit fluid flow. Fluid pressure from the displacement space in the vessel is provided on both end of the piston. When a condition of over-pressurization occurs in the vessel a rupture disc associated with one end of the piston fails and causes a depressurization on that end of the piston causing it to move to a position where further filling of the vessel is prevented. The piston is positioned by a buckling pin and can be reset after over-pressurization of the vessel is connected and filling can resume.

Abstract: An onboard vapor recovery system for a vehicle fuel system having a fuel tank (10), a filler neck (12) dynamically sealed by high pressure fuel flow from a filler nozzle, and a vapor recovery apparatus such as a carbon canister (18). The system preferably uses an inventive liquid level operated control valve (20) which shuts off refueling with a two-stage closing operation providing an initial soft shutoff and a final shutoff. The system also preferably includes a valve (22) in the fuel tank to maintain a predetermined pressure head sufficient to hold the system closed against further refueling at least temporarily, and a positive action, one-way check valve (24) in the lower end of the filler pipe (12) to prevent spitback of fuel from the pressurized tank (10) once refueling has ceased.

Abstract: An outlet closure element in the embodiment is a metal or other material, e.g., plastic, plate which is circular in plan, formed in one piece and which has a substantially central frusto-conical upwardly directly (as considered in use) inset or profile. The periphery of the rim element has a plurality of projecting interengaging portions, in the embodiment four, equiangularly spaced, bayonet shaped locators or slots for releasable interengaging cooperation with members in the form of four bayonet kind of lugs located on the periphery of the outlet of the container.

Abstract: A fuel dispensing system, parts therefor and methods for making the same are provided, the system having a venturi section for removing liquid from a normal drape area of a hose assembly of the system, the venturi section having an inlet unit that is positioned in a vapor recovery fluid passage of the hose assembly generally at the actual drape area of the hose assembly even when the actual drape area is disposed intermediate the normal drape area and a dispensing nozzle or is disposed intermediate the normal drape area and the source of liquid fuel as well as when the actual drape area is disposed generally at the normal drape area.

Abstract: Coaxial inner and outer flexible hoses connect with corresponding concentric tubular coupling members and define an inner vapor return passage and a surrounding annular fuel supply passage. The hoses and coupling members extend between a vapor recovery fuel dispensing pump and a vapor assist fuel dispensing nozzle. The tubular inner coupling member is formed in two threadably connected tubular sections which define an annular valve seat surrounding the vapor return passage. A poppet-type check valve member is supported within the vapor return passage down stream of the valve seat for axial movement from a normally open and unrestricting retracted position to a closed position engaging the valve seat in response to pressurized fuel entering the vapor return passage.

Abstract: By means of the device and the process, a defective pneumatic tire of the vehicle is provided with emergency running properties. This takes place by means of an inflating device, after the removal of which from the loading space, a signal is triggered, which constantly reminds the driver to move the vehicle only within the range of predetermined speeds. By means of the process, it is ensured that improper actions which would be possible in connection with the pneumatic tire with emergency running properties, are largely avoided.

Abstract: A vapor recovery hose assembly for connecting a liquid fuel dispensing pump to a liquid fuel dispensing nozzle includes a venturi pump for aspirating liquid fuel condensates from the vapor recovery passageway capable of useful operation over a wide range of the liquid fuel flow rates. At relatively low flow rates, all of the liquid fuel passes through the throat of a venturi tube located within the pump. As the flow rates increase, increasing amounts of the liquid fuel are bypassed around the venturi throat. In a preferred embodiment, the liquid fuel which bypasses the throat of the venturi tube flows through the bore of a hollow, bypass tube that partly surrounds the venturi tube and is spring-biased toward the upstream end of the venturi tube.

Abstract: The invention described in the patent is an automatic control system which provides monitoring, supervision, and control of the process of filling of a tank or container with a liquid. The invention is applicable to cases where the liquid is handled in contact with its own vapor only, or where the liquid must be maintained at all times under a specified gas pressure. The invention provides an improved method of carrying out the process of filling of tanks or containers with liquids such as ammonia, chlorine, propane, liquefied petroleum gas, or with liquids such as carbonated beverages. The main advantage provided by the apparatus and method of the present invention is that an improved means is included for automatically stopping the filling process at the correct point, so as to avoid a possibly hazardous overfilled condition.

Abstract: An automated balloon inflation device which has a supply of pressurized gas, a nozzle for receiving a balloon, and an actuator for sequentially closing a clamp on the balloon and the nozzle and subsequently supplying the pressurized gas to the balloon for the inflation thereof. Furthermore, a key-weight device may be employed for the dual purpose of controlling the supply of pressurized gas to the nozzle and to prevent the inadvertent loss of an inflated balloon which is secured to the key-weight. Additionally, the automated balloon inflation device is constructed so that any consumer may inflate a balloon with pressurized gas.

Abstract: A fuel dispensing system, parts therefor and methods for making the same are provided, the system having a venturi section for removing liquid from a normal drape area of a hose assembly of the system, the venturi section having an inlet unit that is positioned in a vapor recovery fluid passage of the hose assembly generally at the actual drape area of the hose assembly even when the actual drape area is disposed intermediate the normal drape area and a dispensing nozzle or is disposed intermediate the normal drape area and the source of liquid fuel as well as when the actual drape area is disposed generally at the normal drape area.

Abstract: An onboard vapor recovery system for a vehicle fuel system having a fuel tank, a filler neck dynamically sealed by high pressure fuel flow from a filler nozzle, and a vapor recovery apparatus such as a carbon canister. The system includes a liquid level operated control valve which shuts off refueling with a two-stage closing operation providing an initial soft shutoff and a final shutoff. The system also preferably includes a valve in the fuel tank to maintain a predetermined pressure head sufficient to hold the system closed against further refueling at least temporarily, and a positive action, one-way check valve in the lower end of the filler pipe to prevent spitback of fuel from the pressurized tank once refueling has ceased.

Abstract: A fuel-delivery control system is provided for use in a fuel tank. The fuel-delivery system includes a housing module formed to include a fuel-delivery channel and a check valve assembly positioned to lie in the fuel-delivery channel. The check valve assembly includes a support base formed to include a guide passageway, a mounting fixture inserted into the fuel-delivery channel and arranged to interconnect the housing module and the support base, a valve member, and a spring. The valve includes a guide stem extending into the guide passageway for movement therein and a closure member appended to the guide stem for movement with the guide stem between a channel-closing position engaging the housing module and a channel-opening position disengaging the housing module. The guide stem moves in the guide passageway as the closure member moves between the channel-opening position and channel-closing position. The spring yieldably urges the valve member to its channel-closing position.

Abstract: In an apparatus for filling bottles with liquid, the liquid supply tank has several bottle filling adapters mounted to its body and providing a valve seat for liquid to flow from the tank to a bottle. The seat is proximate to a vertically movable valve body which has an integral tubular stem extending upwardly from it and a gas tube extending downwardly from it so gas can be conducted downwardly into a bottle and upwardly for being exhausted or returned to the tank. In the bore of the tubular combination gas conducting tube and valve stem there is a wire constituting a filling level probe. The tip of the wire is exposed in the gas tube to liquid in the bottle and the body of the wire is insulated and runs upwardly through the bore of the tubular stem where it is terminated in a cylindrical conductive element that enters an electrical connector. The connector provides a lead to a microprocessor based controller.

Abstract: A thin elongated metal tube of a diameter less than the diameter of a inlet aperture within the top of a fuel tank and opening upwardly therefrom has a closed lower end inserted within the aperture. The metal tube is supported by a radially enlarged collar on the periphery of the metal tube intermediate of its ends, having a diameter in excess of the diameter of the fuel inlet aperture. Purge gas distribution openings are provided within the lower opposite end of the metal tube to distribute purge gas interiorly of the fuel storage tank. The weight of the distribution nozzle is set to balance axially upward lift forces developed during inert gas pressurization of the tank to prevent overpressurization and rupture of the tank when the gas pressurization of the tank reaches a predetermined level less than that causing rupture of the tank.

Abstract: A can filling machine having an improved mechanism to prevent overfill of the can. The machine includes a group of filling heads mounted on a rotatable turntable, and each head includes an outer tubular housing having an open upper end that communicates with a reservoir of the liquid, such as a beverage, which is intended to introduced into the can. A can is moved upwardly and is sealed against a cylindrical tulip that is mounted outwardly of the housing. A fill tube is mounted concentrically within the housing and the space between the fill tube and the housing defines an annular flow chamber for the liquid. Located concentrically within the fill tube is an air vent tube and the lower end of the air vent tube communicates with the can. The lower end of the fill tube carries a valve which is adapted to engage a valve seat on the lower end of the housing. Located in the lower end of the annular flow chamber is a stack of horizontal discs which are spaced vertically apart.

Abstract: A refueling vapor recovery system for a vehicle utilizes recirculation of a portion of the displaced vapor and combines a vapor vent valve and a recirculation control into a single differential pressure valve assembly. A vapor vent conduit provides fuel tank vapor pressure to one side of a diaphragm and, through a restricted orifice, to the other side of the diaphragm, the other side being further connected by a recirculation conduit to the tank filler neck. When a gas cap closes the filler neck from the atmosphere, the orifice allows pressure to equalize across the diaphragm; and a spring biases the diaphragm to close a vapor vent valve.

Abstract: A fuel dispensing system, parts therefor and methods for making the same are provided, the system having a venturi section for removing liquid from a normal drape area of a hose assembly of the system, the venturi section having an inlet unit that is positioned in a vapor recovery fluid passage of the hose assembly generally at the actual drape area of the hose assembly even when the actual drape area is disposed intermediate the normal drape area and a dispensing nozzle or is disposed intermediate the normal drape area and the source of liquid fuel as well as when the actual drape area is disposed generally at the normal drape area.

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: The apparatus for refilling compressed air aerosol bombs, or sprayers, comprises a reservoir (2), for containing the active substance to be charged, in which is immersed a refiller tank (4) capable of containing a quantity of active substance not greater than a single charge of an aerosol bomb, which tank is endowed with a check valve (6) for the inlet of the active substance from the reservoir, a pipe (16) for the inlet of compressed air from the outside, and a suction pipe (10) ending in a quick connection valve of male or female type (8) for the connection with a corresponding valve of a respective female or male type provided on the bottom of the bomb which is to be refilled. The latter has a beak shaped head where the atomizer valve is assembled with a quick slipping off connection (52).

Abstract: A gauge block assembly for use in conjunction with the refilling of high pressure gaseous oxygen cylinders. The gauge block is used in an oxygen transfill header or manifold and includes a gas transfer control unit that allows rapid evacuation of the spent oxygen cylinder but that prevents rapid refilling of the oxygen cylinder with fresh oxygen. The gas transfer control unit includes a valve assembly having a restricted orifice therethrough. During the evacuation process, the check valve opens, bypassing the restricted orifice, to allow rapid evacuation of the oxygen cylinder at a first rate of flow. During the refilling process, the check valve closes. The incoming oxygen must flow through the restricted orifice at a second rate of flow less than the first rate of flow thereby regulating the flow of oxygen.

Abstract: A fuel dispensing system, parts therefor and methods for making the same are provided, the system having a venturi section for removing liquid from a normal drape area of a hose assembly of the system, the venturi section having an inlet unit that is positioned in a vapor recovery fluid passage of the hose assembly generally at the actual drape area of the hose assembly even when the actual drape area is disposed intermediate the normal drape area and a dispensing nozzle or is disposed intermediate the normal drape area and the source of liquid fuel as well as when the actual drape area is disposed generally at the normal drape area.

Abstract: An apparatus and method for efficiently metering and transferring a cryogenic liquid, such as liquefied natural gas, from a storage vessel to, for example, a vehicle fuel tank. The apparatus incorporates a programmable controller, a motor-driven pump and a network of conduits with motor-operated valves and liquid sensors for effecting a priming of the pump with liquid free of vapor and a cool-down of the flow passages prior to a transfer operation for ensuring that a vapor-free liquid is delivered. A pair of flow meters, one for liquid and the other for returned vapor, allows a reliable determination of the amount of liquid delivered to--and remaining in--a receiving vessel. The apparatus employs a delivery nozzle with quick-disconnect valved fittings and a delivery nozzle incorporating features which allow it to be handled by an operator without the use of heavy gloves.

Abstract: An apparatus for dispensing volatile liquid fuel with recovery of fuel vapors includes a fuel delivery system having a fuel delivery line and a pump in the line to pump fuel there-along to a nozzle. A vapor recovery subsystem includes a vapor return line from the nozzle and a vapor impulsion means to induce vapor to flow through the vapor return line at a vapor flow rate comparable to the liquid flow rate through the fuel delivery line during most of a fueling operation. A vapor impulsion booster boosts the vapor flow rate above the liquid flow rate early in a fueling operation.

Abstract: An internal gas removal system for a fuel tank is comprised of a venting system and a breathing system, both of which are placed substantially completely inside the fuel tank. The breathing system removes gases from the fuel tank while fuel is introduced into the fuel tank, while the venting system removes gases from the fuel tank while the vehicle is operated and the fuel is not introduced into the fuel tank. Both, the venting and the breathing systems are connected to their respective exit lines which exit the fuel tank through a single dedicated opening or through a filler pipe. A method of making the internal gas removal system comprises introducing the breathing and the venting systems into a blow mold and subsequently blow-molding the fuel tank around these systems.

Abstract: 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.

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 device for mounting in a fuel dispensing hose that has a flexible inner tube defining the fuel conduit, and a tubular outer sleeve that defines with the inner tube an annular vapor return passage. The device includes a venturi section adapted for serial connection with the inner tube within the outer sleeve. The section comprises a cylindrical block that connects at each end with an end of the inner tube and defines a venturi forming part of the fuel conduit. The block also has an aspirator means that defines at least two radial ports communicating between the venturi throat and the annular vapor passage. Each radial port has a check valve to block fuel flow from the fuel conduit to the vapor passage.

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: An overhead vacuum assembly for recovering, storing and dispensing flowable packaging material including a flexible storage bag having an open upper end for receiving flowable packaging material, a dispensing valve mounted at the lower end of the bag, a liner or frame for maintaining the perimeter shape of the flexible bag, a cover mounted at the open upper end of the flexible bag, a fan motor assembly, including a filter, mounted to the cover for creating a vacuum in the bag and a hose mounted to the cover. The filter acts as a deflector to evenly distribute the loose fill throughout the bag during the recovery process. The cover may have a pyramidal shape and tear-away panels for ease of maintenance.

Abstract: An automotive fuel tank filler pipe contains a two-piece tubular or hollow, opened ended, nested housing in which is fixed an essentially solid disk blocking the opening therethrough and containing a fuel nozzle opening therethrough closed by a spring biased sealing flap door, and including a pair of oppositely acting one-way vacuum-break and pressure relief valves for automatically controlling the pressure conditions in the fuel tank, the structure preventing the unwanted discharge of fuel vapors/liquid into the atmosphere in the event that the fuel cap or closure member normally closing the upper end of the fill pipe is accidentally left off or not replaced or damaged after a refueling operation.

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 fuel dispensing system has a venturi section for removing liquid from a normal drape area of a hose assembly of the system and the venturi section has an inlet unit that is positioned in a vapor recovery fluid passage of the hose assembly generally at the actual drape area of the hose assembly even when the actual drape area is disposed intermediate the normal drape area and a nozzle or is disposed intermediate the normal drape area and the source of liquid fuel as well as when the actual drape area is disposed generally at the normal drape area, the inlet unit comprising a tube unit interconnected to the venturi section and having a plurality of inlets respectively disposed in different axial positions in the vapor recovery fluid passage along the length thereof.

Abstract: An auxiliary vapor recovery device is described for use with a fuel dispenser for delivery of fuel from tanks into a vehicle and a recovery apparatus for return of hydrocarbon vapor/air mixture displaced by fuel delivery to ullage spaces of the storage tanks interconnect by a piping manifold. The auxiliary vapor recovery device includes a vacuum pump and a canister containing a substance for removal of molecules of hydrocarbon from a vapor/air mixture. The device also has a system of conduits, including between the vacuum pump and ullage space piping system for flow to and from the ullage space, to the canister, between the vacuum pump and canister, and from the canister for release of air.

Abstract: A vapor recovery system for a fuel filling installation in which the recovered air-vapor mixture is pumped to the submerged end of a discharge pipe. The discharge pipe is connected to a closed tube which extends along the bottom of an underground fuel tank. The closed tube has a porosity that generates very small bubbles from the air-vapor mixture that flows through the fuel within the tank. A vent pipe for the underground tank separates air from the air-vapor mixture through decreasing density separation by means of a large cross-section for the vent pipe and by providing baffles in the pipe interior.

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 reusable isolation structure features an easily cleanable shell. The opening of the shell includes a groove formed around the periphery thereof and is preferably not more than slightly smaller than an interior cross-section of the shell. A closure member (door) of the isolation structure is dimensioned to fit within the opening and has a resilient seal member clamped to the periphery of a backbone by front and rear plates. The front and rear plates cooperate with grooves formed in the backbone to define a preferred form of manifold for coupling pressure or a vacuum to the interior of the resilient seal member whereby the resilient seal member may be collapsed to allow removal of the closure member or allowed to expand or pressurized to provide secure closure member. A vacuum structure for handling the closure member simultaneously provides for evacuation and controlled collapse of the resilient seal member as well as containment of contamination of the exterior thereof.

Abstract: The invention relates to a device for recovering hydrocarbon vapors in fuel delivery systems comprising a proportional throttle valve which is mounted in a vapor recovery line to a tank, with the valve being controlled by an error signal which is a function of the fuel volume flow and the vapor volume flow. Accordingly the vapor volume flow returned by a vacuum pump to the container is controlled. The invention further relates to the structure of the proportional throttle valve, including a tandem piston arrangement.

Abstract: A tank vapor vent valve assembly mounted to the top of the tank wall has a piston actuated by a source of engine vacuum which maintains a fill vapor exit closed until the gas cap is removed to relieve the vacuum and allow the piston to open.

Abstract: A gauge block assembly for use in conjunction with the refilling of high pressure gaseous oxygen cylinders. The gauge block is used in an oxygen transfill header or manifold and includes a gas transfer control unit that allows rapid evacuation of the spent oxygen cylinder but that prevents rapid refilling of the oxygen cylinder with fresh oxygen. The gas transfer control unit includes a valve assembly having a restricted orifice therethrough. During the evacuation process, the check valve opens, bypassing the restricted orifice, to allow rapid evacuation of the oxygen cylinder at a first rate of flow. During the refilling process, the check valve closes. The incoming oxygen must flow through the restricted orifice at a second rate of flow less than the first rate of flow thereby regulating the flow of oxygen.