Abstract: A quick release aerator is provided for discharging intermittent bursts of pressurized air into a storage container to implement material flow. The unit includes a piston and valve assembly disposed internal to a pressure tank. The assembly features one or more vent ports defined through the sidewalls of a cylinder to allow the passage of pressurized air from the tank to an outlet orifice. The total area of the vent ports equals or exceeds the area of the exhaust port, thereby maximizing the effect of the burst of pressurized air.

Abstract: The invention relates to a gas flowrate adjustment and limitation device for a liquefied-gas lighter of the type having at least one compressible element traversed by the gas, and means of compressing this element to a greater or lesser degree depending on the desired flowrate. This device is characterized by having a permeable disk 12, the periphery of which is in contact with a coaxial permeable crown 7, by the gas passage in disk 12 and crown 7 being substantially radial, and by essentially the total surface area of each of the outer surfaces of said disk 12 and said crown 7 being in contact with some element of the device or lighter.

Abstract: A method of accurately measuring volume of gas flowing through a conduit as a result of differential pressure of the gas within the conduit is disclosed. The method comprises determining flow of the gas through the conduit, and terminating flow of the gas through the conduit when the differential pressure is a preselected value. The gas flow and the resulting determination of gas volume are preferably referenced to standard temperature and pressure. Also disclosed is an apparatus for effecting the method.

Abstract: A heat activated dispenser is disclosed which is suitable for dispensing into the ambient a variety of materials including medicaments, insect repellants, odor maskants, and the like. The dispenser is formed from compacted diatomite shaped to fit around and receive heat from a heat source such as a light bulb. The diatomite is charged with a vaporizable material which is released into the ambient in a gaseous state when heat is applied to the dispenser. A method of dispensing a vapor into an ambient comprising providing a volume of material having a vaporizable material therein and applying heat thereby causing said vaporizable material to be dispensed into the ambient atmosphere.

Abstract: A natural gas fueling system is set forth for filling one or more vehicle tanks from a supply such as a storage tank or a main gas line. The system includes at least one hose assembly having one end adapted to connect to a tank and the other end having a female coupling. Also included is a dispensing assembly having a manually operated valve to control the flow of gas from supply. Connected to the valve is at least one male coupling adapted to be releasably received by the female coupling. The male and female couplings permit the hose assembly to be pulled and disconnected from the dispensing assembly to prevent damage to the hose or dispensing assembly. Additionally, the couplings are provided with check valves to stop the flow of gas when disconnected. A vent is provided to vent any leaking gas as is a locking structure to lock each hose assembly to prevent unauthorized use.

Abstract: A refillable pressure spray container comprises a container having a filling and dispensing nozzle extending outwardly from a cap secured thereon, the nozzle being received in a quick disconnect coupling attached to a motor-driven pump. The quick disconnect coupling has a valve actuating member to raise a valve plunger in the nozzle when inserted into the coupling to establish communication between the pump and the interior of the container. The motor pumps air or gas under pressure into the container. At a predetermined container pressure, a relief valve deactivates the pump. When the container nozzle is removed from the coupling, the plunger closes communication between the container and the pump to pressure seal the contents within the container. A conventional spray nozzle is attached to the plunger for using the refillable container as a conventional aerosol container.

Abstract: A compact, light weight fluid flow control device adapted to be interconnected between a source of fluid under pressure and a normally stowed inflatable system such as a safety slide or flotation unit. The device uniquely initiates fluid flow between the source and the inflatable system by means of either a pyrotechnic device or a redundant mechanical system. Once fluid flow has been initiated, the device uniquely regulates and controls the flow of fluid toward the inflatable system.

Abstract: This device, which is in particular intended to inject liquid nitrogen in preserving cans so as to pressurize them, comprises an inverted cryogenic container (1,2) having a neck (3) closed by a detachable plate (10). All the elements (11,12,14,19,21) for operating the device extend through this plate in a sealed manner. The pouring conduit (14) has a calibrated orifice (17) mounted in the plate (10) and, above the latter, an electrically-operated valve immersed in the liquid. Application in the packing of flat beverages in metal cans.

Abstract: An apparatus and associated method for relieving the pressure within a high pressure tank having an opening plugged by a broken safety valve of a special type utilizes a mechanism acting between the annular flange of the tank normally provided for the securement of a valve protector cap and the valve to permit pressurized contents confined within the tank to escape through the valve. The special valve includes a flow passage in axial alignment with the tank opening in which the valve portion is received and defines a ball chamber in which a spherical ball is seated. The apparatus of the invention includes a stem which is movable through the valve portion flow passage for engagement with the spherical ball to thereby unseat the ball and open the valve flow passage. By unseating the ball, contents of the tank pass out of the valve flow passage and are directed either into the atmosphere or another vessel for reclaiming purposes.

Abstract: A closing and filling unit having a piston valve (22) whose closure member (28) is provided with axial openings. A rotatable and slidable element (32) is provided for actuating the valve. Arrangements (35, 40, 41, 33, 36) are provided for utilizing the pressure of the fluid to force the element (32) into engagement with the piston (28). The device is adapted to be detachably fixed to the body of the valve by means of a screw-threaded boss through which extends an actuating rod (37) which is rigid with a piston (36) sliding in a chamber (33).

Abstract: A propellant augmented, gas dispensing device is charged with a pressurized gas during assembly by inserting the gas in its solid form into the pressure chamber and thereafter sealing the pressure chamber. The gas is chosen so that it is in its gaseous state at normal ambient conditions. In another aspect, an improved pressure relief assembly includes a burst disc affixed to a flow passage between the pressurized gas chamber and the propellant chamber for normally preventing flow through the passage. In its preferred form, the burst disc carries an annular score line. A support member is provided on the propellant side of the burst disc and is placed in supporting contact with the burst disc adjacent the score line. The support member has a central opening communicating with the passageway to the propellant chamber. The score line is located outwardly from the central opening.

Abstract: Gas bottle valve incorporating a gas bleed-out device, particularly for use on gas operated motor vehicles, with a body having a gas delivery conduit of substantially T-like configuration. The conduit is provided at ends of respective coaxial branches with threaded fittings for gas delivery lines and opening, via a crosswise branch to the former.

Abstract: This device is of the type having a permeable elastic disk (13) disposed in a circuit supplying the burner with gas and subjected to compression by two elements activated by the same control element, an annular compression element (17) and a central compression element (20). According to the invention, control element (31) is mounted to slide between two positions, a presetting position wherein it is coupled rotationally with annular compression element (17) and a setting position where it is decoupled therefrom.

Abstract: An easily manipulable, high mechanical advantage latching-actuator apparatus for high pressure gas cylinders is provided which employs a single, bidirectionally rotatable operating collar for latching, on-off gas valve operation, and delatching, so as to facilitate gas therapy and cylinder replacement by patient users. In preferred forms, the apparatus includes a slotted valve body affixed to a gas cylinder, along with a separate actuating assembly including a rotatable operator and a reciprocable valve actuator; locking tabs are secured to the operator, and a cam mechanism is used to couple the operator and the valve actuator. Rotation of the operator in a latching direction serves to first move the tabs into latching engagement with the body slot, whereupon, after further rotation of the operator in the same direction past an intermediate "off" position, the valve actuator is cammed into an "on" position for opening the valve carried by the body, thus permitting gas flow from the cylinder.

Abstract: A combination safety and service valve including a body having a sealing portion for closing an opening in a high-pressure tank and an external portion which, when the sealing portion closes the tank opening, is positioned externally of the tank utilizes a ball chamber in its flow passage and a spherical ball loosely received in the chamber for preventing the escape of contents of the tank if the external portion were to separate from the sealing portion. The ball chamber is adapted to sealingly accept the ball at its outlet end, and the ball is of such size that a pressure differential across the ball chamber urges the ball into sealing engagement with the ball chamber outlet. A stem associated with the external portion of the valve body prevents the ball from engaging the chamber outlet end until the external portion is separated from the sealing portion.

Abstract: A gas generator or inflator particularly for the inflation of inflatable protective bags that are used in vehicle safety systems includes first and second aluminum structural components. The first component, a diffuser shell having outlet ports, includes integrally formed concentric cylinders which define chambers containing ignition materials, a solid gas generant composition and filters and provide ports for the passage of generated gases from chamber to chamber and then through the outlet ports. The second component, a base shell, has an attachment flange, includes an initiator, and is provided with three concentric surfaces that mate with the ends of the concentric cylinders of the first component. The three concentric cylinders of the first component are simultaneously joined with the concentric mating surfaces of the second component by a single inertia welding operation.

Abstract: This invention relates to an improved attachment for a propane/butane fuel container of the aerosol type to provide torches, burners, heaters, lanterns, and the like. In one embodiment the attachment itself includes a torch and control valve, while in other embodiments it is an adaptor to connect conventional or separate devices to the container. The attachment has a cylindrical boss with a central well which screws onto the threaded stem portion of the fuel container to an assembled position in which an actuator pin opens a self-sealing outlet valve in the container. The attachment has a first O-ring seal seated inside the well and a second O-ring seal seated around the inlet boss just below an outwardly extending shoulder. As the assembly is tightened into position on the fuel container, these two O-ring seals are simultaneously compressed, the first against the upper surface of the stem portion and the second against the annular rim of the container.

Abstract: A gas dosing device for medical apparatus uses electrical control signals for connecting a gas supply under pressure through a pressure reducer to an outlet which is connected to the use load for the gas. The device includes a buffer connected between the gas source and the outlet and a reversing valve connected to the buffer and to the outlet. A pressure valve connected to the buffer and to the outlet. A pressure chamber is connected to the buffer and a measuring chamber is connected to the reversing valve. A differential pressure transducer has one connection to the pressure chamber and another to the measuring chamber and thus receives a differential of the pressure between these chambers.

Abstract: A valve having a valve housing for mounting on a high pressure fluid container. A cartridge is mounted in a fluid conduit in the valve housing leading to the fluid container. A metallic disc is crushed by the cartridge against a valve seat in the conduit to provide a reliable lasting seal. Opening of the valve is provided by releasing a trigger pin connected to a latch in the cartridge for removing a support from a portion of the disc permitting it to rupture under the high pressure and communicating the high pressure gas to a pressure regulator chamber in cross configuration with the valve conduit in the valve housing. A pressure regulator member in the chamber controls the size of a discharge orifice for lowering the pressure and introducing the gas into an inflatable body. Filling of the high pressure fluid container may be done by introducing high pressure fluid into the regulator for passage into the fluid conduit of the valve with the cartridge carrying the disc spaced from the valve seat.

Abstract: A fuel fume generator kit with a fuel tank having a fuel entry chamber and a vacuum chamber separated by a baffle, said baffle having apertures defined at the bottom thereof to allow the fuel to pass from the entry chamber to the vacuum chamber; means to heat the fuel in said tank; means to provide vacuum to the vacuum chamber to cause the fuel therein to create fumes; means to carry the fuel fumes to pressure means to be then pressurized in a line extending to the device in which the vaporized fuel is to be burned having on the pressure line a reserve tank to build up and contain a pressure therein to help maintain a constant pressure at the device where the fuel is to be burned; and a pressure switch controlling the pressure in the pressure line interconnected to the pressure means with a pressure relief valve operated at a set pressure level on the pressure line near the device to be operated.

Abstract: A gas compressor has at least one closed container with gas inlet means for filling the container with a gas to be compressed and gas outlet means through which compressed gas can leave the container. When the container has been filled with gas to be compressed, a fluid is forced into the container to compress the gas therein and force it out of the container. After the container has been filled with fluid and the gas forced therefrom, the fluid is drained while gas again enters and fills the container. The output of the container is generally connected to a gas storage tank and the cycle of filling the container with gas and then expelling it is repeated until a desired pressure of gas is obtained in the storage tank.The compressor is particularly suited to filling a storage tank, such as a natural gas storage tank in a vehicle, over an extended period of time of several hours.

Abstract: A propellant augmented, gas dispensing device of the type that includes a propellant chamber coupled to a pressure vessel containing a pressurized gas and exhaust passage from the propellant chamber incorporates an additional depressurization vessel coupled in fluid communication with the exhaust passage from the propellant chamber. The depressurization vessel has a restricted exhaust passage. The exhaust passage from the propellant chamber is constructed to allow a relating high flow rate from the propellant chamber into the depressurization chamber, permitting rapid depressurization of the propellant chamber to assure propellant extinguishment. At the same time, the restricted exhaust passage from the depressurization vessel permits controlled metering of the outflow of pressurized gas from the dispensing device.

Abstract: A multiple blast aerator hopper system for handling bulk material. A plurality of blast aerators are fitted at radially spaced-apart intervals about the periphery of the hopper; the first blast aerator is positioned near the bin outlet, and each succeeding aerator is usually vertically elevated thereabove. The blast aerators are periodically fired in a timed, rotary sequence starting with the first, lowermost aerator and continuing serially with higher, radially spaced-apart aerators. Preferably each aerator includes an internal valve seat assembly which houses a resilient, dual diameter piston for axial movement between the sealing position and a rearward, aerator fill position. An external solenoid valve controls each aerator. Preferably the blast discharges of each aerator are directed downwardly, tangentially with respect to the walls of the bin or hopper on which the system is mounted.

Abstract: A fluid flow valve having a rigid tube associated therewith for extending into a tank. In one embodiment, an on-off gas valve includes an extension threadedly mounted thereto with an insert positioned between the extension and valve. A passage extends from the valve through the insert and extension to a rigid tube attached to the extension and a flexible hose attached to the tube. A spring biased safety valve has a stem slidably mounted to the insert and is operable to close the passage in the insert preventing fluid flow. In another embodiment the tube is attached to an insert positioned in the tank passage receiving an on-off valve.

Abstract: A valve for a pressure bottle or vessel adapted to contain a dangerous fluid, such as a radioactive gas, can comprise two valve members in tandem which require actuation by separate operating members thereby eliminating the possibility for accidental or inadvertent opening. The main valve housing can be provided with a pressure equalization valve which opens when the bottle is immersed in a body of water at elevated water pressures to equalize the interior and exterior pressures while providing a water seal against escape of the bottle contents.

Abstract: A valve for a liquefied gas lighter, which includes an expander-evaporator and a flow limiter for limiting flow of the liquefied gas to the expander-evaporator, the flow limiter including a rigid member, a deformable sleeve of a gas permeable material surrounding the rigid member, an elastically deformable element in contact with the sleeve, and a compression member for compressing the elastically deformable element and deforming it radially in the direction of the sleeve and the rigid member. The rigid member includes a support member for supporting the sleeve and the expander-evaporator, the elastically deformable member is an O-ring surrounding the sleeve, and the expander-evaporator is a deformable and permeable element whose permeability is varied by movement of the rigid member, effected through an adjustment member.

Abstract: A flash-back arrestor for dissolved acetylene cylinders wherein a cylinder gas-permeable at both ends thereof is joined to an inner end of a valve body in a dissolved acetylene cylinder in such a manner that said cylinder is communicated with a gas passage in said valve body. Filter plates are provided at upper and lower portions of said cylinder, and a packing consisting of a non-combustible granular material is inserted in the portion of the interior of said cylinder which is between said filter plates.

Abstract: A blast aerator for dislodging bulk materials in storage hoppers or the like. The blast aerator preferably comprises a rigid, generally cylindrical tank with a blast discharge opening coaxially aligned with its axis. A blast discharge assembly coupled to the discharge opening includes an elongated, one-piece, rigid discharge pipe of a predetermined internal diameter. A valve seat assembly is coaxially secured against an internal shoulder of the pipe. A resilient dual diameter piston is disposed within an intermediate portion of the pipe for axial movement between a sealing position wherein its reduced diameter portion abuts the valve seat assembly and a rearward, aerator fill position. The larger diameter portion of the piston axially tracks within the intermediate diameter portion of the discharge pipe. A valve cap assembly is coaxially secured at the end of the discharge pipe internally of the tank, defining a cavity between it and the piston rear.

Abstract: A valve for a cigaret gas lighter is comprised of a flexible gas conduit extending between a nozzle and a gas tank. The flexible gas conduit is pinched or bent to close the conduit. An operating member pinches or bends the gas conduit to close the conduit by a spring. A manually operable lever is provided to open the conduit by removing the operating member overcoming the spring force. In a preferred embodiment of the invention, the conduit is positively opened in addition to removal of the operating member when the gas lighter is to be ignited.

Abstract: The invention herein consists of an apparatus and method whereby containers such as syrup cannisters can be depressurized for disassembly and cleaning after use. The invention includes a relief head having a circular array of depending resilient, projecting members which are positioned to contact the dispensing valves of the containers and to allow air or other gases contained therein to escape.

Abstract: A blast aerator for fluidizing granular material, comprising a container connected to a supply of compressed air, an aerator valve casing having a diaphragm chamber therein, a flexible resilient diaphragm dividing the chamber into first and second portions, a conduit connected between the container and the first portion, an air blast outlet connected to an outlet port in the first portion, the diaphragm including a valve member initially closing the port by the resilience of the diaphragm, a bleed opening in the diaphragm for pressurizing the second portion when the first portion is pressurized, and a control valve for opening and closing a vent outlet from the second portion, the control valve when closed allowing pressurization of the second portion, and, when open, exhausting the pressure therefrom, whereupon the pressure in the first portion opens the valve member and quickly releases the compressed air from the container to produce an air blast through the outlet.

Abstract: A propellant storage construction having a chamber for storing propellant and a passage leading to the chamber and containing a valve unit therein for opening and closing the passage, the construction having a removable pressure regulator unit interconnected thereto and being operatively associated with the valve unit for operating the valve unit in relation to the pressure of the propellant having passed through the valve unit. One of the passage and the pressure regulator unit defines a generally conical seat adjacent the valve unit and on the side thereof opposite to the chamber and the other of the passage and the pressure regulator unit having a generally conical nose-like member seated in the seat to fluidly interconnect the pressure regulator unit to the passage downstream from the valve unit.

Abstract: A vehicle fire extinguisher is provided which discharges a copious supply of fire retardant into the engine compartment and in the vicinity of the fuel tank of the vehicle in response to a vehicle crash. The fire retardant deprives the areas of the vehicle most susceptible to fire of oxygen needed for combustion and fire development.

Abstract: There is disclosed a portable oxygen delivery system for use by a plurality of patients having a source of oxygen, at least one tube with capped ends to form an air-tight member and a plurality of valves connected to the tube. The valves are connected to the source of oxygen or medical oxygen applicators.

Abstract: A combined manual and pressure-responsive shut-off valve, intended particularly for use with high pressure gas cylinders, is disclosed. The valve includes a single seat and a single plug, the plug having a first sealing surface for closing against a low residual pressure in the cylinder and a second sealing surface for closing against a relatively high cylinder pressure. A pressure-responsive actuator engages the first sealing surface against the seat whenever pressure in the cylinder falls below a predetermined minimum. A manual actuator engages the second sealing surface against the valve seat to close against a wide range of pressures. The seat is specifically configured to conform to the plug. Means are provided for refilling the cylinder without removing the combined valve. In one embodiment, a special tool is provided for opening the pressure-responsive actuator. In a second embodiment, a bypass check valve is provided to allow gas to flow into the cylinder.

Abstract: An apparatus for controlling the volume of flow of a gas. A reference volume has an input conduit connected to the source of gas and an output conduit connected to a utilization device. Valves in the input and output conduits are cyclically controlled to permit pressure in the reference volume to reach a high and then to attain a low. The reference volume pressure is measured twice during each cycle to provide voltages representative of the high and low pressures. Circuit means control the time and duration of operation of the valves to cause the difference between the high and low pressures to equal a predetermined value.

Abstract: A combination of a pressure vessel for pneumatic fluids at pressures above 200 kilograms per square centimeter and a stationary mounting therefor, the pressure vessel having a neck which fits into a socket in the mounting and is retained therein by a locking mechanism, for example, a bayonet coupling or a polygonal flange on the neck passing through an aperture of the same shape in a flange in the socket. The neck contains a valve and the combination includes a mechanism for controlling the valve. Such mechanism may be in the neck or in the mounting and preferably comprises an axially movable valve operating member mounted by an external screw thread in a second member and coupled to a third member, such as a manually operable knob, by a coupling which transmits rotation, but not translation.

Abstract: The device for limiting the gas flow in a discharge valve for gas lighters for cigarettes of this invention comprises a portion (13) of reduced cross-section of the porous dipping element (7) which transfers by capillarity the liquefied gas from the tank to said valve. In this portion the fibers forming the porous dipping element (7) are so compressed with respect to the remainder portion of said porous dipping element (7) as to reduce the gas flow to a preset value corresponding to the maximum desired flame height.

Abstract: An aerosol inhalation device comprising an elongated chamber, an outer chamber part of which has an outlet opening and is telescopically displaceable over an inner chamber part which is connectable to an aerosol dispenser and provided with a flexible tongue which on telescoping the device together closes the outlet opening.

Abstract: A coin operated vending machine operable to compress air and dispense compressed air for a selected period of time. The machine has an air compressor drivably connected to an electric motor. An air outlet hose attached to an on-off valve is connected to the air outlet of the air compressor. A housing surrounds the air compressor and motor to prevent unauthorized access thereto. The housing has a doorway closed with a locked door. A coin actuated control located within the housing has a switch and a timer operable to connect the motor to a power source for a selected period of time. A sequence counter connected to the control functions to count the number of times that the motor is connected to the power source.

Abstract: An entirely mechanical air bag device for cars wherein a frangible lid seals a container having gas under pressure therein. The frangible lid is supported by a pressing lid in contact with a link mechanism. During a crash, an impact detecting assembly releases the link mechanism which in turn releases the pressing lid which permits the frangible lid to be fractured by the high pressure gas to inflate the bag.

Abstract: Apparatus for termination of cryogenic liquid transfer from a liquid supply container to a storage-dispensing container.

Abstract: A personal repellent device comprises a capsule having a perforated outer shell composed of a deformable material and a rupturable sealed inner container disposed within the outer shell and adapted to contain a malodorous and/or irritating and/or debilitating substance.

Abstract: A compact, economical electrically heated vaporizer having a fast response time and capable of vaporizing liquified petroleum gas at a rate of ten to forty gallons or more per hour with safety and without excessive superheating and/or cracking of the liquified petroleum gas utilizes a metal casting having a closed internal cavity separated into two chambers by an integral barrier. The casting serves as a pressure vessel and heat sink as well as providing a heated interface between electric resistance heaters received in passageways in the barrier and the liquified petroleum gas. The heat generated by the heaters is disseminated uniformly throughout the casting surrounding the chambers. The liquified petroleum gas inlet at one end of the casing connects with the end of one chamber. Multiple small passageways in the barrier at the other end of the casting connect the other end of the one chamber to the adjacent end of the other chamber.

Abstract: A device comprising a perforated housing containing therein pellets of a chemical composition which undergoes self-sustaining combustion with generation of a combustion gas and an initiator attached to the housing to ignite the pellets. To prevent breaking of the pellets resulting from their movements in the housing, a hollow and resilient retainer member is placed in the housing such that the initiator is exposed to the interior of the retainer and that the pellets are spaced from the initiator by the retainer and held under a compressive force by the resiliency of the retainer. The retainer has openings which allow a gas to pass therethrough but do not allow the pellets to pass therethrough. A helical spring and a perforated bellows are examples of the retainer.

Abstract: An automatic inflatable safety work vest in which a gas is automatically charged into a gas tight chamber forming a floating body upon contacting water, comprises a back part of the vest formed of a non-floating material, a floating body provided at the front of the vest and connected with stretchable bands to the back part and having a gas tight chamber, a pillow integrally formed at the upper portion of the vest which communicates with the gas tight chamber, the pillows being folded over and releasably attached to the outer surface of the back part and a gas charging device in communication with the gas tight chamber and connected to the floating body through a connector, the gas charging device being a flat cylindrical vessel provided with a gas outlet at the bottom surface, a pair of electrodes positioned oppositely and fixed at a side wall near an upper cover portion of the cylindrical vessel, an electric switch provided at the upper portion of the cylindrical vessel and connecting to the electrodes and

Abstract: An inhalation apparatus comprising an automatic pressure regulator including a body having an opening for receiving the valve of an oxygen tank and an outlet for a hose extending from the outlet. A valve is attached to the hose and includes a manual control for selectively varying the volume of oxygen passing through the hose to an inhaling mask on the end of the hose. The pressure regulator body includes two chambers, a passage extending from one chamber to the other, and an inlet passage extending to one chamber. Each chamber has a diaphragm closing one wall thereof and a spring yieldingly urging the diaphragm in one direction. An orifice is associated with the inlet and an orifice is associated with the passage. A lever is pivoted adjacent its respective diaphragm and has one end thereof pivotally connected to its respective diaphragm and the other end thereof engaging a valve associated with the respective orifice.

Abstract: A portable defense device combining a flashlight with a renewable, interchangeable cylinder containing compressed gas which may be used to generate a noise, to disperse dye and/or an odoriferous spray. The compressed gas may be stored in a canister which may take the form of a spray can having the typical articulated dispensing nozzle which is then received in an articulated throat assembly displaced to release the contents by a pivoted trigger engaging a pivoted arm assembly. In the normal state the trigger is aligned over the exit opening of the throat, thus protecting the dispensing nozzle from inadvertent release, and when released the trigger aligns to engage the arm.

Abstract: A storage system for a combustible gas comprises a collapsible container selectively connectable to a source of the gas and to a suitable discharge point together with means effective cyclically to produce controlled expansion of the container so as to enable gas to be transferred from the source for storage and to produce collapse of the container to enable stored gas to be discharged.

Abstract: A cryogenic breathing system comprises a storage container and a portable container. Both containers, include outer casings and inner containers having small connected openings at their top and providing an evacuable space between their outer casings and inner containers. Material to inhibit heat transfer through the evacuable space is included in this space between the outer casings and inner containers of both containers. The openings of both containers are closed with gas-tight closures fastened to their outer casings. The gas-tight closures can carry, through the single openings in the containers, means to withdraw oxygen for breathing, liquid level indicating means and a mechanical structure to protect the liquid level indicating means, means to admit or withdraw liquid oxygen from the inner container, and means to admit heat to the inner container, as may be desired.