Abstract: An actuator comprising an exterior housing having an outer wall with a product discharge outlet formed therein. The exterior housing also has a central post supporting a bore which communicates with both a product inlet and the product discharge outlet to facilitate the dispensing of product via the actuator. A base of the exterior housing has an annular skirt portion provided for engagement with a mounting cup during a button-on-filling process. At least a base of the skirt portion, provided for engaging with a mounting cup during a button-on-filling process, is formed from a softer material than a remainder of the actuator to facilitate sufficient deformation of the base of the skirt portion, during the button-on-filling process, to provide an adequate seal with a top surface of the mounting cup.

Abstract: An apparatus for charging pressurized aerosol cans with liquid is provided having a base for providing mechanical stability, a can support assembly for supporting an aerosol can being filled with liquid, and a can charging assembly having a can receiving element and including a liquid reservoir having a tapered bottom in fluid communication with a pump rod receiving aperture for receiving a main piston pump rod. The main piston pump rod has a linearly elongated shaft terminating at its lower end in a radially expanded head and a sealing ring receiving slot into which a pliable sealing ring is recessed.

Abstract: A pressurized package of paint additives is prepared by mixing water, emulsion, stabilizers and a propellant in a pressurizable container. This pressurized container is then sold to retail stores where a water borne paint composition is injected into the pressurized container and sold directly to the end user.

Abstract: Filling apparatus for filling a refillable aerosol package. The filling apparatus comprises a liquid container (1), a pump (2) with a power means (3), a nozzle (4) for passing liquid into the aerosol package (5), and a flow channel (6) for passing liquid from the liquid container into the nozzle. A control unit (7) is connected to the power means (3), a controlled valve (8) placed in the flow channel (6) before the nozzle (4), a flow meter (10) placed between the pump (2) and the valve (8), and a starter (11). The flow channel is provided with a flow restrictor (9) placed before the valve (8).

Abstract: A double chamber aerosol container capable of filling contents in the container upon cutting off open air has an inner sack, whose volume is reducible according to reduction of contents, formed with temporarily engaging portions. A housing to which a valve assembly is arranged is inserted in the inner sack where the temporarily engaging portions are temporarily engaged with a ring-shaped neck portion of an outer container. After propellant is filled in a space between the inner sack 1 and the outer container during this temporarily engagement, the inner sack is inserted in the outer container to form the double chamber aerosol container.

Abstract: A distributor for a product under pressure has a receptacle which defines a receiving volume. A valve having a springy press-on valve shaft and a non-return valve part is mounted on the receptacle. A passage through which the valve shaft may communicate with the receiving volume is provided. A valve seating section is arranged such that the passage is closed off when the valve shaft is in a rest position and is open when the valve shaft is pressed on. A flexible bag which defines an interior space is provided within the receptacle with the valve seating section outside the bag, and the bag is connected to the valve shaft by the non-return valve part such that flow of a pressurized medium may flow through the valve shaft toward the interior space, but reverse flow is blocked. Flow of pressurized medium out of or into the receptacle through the valve shaft may be obtained without releasing pressure from the pressurized bag.

Abstract: A device is disclosed for delivering insecticidal gel and other fluids from an aerosol can. The device has a first arm that docks to the aerosol can top. A second arm pivots relative to the first arm and has an adaptor tube that deflects the valve and forms a leak-proof connection channel for product being delivered from the can. The tube can alternatively be connected to a piston type tube (to refill it), or it can be linked to a delivery straw to directly deliver the fluid.

Abstract: Acetylene is stored at elevated pressure by charging with acetylene at elevated pressure a pressure vessel (typically a gas cylinder) containing carbonaceous adsorbent able reversibly to adsorb acetylene. The adsorbent has: (a) a specific micropore volume equal to or greater than 0.5 cm.sup.3 /g; (b) a specific mesopore volume equal to or greater than 0.5 cm.sup.3 /g; (c) a bulk density equal to or greater than 0.25 g/cm.sup.3 ; and (d) a surface area per volume equal to or greater than 400 m.sup.2 /cm.sup.3. Alternatively or in addition to (a) and (b) above, the specific volume of pores having a diameter in the range of 1.5 to 3.0 nm is equal to or greater than 0.3 cm.sup.3 /g, but the sum of the specific mesopore volume and the specific micropore volume should always be equal to or greater than 1.0 cm.sup.3 /g. Preferably, at least 75% of the specific mesopore volume is contributed by mesopores having a diameter in the range of 2 to 5 nm and at least 90% of the micropores have a diameter of at least 0.4 nm.

Abstract: A portable, manually operated apparatus for filling fluid into a fluid container, the container having a check-valve port for discharging fluid and for receiving fluid. A base member has first and second spaced-apart bores, and a third bore connecting the first two bores. A manifold has fluid supply and return passages connected respectively to the first and second bores. A fluid pump connected to the manifold supply and return passages is adapted, when actuated, to supply fluid under pressure to the fluid supply passage.

Abstract: A mounting cup having a plastic film or laminate provided on the top outwardly facing surface thereof, at least adjacent the pedestal portion of the mounting cup, for mating with a skirt of a spray button to provide a sufficient seal between those two components during charging of a pressurized container with a propellant. The perimeter dimension of the skirt is preferably sized to be slightly smaller than the perimeter dimension of the pedestal portion of the mounting cup so that the skirt is slightly expanded upon engagement with the mounting cup. Due to this arrangement, the skirt at least partially bites into the plastic laminate, provided on the top surface of the mounting cup, to provide the sufficient seal between those two components.

Abstract: In accordance with the present invention, the filling apparatus for charging a pressurized aerosol container with a liquid product utilizes a male injector depending from a liquid reservoir in conjunction with a female valve of the container. The aerosol can is positioned or adjusted between a can non-filing position and a filling position, and pressure selectively draws liquid from the reservoir to the can when in a filling position. A substantially cylindrical housing engageable with and extending from the reservoir has an axial bore for liquid communication with the reservoir. A valve control having a valve body disposed in the axial bore of the cylindrical housing and having a central opening in liquid communication with the axial bore, includes a hollow injector pin extending longitudinally from the valve body and concentrically arranged with the opening of the valve body and terminates with at least one aperture.

Abstract: The vaporizer comprises a casing (1A) of moulded plastics, an atomizing pump non-removably mounted in the upper part of the casing, and a plug (29A) mounted in the lower part of the casing. The plug (29A) is provided with channels (30A) through which the liquid product is loaded when the plug is in a first position (FIG. 1); when the plug (29A) is urged into a second position (FIG. 2) the channels (30A) are blocked to trap the loaded liquid product in the casing.

Abstract: Apparatus for injecting material into an aerosol spray can that includes an improved can and pumping cylinder support arrangement. The arrangement simplifies the steps necessary to load and unload a can and offers a simplified construction for improved durability. The disclosed apparatus is compatible with cans of different size and affords a cabinet to contain the pumping process.

Abstract: A filling apparatus comprising a device (4) for connection to a source of water under pressure and a nonreturn valve (7) placed in fluid communication with the device (4) and mounted to allow passage from the source toward the reservoir (2), a calibrated valve (7) mounted between the nonreturn valve (7) and the reservoir (2) in the passage of water entering the reservoir (2), this valve (10) being sensitive to the pressure established in the reservoir (2) so as to cut off the water supply to the reservoir (2) when this pressure reaches a predetermined value.

Abstract: An adapter is disclosed for a can filling machine permitting the machine to be utilized to fill aerosol cans having a "female" type discharge valve. The adapter includes a fill head which is threadably attached to the paint reservoir of the can filling machine permitting the injecting piston of the can filling machine to be received within the working bore of the fill head. A valve engaging member is threadably attached to one end of the fill head and a spring therein biases a ball against a passageway in the bottom of the working bore. The other end of the valve engaging member has a "male" tip formed thereon which is received within the "female" type discharge valve in the aerosol can and depresses a valve body therein. Depression of the valve body within the "female" type discharge valve by the "male" tip of the valve engaging member permits paint within the working bore of the fill head to be injected into the aerosol can.

Abstract: A refillable distributing container for liquid media, particularly an aerosol can, has two valves, whereof an upper valve is constructed as the distributing valve (5) for exclusively distributing the container content. The second valve is constructed for filling the container both with liquid medium and with pressurized gas. The invention also relates to a filling device for refilling the distributing container and a process for the same. The filling device has a filling connection (9), which is connectable with the distributing container filling valve (8). The liquid is preferably forced in to the distributing container with the aid of the pressurized gas.

Abstract: A dispenser having a manually-operated dispensing valve assembly has a container for accommodating a spray product. The bottom of the container has a recess adapted to cooperate with a tube used to deliver air under pressure from an air pump into the container. The container includes a check valve which allows air to flow into the chamber of the container and prevent the flow of air out of the chamber of the container. When the container is placed on the air pump, it actuates a switch which energizes an electric motor which drives a pump for supplying air under pressure which is directed to the tube and into the chamber of the container past the check valve.

Abstract: A method of filling and proof testing pressure vessels, such as hybrid air bag inflators, with gas. A method of filling a pressure vessel where the volume and temperature of the gas going into the vessel are controlled to ensure a consistent fill mass. By setting the controlled temperature high enough to cause this fill pressure to exceed the required proof pressure, the vessel can be sealed immediately after filling and the pressure will decrease as the contents cool. If a required hold time is specified in connection with the proof test, the temperature can be set high enough to allow for cooling of the contents during the hold time. The need for a separate proof test step is eliminated and cycle time is greatly reduced.

Abstract: In order to provide a simple and reliably operating filling apparatus, particularly for pin-index gas bottle valves there is proposed a housing, a through opening formed in the housing for displaceable reception of a corresponding gas bottle valve, a filling union section fixed to the housing and opening into the through opening by way of a sealing neck, and a displacement member by means of which the sealing neck can be connected to a gas bottle valve located in the through opening.

Abstract: A closure cup for interfused connection with a pressure dispenser. The pressure dispenser is of the type having an essentially rigid and pressure-resistant outer container made of a fusible and preferably thermoplastic synthetic organic polymer composition, such as a polyester or polycarbonate. The closure cup is made of a synthetic organic polymer composition capable of interfusion with the polymer composition of the outer container and is adapted for receiving and holding a valve assembly made up of a valve housing and a displaceable valve outlet. The closure cup is closed after pressurization of the complete dispenser structure. Such closure is capable of interfusion with the material of the closure cup so as to form a sealing closure by interfusion having substantially the same physical and chemical characteristics, notably resistance against aging and migration of the pressurizing medium, as the closure cup.

Abstract: An apparatus for filling a pressurized can is provided that includes a pumping assembly having a piston for driving a liquid into the can. A cabinet encloses the pumping assembly and has a door which provides access to the pumping assembly. A first embodiment of the apparatus includes a manual lever arm assembly for driving the pumping assembly. A second embodiment of the apparatus includes a powered pneumatic cylinder for driving the pumping assembly and a control circuit for cycling the pneumatic cylinder. Preferably the control circuit includes a control valve for alternately supplying pneumatic fluid to upper and lower spaces of the pneumatic cylinder and a pair of accumulators for alternating the control valve. A third embodiment of the apparatus includes automatic means controls for driving the pumping assembly a selected number of piston cycles.

Abstract: A reusable high efficiency propellant driven apparatus for the dispensing of liquid products, featuring a refillable product container, and a rechargeable propellant housing. The propellant housing may be moved from container to container, to dispense a plurality of products; and a non-completely dispensed container can have the product exhausted by the replacement of a spent propellant housing, with the same or a different housing that does contain propellant. The housing is disposed concentric to the container and preferably both are secured to a single cap. A dual piston construction is employed to provide a hermetically sealed propellant housing. Product and propellant deployment is controlled by the movement of a pair of gaskets.

Abstract: The closure of the bottle is achieved with the aid of a cylindrical ring (20), the base of which is closed by a membrane (22). This ring (20) is put in place together with a filling adaptor which is screwed onto the neck of the bottle and which allows the ring (20) to be tightened after filling. A drawing-off adaptor is also designed to be screwed onto the neck of the bottle and includes a bevelled drawing-off tube intended to pierce the membrane.

Abstract: A portable electrically operated compressor system for pressurizing and repressurizing containers with compressed air. The system has two primary positions: A compressor position which has a single compressor motor switching mechanism which both activates the compressor motor and turns it off when the desired pressure level is reached and, designed to mate with the compressor system, a container position having an air inlet valve.

Abstract: A packaging container of the aerosol type, which can be recharged with compressed gas, comprising an outer casing capable of being connected with a filling adaptor provided at its outer end with means for connection to a compressed gas source and connected on the inside to a filling tube whose free end opens inside the casing of the container above the level of the liquid contained in the latter.It comprises, mounted at the free end of the filling tube (7), a sealing device (9) arranged in the form of a case (10, 14) comprising a chamber (19) delimited between a lower wall (11) and an upper wall (15), the chamber communicating with the internal volume of the casing through at least one orifice (16) made in the upper wall (15), and with the filling tube (7) by orifices (12) made in the lower wall (11) outside a central part of the latter, and, inside the chamber (19), an elastic diaphragm (20) immobilized in its central part against the central part of the lower wall (11).

Abstract: An aerosol dispenser filling apparatus in which a liquid, such as paint, containing cylinder (24) is removably mounted above an aerosol can receiving position above the cylinder into the cylinder which has an upper flared or expanded extremity (26) to guide the piston into the cylinder. The aerosol can (46) is connected to the bottom of the cylinder so that the liquid is forced from the cylinder into the can.

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 pharmaceutical aerosol spray for treating an angina attack including a container having a liquid composition therein comprising 0.1 to 2 weight percent of nitroglycerin, 2 to 60 weight percent of ethanol, 2 to 60 weight percent of propylene glycol, 10 to 50 weight percent of dichlorodifluoromethane and 30 to 70 weight percent of dichlorotetrafluoroethane, the container having a valve assembly sealed to the container around an opening in the container by a sealant material which has a nitroglycerin absorption value less than 10 mg/1 g of sealant material.

Abstract: Uniform dispersion of mixtures of gases of different densities in gas vessels is rapidly attained by introducing the gases into the vessels in the order of their increasing densities while the vessels are in the upright position. When the quantities of the denser gases are small relative to the quantity of the least dense gas the gases are preferably metered into the vessels by pressure measurements, with the final pressures of the more dense gases being determined by differential pressure gauge measurements.

Abstract: The application describes a method of introducing into a container a suspension or solution of a material in a propellant held under pressure, in particular a pharmaceutical material. The method comprises the steps of bringing a filling head into communication with the container; introducing a quantity of such suspension or solution into the container through the filling head; introducing a quantity of high pressure propellant without any of the said material into the filling head, thereby to flush through any suspension or solution remaining in the filling head; and withdrawing the filling head from the container. An apparatus and a filling head for carrying out the method are also described.

Abstract: A device for pressurizing an aerosol can (11) in order to refill it with propellant gas (10) comprises a housing (12) containing an air compressor (14) which consists of a cylinder (15), a driving motor (16) and a plunger, a filling nozzle (18) for injecting pressurized air into the aerosol can, a mechanism for activating said compressor when a can is fitted to the filling nozzle, and a mechanism for deactivating said compressor when the air injected into the can reaches a predetermined pressure. A coupling member is provided for coupling the device and the aerosol can when the latter is positioned in a seating (17).

Abstract: A system cleans or dusts devices, such as optical or photographic equipment or the like, with pressurized air from a chamber. The chamber is filled with air through an air inlet valve which may be connected to an air pressure source, such as a conventional tire pump, or may have a built-in pump connected thereto. As a result, when air is depleted from the chamber, the chamber may be re-filled for repeated use of the system.

Abstract: A disposable pressure container is provided with a combined filling and removing valve which comprises a valve body (11) which is slidably guided in a bore of a valve housing (8) and pressed by a resilient force against a valve seat and which is liftable from its valve seat during filling and removing operations. Furthermore, the valve has a second valve body (22) which, before the container is filled for the first time, is spaced from its valve seat (16) by a surmountable and fluid-permeable barrier (17, 18). After the container has been filled, the second valve body (22) is pressed beyond barrier (17) and forms, together with its valve seat (16), a check valve which prevents container (1) from being filled anew. To produce an inexpensive valve, valve housing (8) is made integral with a first bore (10) for receiving the first valve body and a second bore (15) for receiving the second valve body (22) made of a plastic material.

Abstract: A process for preparing a medicinal aerosol formulation containing a propellant that is gaseous at standard temperature and pressure and filling the formulation into a metered dose aerosol canister. The process involves mixing the propellant and the drug at ambient temperature and under pressure sufficient to liquify the propellant to afford a formulation. The formulation is cooled to a temperature sufficiently low to liquify the propellant at atmospheric pressure and filled into aerosol canisters in an environment of controlled humidity. An aerosol valve is placed on each aerosol canister and the finished canisters are removed from the controlled environment.

Abstract: A flexible closed plastic pouch forming an expulsion means for supplying dispensing pressure, holding a product, closed by an aerosol valve. A plurality of pocket members disposed at spaced positions within said pouch with their openings facing the interior of the pouch. Each pocket member having an extension of a predetermined length attached at its end to the interior of first of two facing wall members of the pouch. Each pocket member enclosing a predetermined quantity of first component of a two-component gas generation system and being releasably closed by one of a plurality of closure members, each of said closure members having an extension of a predetermined length attached at its end to the interior of the second of the two facing walls of the pouch.

Abstract: A manual precompression pump for spraying or dispensing a fluid substance contained in a receptacle, said pump having a pump body (1) in which a hollow piston (2) slides the piston being extended by a hollow rod (3) including the seat (7a) for a closure valve member (6) urged towards said hollow rod by a spring (10), said spring pushing the valve member (6) and the piston (2) towards a rest position, said pump including a pump chamber (12) which is in communication with the receptacle when the valve member and the piston are in their rest positions, said pump chamber (12) being capable of being isolated from the receptacle by sealed interfitting of a first cylinder (8) integral with the valve member (6) and of a second cylinder (4) integral with the pump body, said pump being characterized in that a valve rod (7b) extends the valve member (6) through the hollow rod (3) to a distance H1 beyond the outside end of the hollow rod, and in that starting from the rest position of the valve member, the cylinder (8) i

Abstract: A twin-chamber container which includes an outer plastic container with a valve mounted thereon and an inner collapsible container mounted in communication with the valve. A space between the container is pressurized to collapse the inner container when the valve is opened for permitting the dispensing of material from the inner container. A flowable resin is located in the space between the containers where it hardens at the area of the opening in the outer container having the valve arrangement for forming a seal. A method for preparing a twin-chamber container, ready to be filled with a product, involves pressurizing the intermediate chamber between the outer container and the inner collapsible container with a gas and transporting the twin-chamber container with the pressurized intermediate chamber to a filling station for filling a product into the inner container through the valve of the container.

Abstract: The cabin is integral with a shield which separates it from the working environment and which can replace a perimetral part of the wall or the like which separates said environment from the outside. In correspondence with said shield the cabin comprises a sealed (by suitable seal gaskets), flameproof and explosion-proof door providing access from said environment and comprising an armoured viewing window. On the side opposite that comprising the door the cabin has a movable wall which is hinged and ejectable. In the walls perpendicular to the preceding there are apertures or passageways for the entry and exit of the can conveyor. Analogous apertures or passageways are provided in the shield, these being at least partly closable by guillotine plates when required. In the region in which the conveyor extends in the open between the shield and cabin, means are provided to direct air streams onto the cans.

Abstract: An apparatus for filling aerosol packages. The aerosol package includes an outer pressure resistant shell having an opening in the upper end and a resilient container is disposed within the shell as an inlet sealed within the opening of the shell. A valve unit is disposed in the opening and includes a valve. A propellant gas is located in the space between the shell and the container. The filling apparatus includes a reservoir of liquid and a nozzle communicates with the reservoir. The nozzle is inserted in the valve unit and acts to open the valve and a force is then applied to the liquid in the reservoir to transfer the liquid from the reservoir to the container within the aerosol package.

Abstract: A CO.sub.2 gas generator for an aerosol device is located in a housing and chemically generates CO.sub.2 from a chemical reaction between two reagents contained within a common container. The reagents are located in different chambers of the container with a CO.sub.2 accumulation region being included in one of the chambers. A reference pressure source of a predetermined pressure forces the two reagents into contact with each other when the pressure of gas in the CO.sub.2 accumulation region is less than the predetermined pressure whereupon CO.sub.2 is generated in one of the chambers. An output conduit in fluid communication with the CO.sub.2 accumulation region is provided to withdraw the generated gas from the generator. As the CO.sub.2 is withdrawn, the gas pressure drops permitting more mixing of the reagents. When the CO.sub.2 pressure becomes equal to or higher than the predetermined pressure applied by the reference pressure source, the reagents become separated again and gas generation ceases.

Abstract: A liquid dispensing apparatus comprises a container having a peripheral sidewall, a bottom wall mounted at a lower end of the sidewall and a closure removably mounted to an upper end of the sidewall. A flexible tight plastic bag is mounted at an upper end thereof between the closure and the sidewall in order to hang in the container. The bag thus defines in the container a first and a second chamber which respectively contain the liquid to be dispensed and compressed air. A nozzle extends through the closure into the first chamber. A pressure regulating valve is mounted in the second chamber and defines therein an upper and a lower sub-chamber, with the bag being submitted to forces exerted by the compressed air contained in the upper sub-chamber. The pressure regulating valve ensures a constant pressure in the upper sub-chamber and thus on the bag, whereas the lower sub-chamber acts as a reservoir for the upper sub-chamber.

Abstract: A secure control system for delivery, dispensing and inventory of several liquid fluids (products). A stocked liquid delivery vehicle 100 provides coordinated and measured filling of liquids through a site dispensing subsystem 200 to site storage containers 302. The liquids from the storage containers are subsequently delivered under inventory control, and in measured amounts, back through the fill lines to the dispenser. The dispenser CPU records the amounts of each liquid dispensed to each user through various spouts 224. Users are identified by a code number entered into the dispenser unit via a keyboard 208 or card reader. The dispenser CPU 202 contains program information to identity authorized users of the system. The system respnds to user solicitation of liquids by verifying the user's identity, querying as to which liquid is desired, the amount desired (if variable) and enables a control switch/indicator 232 to indicate the dispensing port 224 and readiness.

Abstract: A valve device useful for obtaining a predetermined and immediate appreciable initial rate of flow of aerosol from an aerosol container and a subsequent predetermined and small continuous rate of flow. The valve device contains a standard valve, which is crimped on the aerosol container, and a unidirectional valve, located within the aerosol container and connected on one side to the standard valve, the connecting element providing a passage from the unidirectional valve to the standard valve, and on the other side to a conduit connected to a plunger tube for access to the contents of the container. Within the body of the standard valve is a movable closure element having a spring which holds the valve closed. The valve may be opened by depressing the spring with an actuator located outside the container. A closure member is provided for acting on the actuator. The closure element of the unidirectional valve is a movable diaphragm which is held closed by a second spring.

Abstract: A spray head for use with a receptacle containing a liquid which is maintained under pressure by a propellant gas, thereby enabling a product to be packaged so that it is protected from coming into contact with the air, the spray head being of the type comprising a manually-operated precompression pump which includes a pump chamber comprising first and second cylinders (11, 15) capable of engaging telescopically, the chamber being closed by relative displacement of the cylinders, said first cylinder being integral with the pump outlet valve and being provided at one of its end with a circular sealing lip (12) capable of engaging against and of sliding along the wall of the second cylinder, which second cylinder is in communication with the inside of the receptacle, the wall being provided at at least one of its ends with relief (18) such that when the sealing lip lies over the relief and the relief causes sealing to be broken, a passage is opened suitable for passing gas at a rate of flow which is sufficient

Abstract: Device for the compression and storage of air comprising, on the one hand, a reservoir (1) provided with an air discharge head (5) intended for cooperation with a container to be charged with compressed air and, on the other hand, at least one compression chamber (C1), associated with air inlet valves (19) and air ejection valves (15) and with a compression element actuated by a motor means (13) compressing the volume of the chamber (C1) between a maximum volume and a minimum volume, the ratio between the maximum volume and the minimum volume of the said chamber (C1) being from 1.2 to 20.

Abstract: The invention relates to a receptacle for dispensing a viscous substance. A receptacle body contains resilient structure bearing against the inside wall of the receptacle body. This structure comprise first and second spring-forming resilient blades with a reservoir made of flexible material placed between the inside faces thereof. An external return spring acts on the outside faces of the springs. The invention is applicable to making a receptacle for dispensing a viscous substance without using a propellant gas.

Abstract: A gas cylinder having a valve on one end and an internal tube having at least one perforation. The tube extending from the valve through the majority of the length of the cylinder. A charging and a gas delivery method employing the perforated tube permits the gas or gases to be mixed.

Abstract: The invention concerns a process for the production and packaging of a bag-type dispenser comprising a casing surmounted by a dome, a sealed flexible bag fixed in said casing and dispensing means sealingly connected to said dome and to said bag characterized in that, prior to any other assembly and packaging operation, a dome of plastics material is produced by moulding, the dome comprising an internal tubular portion permitting sealing fixing thereon on to the upper end of a skirt forming the blank for the bag, and then said fixing is produced, thus providing a preassembled component, dome+skirt, the dome further comprising portions for fixing thereof respectively on to the upper end of the casing and to the dispensing means. The invention also concerns the resulting sub-assemblies and bag-type dispensers. The invention is used in the pharmaceutical, cosmetological, hygiene and foodstuff fields.

Abstract: A supply of a propellant gas is maintained at substantially uniform temperature and pressure. Uniform predetermined increments of the propellant gas are withdrawn in rapid succession and rapidly introduced into aerosol containers in which product to be dispensed has already been introduced. Such containers are subjected to ultrasonic frequency agitation during the introduction of the propellant thereby enhancing the speed of introduction. The propellant may be introduced into a container either by the "through-the-valve" method or by the "under-the-cap" method at conventional speeds using known commercial equipment.

Abstract: The invention relates to a dispensing valve comprising a body formed of a cylindrical casing of rigid material closed by a cover, in which two seals having fluid-tight joints create a lock chamber inside which moves an atomizer provided with a sliding distributor, guided at its ends, which a return spring placed upstream urges towards the cover. The valve has a sleeve allowing alteration of the volume of the chamber and a front seal formed as a separate member, both formed of semi-rigid plastic material. The seal is disposed immediately adjacent an abutment surface formed in the casing. The design is such that entry of liquid during filling takes place through an auxiilary duct and the front seal and sleeve may be formed as a single member if desired.