Abstract: A valve assembly can automatically dispense aerosol content from an aerosol container at predetermined intervals without the use of electric power. A diaphragm at least partially defines an accumulation chamber that receives gas propellant from a portion of the can during an accumulation phase. Once the internal pressure of the accumulation chamber reaches a predetermined threshold, the diaphragm moves, carrying with it a seal so as to unseal an outlet channel, and thereby initiate a spray burst of the main active chemical. The diaphragm assumes its original position when the pressure within the accumulation chamber falls below a threshold pressure.

Abstract: A metering valve assembly comprising a ferrule and a valve housing defining an internal cavity. The valve housing accommodates an annular flange and a compression spring therein with a valve gasket closing the internal cavity. The valve housing is attached to the ferrule such that a stem portion of the valve stem protrudes through apertures provided in both the valve gasket and the ferrule. A stem portion has a discharge passageway which is normally closed by the valve gasket. Either an undersurface of the annular flange or a mating surface of the valve housing is provided with a compressible sealing member while the other is provided with an annular edge. The compressible sealing member and the annular edge form a seal therebetween, when the valve stem is sufficiently depressed, to partition the interior cavity into a metering chamber and a separate filling chamber whereby product may only be dispensed solely from the metering chamber when a product flow path is established.

Abstract: An underarm product and a spray package having a metered-dose valve assembly. The underarm product is contained and pressurized inside of the package. The underarm product being in the form of a liquid or emulsion. The underarm product is an antiperspirant or a deodorant. The underarm product contains a solubilized and/or non-solubilized propellant.

Abstract: A valve stem for use in an aerosol valve such as a metered dose medicinal aerosol valve is described. The valve stem includes a flattened area around the side hole. The flattened area helps reduce damage to the diaphragm aperture upon repeated actuation of the metered dose inhaler. Also described is a metered dose valve and a metered dose inhaler, each including the flattened valve stem of the present invention.

Abstract: Stabilized dispersions are provided for the delivery of a bioactive agent to the respiratory tract of a patient. The dispersions preferably comprise a plurality of perforated microstructures dispersed in a suspension medium that typically comprises a hydrofluoroalkane propellant. As density variations between the suspended particles and suspension medium are minimized and attractive forces between microstructures are attenuated, the disclosed dispersions are particularly resistant to degradation, such as, by settling or flocculation. In particularly preferred embodiments, the stabilized dispersions may be administered to the lung of a patient using a metered dose inhaler.

Abstract: A valve gasket for a metering valve serving to dispense a fluid, in particular a powder dispersed in a propellant gas, the metering valve including a valve body defining a metering chamber, and a valve rod mounted to slide in the metering chamber between a rest position and an actuating position, the sealing between the valve rod and the metering chamber being provided by the valve gasket, the valve body being fixed in a fixing cap serving to assemble the valve onto a fluid reservoir, the valve gasket being provided with a radially inside contact zone over which the valve rod slides, the contact zone being fixed to a rigid element so that, while the valve rod is moving, the contact zone of the valve gasket remains substantially unchanging in terms of its shape and of its position, the contact zone having a profile that is rounded at least in part, so as to reduce the area of contact between the valve gasket and the valve rod, the rigid element being an integral part of the fixing cap, and in particular the in

Abstract: A valve assembly can automatically dispense aerosol content from an aerosol container at predetermined intervals without the use of electric power. A diaphragm at least partially defines an accumulation chamber that receives aerosol content from the can during an accumulation phase. Once the internal pressure of the accumulation chamber reaches a predetermined threshold, the diaphragm moves axially, carrying with it a leg so as to unseal an outlet, and thereby initiate a spray burst. A pawl extends from the diaphragm, and engages a retention surface to resist movement of the diaphragm and prolong the accumulation phase. The diaphragm assumes its original position when the pressure within the accumulation chamber falls below a threshold pressure.

Abstract: Valve for an aerosol container for dispensing a suspension of a substance in a liquid propellant contained therein. The valve comprises a valve body (1) having at least one orifice (16) to allow a quantity of the suspension to pass from the container into the valve. The valve further comprises a ring (18) disposed around the valve body (1), the ring being positioned below the at least one orifice to reduce the volume of suspension that can be accommodated within the container below the at least one orifice when the container is orientated with the valve at the bottom, the ring having at least one portion of reduced axial thickness to provide a trough (19) around the valve body below the at least one orifice.

Abstract: A valve assembly is disclosed for use in an aerosol spray can capable of spraying viscous materials or materials with large particulates without clogging or packing like traditional aerosol spray cans designed for spraying texture materials. The valve opening may be located at substantially any point between the bottom and the top of the container. The valve assembly includes a side-fitting dip tube and a side-feeding mechanism, whereby texture material is dispensed when a central channel is aligned with a side conduit that is in flow communication with the dip tube. This allows highly-viscous materials, such as a fire suppressant material, or materials having large particulates, such as stucco, to be sprayed from an aerosol spray can without clogging. The valve assembly also includes a guiding mechanism to ensure alignment of the central channel and the side conduit in the actuated position.

Abstract: A metered dose aerosol valve that minimizes loss of prime and loss of drug dose by having a one-way valve mechanism positioned toward the end of a transfer passage that allows drug substance to pass from the aerosol container into the metering chamber, but not back.

Abstract: A valve stem for use in an aerosol valve such as a metered dose medicinal aerosol valve is described. The valve stem includes a flattened area around the side hole. The flattened area helps reduce damage to the diaphragm aperture upon repeated actuation of the metered dose inhaler. Also described is a metered dose valve and a metered dose inhaler, each including the flattened valve stem of the present invention.

Abstract: A metered dose aerosol valve that minimizes loss of prime and loss of drug dose by having a one-way valve mechanism positioned toward the end of a transfer passage that allows drug substance to pass from the aerosol container into the metering chamber, but not back.

Abstract: Valve for an aerosol container for dispensing a suspension of a substance in a liquid propellant contained therein The valve comprises a valve body (1) having at least one orifice (16) to allow a quantity of the suspension to pass from the container into the valve. The valve further comprises a ring (18) disposed around the valve body (1), the ring being positioned below the at least one orifice to reduce the volume of suspension that can be accommodated within the container below the at least one orifice when the container is orientated with the valve at the bottom, the ring having at least one portion of reduced axial thickness to provide a trough (19) around the valve body below the at least one orifice.

Abstract: A valve configured for use with a fuel cell in both a disengaged position, in which the valve has not established fluid communication with the fuel cell, and an engaged position, in which the valve has established fluid communication with the fuel cell. The valve includes a body having a first formation for maintaining the disengaged position, and a second formation for maintaining the engaged position.

Abstract: A subdividing apparatus for aerosol container for aerosol contents includes a fixed amount chamber formed in an apparatus body disposed with a stem of the aerosol container, and a piston capable of pressing the aerosol contents introduced in the fixed amount chamber is slidably attached in the apparatus body. A subdividing nozzle that can spray the aerosol contents in the fixed amount chamber is formed as to connect with the apparatus body via a subdividing valve. With the subdividing apparatus, spraying in a fixed amount in a prescribed period can be done with multiple spraying operations from the subdividing nozzle to limit overuse of, e.g., medicines and cosmetics.

Abstract: A gas injection valve comprises a valve casing fitted to a gas bottle, a valve pin slidably received in the valve casing, first and second seal rings fitted to the inner peripheral wall of the valve casing, and a fixed-quantity chamber defined between the first and second seal rings for capturing therein a fixed amount of gas before injection. The valve pin has a gas passage bore for intercommunicating a first port formed in the upper face of the tip of the valve pin and a second port formed in the outer peripheral wall of the valve pin. The second port is located to open into the substantially cylindrical hollow of the casing above the second seal ring with the valve pin kept in a lifted-up position and to open into the fixed-quantity chamber below the second seal ring during one-step pushing action and two-step pushing action of the valve pin.

Abstract: Valve for an aerosol container for dispensing a suspension of a substance in a liquid propellant contained therein. The valve comprises a valve body (1) having at least one orifice (16) to allow a quantity of the suspension to pass from the container into the valve. The valve further comprises a ring (18) disposed around the valve body (1), the ring being positioned below the at least one orifice to reduce the volume of suspension that can be accommodated within the container below the at least one orifice when the container is orientated with the valve at the bottom, the ring having at least one portion of reduced axial thickness to provide a trough (19) around the valve body below the at least one orifice.

Abstract: A valve (1), particularly for an aerosol container, includes, inside a valve body (2), an inlet passage (4) communicating with the container and an outlet passage (10), a first elastic return (16) for urging the valve (1) into the closed position, and a regulator for regulating the product outlet flow rate, which includes a second elastic return (14) for supplying a set-point pressure for the regulator. The second elastic return (14) is arranged in a compartment (12) of the valve body (2) isolated from the product, the pressure inside the compartment (12) being equal to atmospheric pressure.