A certain amount of contents is easily sprayed by one pressing operation. A metered spray unit 10 being mounted on a stem 23 of a valve 22 that is provided on the upper portion of a container body 21, configured to spray a certain amount of contents in a container body 21, includes an outer cylinder 30 which is provided with a stem insertion hole 30a into which the tip of the stem 23 is inserted and the inner wall thereof is fixed to the stem, a metering chamber 35 connected to the stem insertion hole 30a, the metering chamber being an internal space having a predetermined capacity, connected to the stem insertion hole 30a, and an spray port 33 communicating with the metering chamber 35, a plug member 40 that is inserted from the inside of the metering chamber 35 into the spray port 33 for blocking the spray port 33, a push button 51, an elastic member 60 for supporting the push button 51 on the outer cylinder 30, and a shaft member 50 connected to the push button 51. The elastic member 60 has an amount of displacement due to the pressing force applied to the push button 51, being smaller than the amount of displacement when applying the same pressing force to the spring for urging the stem 23 within the valve 22.

An aerosol dispenser having a metering valve mechanism having a metering chamber and a propellant-accommodating space region configured to be isolated from each other by an annular piston, and a metering formation seal valve configured to isolate the metering chamber from a contents accommodation space region in a propelling mode. In a contents filling mode the seal valve is moved by the flow of the filled contents in a direction away from the stem to allow the filled contents to flow into the contents accommodation space region.

An aerosol dispenser having a metering valve mechanism having a metering chamber and a propellant-accommodating space region configured to be isolated from each other by an annular piston, and a metering formation seal valve configured to isolate the metering chamber from a contents accommodation space region in a propelling mode. In a contents filling mode the seal valve is moved by the flow of the filled contents in a direction away from the stem to allow the filled contents to flow into the contents accommodation space region.

Device for dispensing a fluid product, having a reservoir containing the fluid product and a metering valve having a valve body containing a metering chamber, a valve shut-off element sliding axially in the valve body between an rest position and a dispensing position in order to dispense the contents of the metering chamber. The valve shut-off element is urged towards its rest position by a valve spring, the reservoir containing a follower-piston and a piston spring that axially urges the follower-piston towards the metering valve, the follower-piston being suitable for axially sliding in the reservoir in a sealed manner after each actuation to compensate for the volume of each dispensed dose.

Device for dispensing a fluid product, having a reservoir containing the fluid product and a metering valve having a valve body containing a metering chamber, a valve shut-off element sliding axially in the valve body between an rest position and a dispensing position in order to dispense the contents of the metering chamber. The valve shut-off element is urged towards its rest position by a valve spring, the reservoir containing a follower-piston and a piston spring that axially urges the follower-piston towards the metering valve, the follower-piston being suitable for axially sliding in the reservoir in a sealed manner after each actuation to compensate for the volume of each dispensed dose.

Provided are a mosquito control aerosol which can produce a good control effect on mosquitoes over a long period of time while reducing influence on humans and pets, and a mosquito control method using the mosquito control aerosol. The mosquito control aerosol includes: a pressure-resistant container equipped with a metering spray valve, that contains a liquid aerosol-forming material including an insect pest control component and an organic solvent, and a propellant; and a spray button having a spray outlet connected to the metering spray valve. The volume of the liquid aerosol-forming material sprayed when the spray button is pressed down once is adjusted to 0.1 to 0.4 mL, and the spray force thereof as measured at a distance of 20 cm from the spray outlet at 25 C. is adjusted to 0.3 to 10.0 g.Math.f.

Provided are a mosquito control aerosol which can produce a good control effect on mosquitoes over a long period of time while reducing influence on humans and pets, and a mosquito control method using the mosquito control aerosol. The mosquito control aerosol includes: a pressure-resistant container equipped with a metering spray valve, that contains a liquid aerosol-forming material including an insect pest control component and an organic solvent, and a propellant; and a spray button having a spray outlet connected to the metering spray valve. The volume of the liquid aerosol-forming material sprayed when the spray button is pressed down once is adjusted to 0.1 to 0.4 mL, and the spray force thereof as measured at a distance of 20 cm from the spray outlet at 25 C. is adjusted to 0.3 to 10.0 g.Math.f.

A fluid dispenser device comprising: a body (100) that is provided with a dispenser orifice (110); a reservoir (1) containing fluid and a propellant gas; and a metering valve (20) that is assembled on said reservoir (1); said reservoir (1) being movable in said body (100) so as to actuate the metering valve (20) and dispense a dose of fluid through said dispenser orifice (110), said metering valve (20) including a valve member (30) that slides in said metering valve (20) during actuation; said device further comprising at least one sealing element (40, 41, 42) so as to form a leaktight seal, at least one sealing element (40, 41, 42) of said device comprising COC elastomer.

A fluid dispenser device comprising: a body (100) that is provided with a dispenser orifice (110); a reservoir (1) containing fluid and a propellant gas; and a metering valve (20) that is assembled on said reservoir (1); said reservoir (1) being movable in said body (100) so as to actuate the metering valve (20) and dispense a dose of fluid through said dispenser orifice (110), said metering valve (20) including a valve member (30) that slides in said metering valve (20) during actuation; said device further comprising at least one sealing element (40, 41, 42) so as to form a leaktight seal, at least one sealing element (40, 41, 42) of said device comprising COC elastomer.

The present invention provides an aerosol device for delivering a pharmaceutical formulation by inhalation via the mouth to the lungs or to the nostril in metered doses comprising: a pressurised aerosol canister including a vial containing a pharmaceutical formulation comprising an active ingredient, a propellant and, optionally, a co-solvent, the aerosol canister further comprising a metering valve having a valve stem; and an actuator for the aerosol canister, the actuator including a delivery outlet and a stem block, the stem block having a receptacle into which the valve stem of the metering valve of the aerosol canister is received and axially located and being displaceable relative to the vial of the aerosol canister to actuate the metering valve of the aerosol canister, a sump extending below the receptacle, the stem block further defining a discharge orifice arranged to direct the pharmaceutical formulation through the delivery outlet, a transfer tunnel having an input opening and an output opening through which a dispensed dose of the pharmaceutical formulation is able to pass from the sump to the discharge orifice, and a land length defining the distance from between the input opening and output opening, wherein the input opening and the output opening have cross-sectional areas of from 0.002 to 0.8 mm.sup.2 and the cross-sectional area of the input opening is smaller than the cross-sectional area of the output opening, and wherein the land length is from 0.5 mm to 10 mm.