A fluid dispenser having: a fluid reservoir (1); an applicator (2); and a dispenser module (3) that is arranged between the reservoir (1) and the applicator (2); the fluid dispenser being characterized in that the dispenser module (3) includes an air pump (4) for sending air into the reservoir (1), and a fluid duct (54) connecting the reservoir (1) to the applicator (2).

A device for delivering a predetermined amount of a substance within at least one body cavity of a subject, where the predetermined amount is at an effective amount for treatment of obesity or binge eating disorder. The device includes (a) A volume to contain the predetermined amount of the substance. (b) A delivery end placeable in proximity to the body cavity. The delivery end is in fluid communication with the volume and comprises at least one orifice. (c) A valve mechanically connected to the volume, with at least two configurations: (i) an active configuration configured to deliver the predetermined amount of the substance; and, (ii) an inactive configuration, in which the valve prevents delivery of the predetermined amount of the substance. (d) A fluid tight chamber configured to contain a predetermined volume of pressurized gas at a predetermined pressure.

An airpot beverage dispenser having a body with a beverage cavity, a lid with lower and upper lid portions, a bellows within the upper lid portion, an actuator for compressing the bellows to increase the pressure of trapped air in the bellows, a duckbill valve, a skirt valve extending fully around the duckbill valve, and a spout. The skirt valve is movable into sealing engagement with a lid lower wall to define an air flow path from the bellows to the beverage cavity, and when the pressure of the trapped air in the bellows is sufficiently increased, the duckbill valve opens and passes the trapped air to the beverage cavity to force beverage out the spout. When the spout is moved to a stored position and the dispenser is in a locked state, the skirt valve serves as a relief valve to prevent over pressure in the beverage cavity.

A spray device comprises a diaphragm pump, a spray gun and a hose. The diaphragm pump comprises an air outlet to supply air flow, a casing and a pump assembly disposed in the casing. The spray gun comprises a housing and a Venturi tube arranged entirely inside the housing. The housing has an air inlet to receive the air flow supplied from the diaphragm pump and guide the air flow into the Venturi tube. The spray gun comprises a paint receptacle that receives and holds therein a paint material that is supplied into the spray gun and atomized to form paint droplets and entrain the air flow received from the diaphragm pump to allow the paint droplets to be sprayed onto a workpiece. The hose has two ends respectively coupled to the air outlet of the diaphragm pump and the air inlet of the spray gun.

Methods and devices for delivering one or more substances within at least one body cavity are provided. The device includes at least one nosepiece including at least one capsule having a volume V.sub.sub of the substances; at least one base in communication with the nosepiece, the base including at least one chamber configured to confine pressurized fluid at volume V.sub.PF and pressure P.sub.PF; and at least one hollow puncturing member. The hollow puncturing member includes at least one end in fluid communication with the nosepiece and a second end in fluid communication with the base. The first and second ends are fluidly interconnected by a hollow tube. The fluid inlet port of the capsule is configured in terms of size and shape to interface in a sealable manner with the one end of the at least one puncturing member.

A device for delivering a predetermined volume a substance within a body cavity. The device includes: at least one predefined volume sized and shaped to contain a predetermined volume the substance; a delivery end in fluid communication with a container; and at least one valve mechanically connected to the container and configurable between an active configuration in which the valve enables delivery of a volume of the substance and an inactive configuration, in which the valve prevents delivery.

A fluid dispenser comprising: a fluid reservoir (1); an applicator (2); and a dispenser module (3) that is arranged between the reservoir (1) and the applicator (2);

the fluid dispenser being characterized in that the dispenser module (3) includes an air pump (4) for sending air into the reservoir (1), and a fluid duct (54) connecting the reservoir (1) to the applicator (2).

An essential oil diffusion mechanism, including: a housing having an accommodation chamber; and a separator that divides the accommodation chamber into an upper chamber and a lower chamber and includes a horizontal partition plate and vertical partition plates. The horizontal partition plate defines at least one interconnecting hole. An upper surface of each vertical partition plate is spaced apart from a chamber wall of the upper chamber to form an upper interconnecting aperture. Each vertical partition plate defines an interconnecting reflux hole. A lower surface of each baffling plate is spaced apart from the horizontal partition plate to form a lower interconnecting aperture. The interconnecting hole, the upper interconnecting aperture, the lower interconnecting aperture, and the air outlet are sequentially arranged in communication to form an air outlet channel. The upper interconnecting aperture, the reflux hole, and the interconnecting hole are sequentially arranged in communication to form a reflux channel.

A hand-held integral airbrush includes a shell provided with a grab handle, wherein an upper accommodating cavity and a lower accommodating cavity are formed in the shell, an airbrush assembly is arranged in the upper accommodating cavity of the shell, and an air pump assembly is arranged in the lower accommodating cavity of the shell and is used for pumping compressed air into the airbrush assembly. The hand-held integral airbrush further includes a switch part, as well as an operating button which includes a first control part and a second control part. According to the hand-held integral airbrush, an air pump and an airbrush are integrated in the ergonomically designed grab handle, and the air pump and the airbrush are controlled by the trigger-type operating button to operate, so that the hand-held integral airbrush is more convenient to hold and operate.

The present disclosure provides a sprayer. The sprayer includes the spraying part. A spraying needle penetrates a first control channel and passes through a second water channel to reach a spraying end. A control block is connected with the spraying needle, the spraying needle is fitted in with an inner wall of a second control channel to block the water passing through the second control channel, meanwhile, the control block blocks an air inlet hole, and water in a water tank is separated from the atmospheric pressure. When the spraying needle is separated from the second control channel, the control block is distal to the air inlet hole, water in the water tank is communicated with atmospheric pressure, and the water reaches the spraying end through the second control channel.