A sprayer includes a spray gun and a hopper. An air source provides compressed air to the sprayer to both eject fluid from the spray gun as a spray and to pressurize the hopper. The spray gun includes passages for providing compressed air to the nozzle for spraying and to the hopper for pressurizing the hopper. The spray gun further includes a relief valve for venting pressurized air from the hopper. The hopper receives the compressed air through a port in the hopper, and the compressed air assists the flow of material out of the hopper and into the spray gun.

The invention relates to a dispensing device (11) for spraying a sprayable medium, in particular a fluid or powder, which device is designed as a handheld apparatus, in which a compressed air device (86) is provided, comprising a spray head (14) that is connected to the housing (12) and is intended for dispensing the medium, comprising a fluid line (44) leading from the storage container (41) to the spray head (14) and comprising a supply line (36) leading from the compressed air device (86) to the spray head (14), and comprising a first nozzle (38) that is connected to the supply line (36) and, separately therefrom, comprising a second nozzle (46) that is connected to the fluid line (44) and that protrudes into an airflow emerging from the first nozzle (38), such that an atomizing zone (49) is formed outside of the spray head (14), wherein, in a plan view of the outlet opening (83) of the first nozzle (38), the second nozzle (46) covers at least 1% of an internal cross section of the first nozzle (38).

A sprayer includes a spray gun and a hopper. An air source provides compressed air to the sprayer to both eject fluid from the spray gun as a spray and to pressurize the hopper. The spray gun includes passages for providing compressed air to the nozzle for spraying and to the hopper for pressurizing the hopper. The spray gun further includes a relief valve for venting pressurized air from the hopper. The hopper receives the compressed air through a port in the hopper, and the compressed air assists the flow of material out of the hopper and into the spray gun.

A medical device including an application device with a first fluid path and a container movably attached to the application device. The container and the application device have a second fluid path therethrough, the container includes an inner chamber that is intermediate proximal and distal portions of the second fluid path, the inner chamber is fluidly isolated from the proximal portion of the second fluid path at a first position of the container, and the inner chamber is fluidly coupled to the proximal and distal portions of the second fluid path at a second position of the container. The first fluid path bypasses the container and the passage of fluid through the first fluid path is separately controllable from the passage of fluid through the second fluid path.

A selectively configurable spray gun may include a gun body comprising a selectable forward section and a rearward section. The rearward section may be connected with either of two or more selectable forward sections so as to selectively configure the spray gun to operate either with a dense phase powder supply configuration or a with dilute phase powder supply configuration. The rearward section may include a selectable powder flow path that is connectable at an inlet end to a source of dense phase powder and at an outlet end to a selectable spray nozzle in the selectable forward section that may optionally include a diffuser. An adapter may be used to connect the rearward section with a selectable spray nozzle or air cap. A manual spray gun embodiment is also presented. A selectively configurable spray gun for use with a dense phase powder supply may include a smaller diameter powder tube that extends through a larger diameter powder tube.

A drywall texture dispensing system includes an air gun that may be fluidly coupled to an air source. A reservoir is provided and the reservoir may contain a fluid. The reservoir is removably coupled to the air gun such that the reservoir is in fluid communication with the air gun. The reservoir has a diameter that is less than approximately thirty cm. Thus, the reservoir facilitates the air gun to dispense the fluid in a restricted area. A lid is removably coupled to the reservoir.

There is described a dry powder medicament delivery device comprising: a medicament container containing a unit dose of dry powder medicament; a medicament dispensing assembly; and optionally an air source.

Therapeutic powder applicators and their methods of operation are described. In some embodiments, a first flow of gas may flow through a distal porous portion of a chamber containing a therapeutic powder. This gas may fluidize and entrain the therapeutic powder and flow the entrained powder through an outlet that is in fluid communication with the chamber.

A silica agent applicator includes a reservoir for containing a silica agent. A hollow, deformable bulb is adapted to be squeezed to force air through a first air tube fluidly connecting the bulb and a bottom of the reservoir. A second tube extends from a top of the reservoir to an exit of the applicator, to convey aerosolized silica agent out of the applicator for application onto a surface or an insect.

A device for delivering an agent that includes a housing configured to store an agent and a cone assembly at least partially received within the housing. The cone assembly including an inner wall configured to be adjacent to the agent, an outlet channel extending from the inner wall, an inlet channel, and an intermediate channel between the outlet channel and the inlet channel. The inlet channel is in fluid communication with the outlet channel via the intermediate channel. The device includes a filter disposed within the inlet channel and positioned adjacent to the intermediate channel. The filter including a plurality of pores configured to permit a fluid received by the inlet channel to pass through the intermediate channel to mix with the agent adjacent to the inner wall.