A pump assembly (22) including a piston (36) reciprocal within a cylinder (48) for pressurizing a fluid in a pressure chamber (38) of the cylinder. A biasing member is configured to exert a driving force on the piston to drive the piston in a pumping direction from a reset position to a deployed position. A drivetrain (34) is engageable with the piston and provides power sufficient to transition the piston back to the reset position. A stroke limiting mechanism (42) has a stopping member (82) with a stopping surface (86) against which a protrusion (92) of the piston contacts to define a stroke length of the piston by limiting movement of the piston in the pumping direction (94) when the protrusion engages the stopping surface. The stopping member has a first configuration corresponding to a first stroke length for the piston and a second configuration corresponding to a second stroke length.

A pneumatic paint brush feeder apparatus for supplying paint on demand to a brush includes a paint container having a top side with a fill aperture extending through to a reservoir. A lid seals and alternatively unseals the fill aperture. A battery powered compressor is coupled to the paint container and an air line extends from a compressor tank into an intake aperture of the paint container to pressurize the reservoir. A hose extends through an outlet aperture of the paint container to deliver the paint to a distal end of the hose. A brush is coupled to the hose and has a delivery tube extending from a bottom end of a handle, through a head and into a plurality of bristles to deliver paint into the bristles. A button is coupled to the brush to prevent, or alternatively allow, the flow of paint to the bristles.

A paint sprayer includes a housing and a syringe assembly coupled to the housing with a reservoir and a plunger positioned within the reservoir. The reservoir is configured to store fluid. The paint sprayer also includes a spray assembly in fluid communication with the syringe assembly. The spray assembly includes a spray nozzle and a spray tip. The spray tip is configured to expel fluid. The paint sprayer further includes a motor pump assembly disposed in the housing and an actuator operable to energize the motor pump assembly to draw fluid from the reservoir and expel it from the spray tip.

A device for dispensing a fluid topical composition includes a reservoir storing the composition and dispensing a pressurized flow of the composition. The device also includes an accumulator having an expandable chamber in fluidly communication with the reservoir. The chamber is biased towards a deflated configuration so that, when filled with the composition the chamber expands against this bias applying pressure to the composition stored therein. The device includes a supply valve regulating the flow of the composition from the reservoir to the accumulator, and a pressure sensor. The device further includes a processing arrangement analyzing data from the sensor to determine whether pressure in the accumulator is above a predetermined threshold and controlling the supply valve to maintain the pressure within a desired pressure range. The device also includes a deposition arrangement dispensing the composition from the accumulator under control of the processing arrangement.

Techniques herein include a bladder-based dispense system using an elongate bladder configured to selectively expand and contract to assist with dispense actions. This dispense system compensates for filter-lag, which often accompanies fluid filtering for microfabrication. This dispense system also provides a high-purity and high precision dispense unit. A modular hydraulic unit houses the elongate bladder and hydraulic fluid in contact with an exterior surface of the bladder. When pressurized process fluid is in the elongate bladder, hydraulic controls can selectively reduce pressure on the bladder to cause expansion, and then selectively increase hydraulic pressure to assist with a dispense action.

A discharge container 1 includes a container body having a discharge face 13, on which a discharge hole 15 is formed, a cylinder part including a discharge space 2 in communication with the discharge hole 15 inside the container body, a piston 3 movable between a first position and a second position, the second position being farther than the first position from the discharge face in the discharge space 2, and a plurality of storage portions 5a to 5e for storing contents, wherein a plurality of inlet holes respectively corresponding to the plurality of storage portions 5a to 5e are formed in an inner wall of the discharge space 2, wherein, when the piston 3 is at the second position, the plurality of inlet holes 22a to 22e communicate with the discharge space 2 between a top face of the piston 3 and the discharge face, and the contents are ready to flow into the discharge space 2 from the plurality of inlet holes 22a to 22e, and wherein, when the piston 3 is at the first position, the plurality of inlet holes 22a to 22e are closed by the piston 3.

A spray gun cup receptacle is disclosed comprising an open end for receiving a liner within a cavity and a base end opposite the open end. The sidewall comprises at least one aperture through which the cavity is visible from outside the spray gun cup receptacle. The apertures are divided one above the other by a brace member, at least a portion of which is disposed at a brace member angle relative to the base plane. Also disclosed are receptacles comprising one or more tactile feedback members positioned adjacent an aperture.

A nebulizer for nebulizing a liquid from a container, where the nebulizer includes a fluid pump for withdrawing the liquid in doses from the container and pressurizing the respective doses for nebulization. The container includes an air pump with a piston/cylinder arrangement to pressurizing the liquid in the container to help withdrawing the liquid from the container. A control valve limits the air pressure acting on the liquid.

A spray tip comprises a tip body, a tip piece, and a pre-orifice piece. The tip body has a fluid channel along a channel axis (A.sub.C). The tip piece is disposed within the fluid channel, and has a stepped, narrowing passage that terminates in an outlet orifice. The pre-orifice piece has an inlet passage, and is disposed within the fluid channel, abutting and immediately upstream of the tip piece. The pre-orifice piece and the tip piece together define a turbulating chamber therebetween.

The invention relates to an electrostatic atomizer for liquids, in particular, cosmetics, the atomizer comprising a housing, an electrical energy source, an activation mechanism, control electronics, a high-voltage source, a liquid tank, a delivery device and atomizer nozzles. The delivery device is arranged here between the liquid tank and the atomizer nozzles, the delivery device being connected to the liquid tank by a first line and the delivery device being connected to the atomizer nozzles by a second line, so that the delivery device sucks liquid out of the liquid tank and delivers it to the atomizer nozzles.