A solution dispensing device includes a housing having an upper section and a lower section. The upper section is comprised of a push button exposed through the exterior of the upper section. The push button is movably connected to at least a first air chamber and at least one solution chamber. The solution chamber is in fluid communication with the solution reservoir and a discharge nozzle. The first air chamber is fluidly connected to the discharge nozzle. The push button is coupled to an elongated mixing rod that protrudes into the lower section. The lower section comprises an interior volume that functions as a solution reservoir. A solution mixer is rotatably coupled to the elongated mixing rod. Upon a press of the push button the solution in the solution chamber and the air in the at least a first air chamber will mix and exit the discharge nozzle.

Exemplary dispensers, pumps and refill units for dispensing a liquid soap and concentrate mixtures are disclosed herein. An exemplary foam dispenser system includes a foamable liquid container, a concentrate container, an air source for providing pressurized air and a mixing chamber. One or more liquid conduits place the contents of the foamable liquid container in fluid communication with the mixing chamber. One or more air passages place the air source in fluid communication with the mixing chamber. An outlet conduit out of the mixing chamber is also provided. One or more concentrate conduits place the contents of the concentrate container in fluid communication with one of the liquid conduits, the air conduits, the mixing chamber and the outlet conduit. Mix media located within the outlet conduit.

The invention relates to a soap dispenser that is designed to be mounted on a vertical surface such as a wall. More particularly, the soap dispenser defines a reservoir that is designed to accept bulk quantities of soap. The soap is dispensed from the top of the reservoir by a pump.

A piston pump for dispensing fluid from a closed container in which during the cycle of operation to dispense fluid, atmospheric air is discharged into the reservoir towards reducing a vacuum that might otherwise be created within the container.

In a foam discharge device, a pump has a piston for a liquid linked to a stem, a cylinder for a liquid in which the piston for a liquid is vertically slidably accommodated, a piston for air linked to the stem, a cylinder for air in which the piston for air is vertically slidably accommodated, and an air-liquid mixing unit to mix a liquid from the cylinder for a liquid and air from the cylinder for air to foam the liquid, the cylinder for air is inside a mounting cap and accommodated in a container main body, a head-section-side cylinder for air into which a piston tube erected at a ceiling wall section of the mounting cap is fitted extends from a pressing head, and a communication path to bring the insides of the head-section-side cylinder for air and the cylinder for air in communication is formed at the pump.

Exemplary embodiments of energy efficient foam pumps and dispensers are disclosed herein. An exemplary foam dispenser included a housing, a reservoir for holding a foamable liquid, a motor, a motor shaft, and a turbine air pump. The turbine air pump is connected to the motor shaft. A cam is also attached to the motor shaft and is used for driving a liquid pump. Liquid from the liquid pump and air from the turbine air pump are mixed in a mixing chamber and dispensed through an outlet nozzle. The touch-free foam dispenser further includes a sensor for sensing an object, circuitry for receiving a signal from the sensor indicative of an object being present and circuitry for energizing the motor to dispense fluid in the form of a foam.

The present invention provides an improved pump assembly incorporating a liquid pump and an air pump and which pump includes a flexible annular diaphragm member coaxially about a piston-forming element forming a component with the liquid pump.

A valvular conduit, preferably a Tesla valvular conduit, in which a plug member is coaxially received within a bore in a sleeve member and in which passageways are defined between the plug member and the sleeve member within interior walls configured to permit mixing of fluid flowing through the passageways in at least one direction, preferably, the relatively free passage of fluid through the passageways upstream but increased the resistance to downstream flow of the fluid through each passageway.

A foam discharger includes a foamer mechanism (20), the foamer mechanism (20) includes: a liquid flow path (50) through which liquid supplied from a liquid supply unit to a mixing part (21) passes; and a gas flow path (70) through which a gas supplied from a gas supply unit to the mixing part (21) passes, the liquid flow path (50) includes an adjacent liquid flow path (51) having a liquid inlet (52) open to the mixing part (21), the gas flow path (70) includes a plurality of adjacent gas flow paths (71) each having a gas inlet (72) open to the mixing part (21), and the liquid inlet (52) is arranged at a position corresponding to a merging part (22) of gases supplied from the plurality of adjacent gas flow paths (71) to the mixing part (21) via the gas inlet (72).

A device for dispensing a liquid may include a basin defining a reservoir, a pump including a barrel and a spring, the barrel coupled to the basin, the barrel defining a cavity, and the spring disposed in the cavity, and an actuator at least partially disposed in the reservoir, the actuator defining a first orifice, a second orifice, and a lumen extending between the first orifice and the second orifice, the reservoir in fluid communication with the lumen via the first orifice, the actuator depressible to move the second orifice in a first direction defined from the reservoir toward the cavity of the barrel, and the spring of the pump biasing the actuator to move in a second direction defined from the cavity of the barrel toward the reservoir.