In exemplary embodiments of the present invention, Flair® based aerosol-type devices can be provided. Such devices utilize a combination of Flair® technology, pre-compression valves and aerosol like pressurization of the dispensed liquid. Such a dispensing device has a main body comprising a pressure chamber, the latter being provided with a pressure piston and a pressure spring. The device further has a piston and a piston chamber which draws liquid from a reservoir and fills the pressure chamber with that liquid as a user operates the trigger in various compression and release strokes. The piston chamber has both an inlet valve and an outlet valve. In a dispensing head a valve is provided to regulate the strength of the flow and preclude leakage. Once the liquid is sufficiently pressurized, it can be dispensed by a user opening an activation valve, such as by pressing on an activation button, and spray can be abruptly stopped by a user ceasing to push on such button. Or, for example, in alternate embodiments without an activation button, once the liquid is sufficiently pressurized, continuous spray occurs until the pressure chamber is emptied. By repeatedly pumping the trigger before the pressure chamber is fully emptied, continuous spray can be achieved. By designing the input volume to be amply greater than the volume of the pressure chamber, continuous spray with fewer pumping strokes can be implemented.

[Object] To provide a pump dispenser that makes it possible to prevent air from entering a conduit even in a case where there is little liquid left in a vessel and prevent back-flow drippage of the liquid from the conduit even in a case where the pump dispenser has been removed from the vessel.

[Solution] An adaptor A that is attached to a pump dispenser B configured to suck up liquid out of a vessel via a conduit 3 and eject the liquid from a nozzle includes a tubular portion 1 that is attachable to the conduit 3 and that has an opening in an upper part thereof and a bottom wall portion 11 forming the bottom of the tubular portion 1. The bottom wall portion 11 includes an outlet hole 2, and the diameter ER of the outlet hole is smaller than the inner diameter TR of the conduit.

A dispensing container capable of changing the ratio between the amounts of two kinds of contents to be dispensed, includes two container bodies, two pumps including two stems, an adjusting member configured to press the stems and to be rotatable about an axis extending in a substantially vertical direction, and a pressing head configured to, in response to a depressing operation, rotate about an axis extending in a substantially horizontal direction, to thereby depress the stems via the adjusting member. The adjusting member includes a plurality of pressing portions against which the stems are pressed, and when the adjusting member is rotated about the axis, a depressing stroke of the one of the plurality of pressing portions on the side of one of the stems becomes shorter, and a depressing stroke of the other one of the plurality of pressing portions on the side of the other stem becomes longer.

A sprayer device with a trigger operated pump is operative for pumping and spraying liquid from an attached liquid container. The trigger sprayer includes valve body provided with a base portion that is configured to be mounted to the neck of the liquid container and a delivery nozzle from which the liquid is sprayed. A fluid flow path extends from the base portion to the delivery nozzle. A pumping chamber is in fluid communication with the flow passage and there is a vent opening between the pumping chamber and the interior of said base. A piston with spaced inboard and outboard seals is movable in the pumping chamber and the vent opening is located between the seals. A check valve is disposed between the vent opening and the interior of the base portion to prevent liquid from the container from backflowing into the pumping chamber during shipment and handling.

A liquid dispensing system includes at least one container for storing the liquid to be dispensed, the at least one container having a neck defining an fill opening for the liquid. The system includes a liquid dispensing device releasably connectable to the at least one container, an exchangeable cartridge for an additive to be mixed with the stored liquid, where the cartridge is accommodated in the neck, and means for opening the cartridge. The cartridge includes a one-piece hollow body filled with the additive and with a pressurized gas, and the opening means include at least one piercing member arranged to pierce a wall of the hollow body. A method of dispensing a liquid by using the liquid dispensing system, and a cartridge for use in the liquid dispensing system and/or method.

A trigger dispensing head for a liquid dispensing device includes a chassis, a trigger, elastic return means having a return element supported by the chassis, and a reversible locking device. The locking device is supported by the return element of a non-return element.

A dispensing system includes a container containing a flowable base formulation to be dispensed, an additive mixing device, and an actuable pump engine which draws the flowable base formulation from the container and pumps it through the mixing device. The additive mixing device includes a body with an internal cavity, an additive ingredient within the cavity, and a flow path/mixing chamber between an input and an output. With each pump of the device the additive ingredient is introduced into, and mixed with, a flow of the base formulation traveling through the mixing device. Multiple additive mixing devices may be interchangeable for different formulations, and the mixing devices may be refillable.

A spray dispenser operably connectable to a container for dispensing fluid from the container. The spray dispenser includes a pump, a shroud disposed about at least a portion of the pump. The shroud has a shroud bottom edge defining an open end. A nozzle is in fluid communication with an outlet of the pump, the nozzle adjacent to an opening in the shroud and extending outwardly therefrom. A unitary sprayer cover having a first portion spaced apart from the open end of the shroud to define a shroud top of the shroud. The unitary sprayer cover further includes a second portion having a proximal end connected to the first portion and a distal end disposed away from the first portion. The second portion extends from the shroud to at least partially surround the nozzle.

A spray dispenser is provided, the spray dispenser comprising a container for holding a liquid to be dispensed and a dispensing assembly for extracting liquid from said container, the dispensing assembly comprising a pressure-relief valve for release of excessive pressure in the container and a filter arranged to permit egress of gas through the filter, inhibit egress of liquid from the container and to inhibit ingress of contaminants into the container through the pressure relief valve. A dispensing assembly for use is a spray dispenser is also provided.

A gravity fed spray head includes a housing, a coupling mounted atop the housing for fastening a container above the housing, a sprayer mounted to a horizontal extension of the housing, a pump mounted inside the housing below the coupling, the pump having an inlet and an outlet facing the coupling, and a trigger having a first end rotatably mounted to the housing below the coupling, and a second end extending below the pump, the trigger coupled to a trigger lever for actuating the pump.