A foam dispenser has a foam-generating pump (1) mounted on a container (100) to hold liquid. The pump (1) has a liquid intake conduit with a ball valve (27) and an air intake conduit (45) provided partly by a jacket component (4) fitting around the pump body (2) with clearance. The pump has structure defining a mixing zone (50) for mixing air and liquid, a foam chamber (28) for holding foam received from the mixing zone, and a discharge conduit leading from the foam chamber to a discharge outlet (36). The mixed air and liquid pass through a permeable foam regulator mesh (54). One or more air inlets (47) lead into the mixing zone (50) from the air intake conduit (45). A liquid inlet in the form of a restricted jet orifice (89) leads into the mixing zone (50) from the liquid intake conduit, upstream of the inlet ball valve (27). A regulator mesh (53) is also provided between the liquid inlet and mixing zone.

A dispensing device for dispensing a foamable product. The dispensing device comprises a dispensing channel (110; 210; 410). The dispensing channel has: an inlet (111; 211; 411) for communicating with a valve-element (120) of a container (130) containing the foamable product; and an outlet (112; 212; 412) for dispensing the foamable product. The dispensing channel (110; 210; 410) further comprises a variable-volume cavity (140; 240; 440) at the outlet. The variable-volume cavity (140; 240; 440) is defined at least partly by a first component (142; 242; 442) and a second component (144; 244; 444) that is separate from and rigidly movably with respect to the first component to vary the volume of the variable-volume cavity (140; 240; 440) between a first configuration and a second configuration. In the first configuration, the variable-volume cavity (140; 240; 440) has a first volume and the outlet (112; 212; 412) is closed. In the second configuration, the variable-volume cavity has a second volume and the outlet (112; 212; 412) is open. The second volume is greater than the first volume.

Provided is a pump-type airtight liquid container, and more particularly, to a pump-type airtight liquid container having an improved, simplified structure that provides higher airtightness and effectively allows total discharge of liquid content therefrom.

The present invention relates to a device for the delivery of a mist of a dose of an ophthalmic liquid, including a housing with a holding chamber having a discharge opening for holding the dose of liquid to be delivered, a pump for pumping, via a dose supply conduit, the dose of the liquid to the holding chamber, the pump being connected with a container containing a plurality of the doses, and an air flow conduit for supplying a flow of air to the holding chamber so as to force the dose delivered by the pump to the holding chamber out through the discharge opening.

A pre-compression pump includes a main body, a first piston assembly movably mounted in the main body, a head assembly on a top of the first piston assembly, a second piston in the first piston assembly, and a second spring supported between the second piston and the first piston assembly. A water storage sump is disposed between the main body and the first piston assembly. A water outlet channel is disposed in the inner part of the first piston assembly. The water outlet channel is connected to the water storage sump and a nozzle of the head assembly. The second piston has an ejector pin portion for sealing the water outlet channel.

An improved foam piston pump in which a multiple of air pumps are disposed coaxially about a piston member and spaced axially along the piston member, preferably coaxially with a liquid pump for discharging air and liquid as foam. Each air pump is preferably provided by a modular piston within a modular casing assembly such that arrangements with one, two or more identical air pumps can be assembled from a plurality of the same modular components.

Provided is a pump-type airtight liquid container, and more particularly, to a pump-type airtight liquid container having an improved, simplified structure that provides higher airtightness and effectively allows total discharge of liquid content therefrom.

An exemplary foam dispensing system includes a dispenser housing configured to be mounted below a counter, a spout configured to be mounted above a counter, a container supported by the dispenser housing, a pump in fluid communications with the container and configured to be mounted below a counter. The pump includes an air pump portion and a liquid pump portion. The pump also includes a mixing chamber. Liquid pumped from the liquid pump portion is mixed with air pumped from the air pump portion in the mixing chamber. A dispense tube is included that is configured to extend from the mixing chamber below a countertop to one or more mix media located above the countertop proximate an end of the spout. The one or more mix media are located near an end of the spout. An outlet nozzle is also provided and is located downstream of the one or more mix media.

A dispenser system for a pumpable dispensed product, in particular a cosmetic fluid dispensed product such as a washing lotion, a cream lotion, a perfume liquid or similar includes a rigid or pliable product container and a dispensing device with a pump apparatus. The pump apparatus includes at least one first valve group for conveying the dispensed product out of the product container. The pump apparatus includes a second valve group for feeding air into the product container, wherein the second valve group defines a feed duct in which at least one filter unit for filtering sterile air is arranged. In subsidiary aspect, a filter unit for the dispenser system as well as a manufacturing facility and a manufacturing method for the manufacture of the dispenser system are provided.

A pump dispenser having a bottle with a neck and a pump assembly. The pump assembly includes an actuator, a closure connected to the actuator and coupled to the neck of the bottle, a dip tube, and a dual chamber pump. The dual chamber pump includes a piston assembly, a sealing cap, and a housing, which includes a pump chamber, a storage chamber having a cavity, and a core. The sealing cap is rigidly connected to the core and closes the storage chamber at a lower portion such that the substance to be released remains stored in the storage chamber cavity. When the actuator is pushed down for a first time by a user, a piston assembly moves to push down a connecting stem, which pushes down the sealing cap to open the storage chamber for releasing the substance contained in the storage chamber from the bottle.