A bladder-type dispensing pump (100) comprises a push nozzle (110) and a container cap (120), said nozzle (110) and cap (120) being interconnected. The push nozzle (110) is provided with a bladder portion (111). The bladder portion (111) is able to deform such that the volume of the internal cavity thereof may change. The bladder-type dispensing pump (100) is further provided with an elastic return mechanism. A portion of the elastic return mechanism is connected to or in contact with the bladder portion (111). When the bladder portion (111) is depressed so as to deform, the elastic return mechanism deforms with it, and when pressure acting on the bladder portion (111) is removed, the elastic return mechanism returns to its non-deformed state, causing the bladder portion (111) to reset.

A trigger sprayer having a venting system including a piston bore and a vent bore at least partially contained therein, the vent bore including at least one vent port; a piston and vent piston are moveably seated in the piston bore and vent bore, respectfully, the vent piston including at least one annular seal and a vent path port, the vent path port and vent port in gaseous communication when the vent piston is actuated and moved over the vent port.

A dispenser for applying liquid, having a housing with an applicator opening and a liquid reservoir. The dispenser has a ventilation duct by which an ambient atmosphere is connected to the liquid reservoir so that, after the application of liquid, an inflow of air from the atmosphere is permitted into the liquid reservoir. The dispenser is provided with a detection installation which for detecting an application procedure detects air flowing in through the ventilation duct. The dispenser has a protective cap covering the applicator opening on the housing. The dispenser in the ventilation duct has a switch valve operable by activating a push-button on the external side of the housing. The protective cap acts on the push-button when placed on the housing or when the protective cap is being placed thereon to open the switch valve.

A dispenser pump has a plunger operable in a body including an outer cylinder body having a vent opening in its sidewall and a body insert fitting into the top of the outer body and providing an external collar through which the plunger stem operates. The body insert has lock-down threads to lock down the plunger for shipping. The insert also has formations for blocking or unblocking the vent opening by rotation between the outer body and body insert, driven by rotation of the plunger head which makes a catch engagement with the top of the body insert. This plunger head rotation is the locking or unlocking action for the plunger lock-down. Blocking the vent during shipping reduces leakage.

Described is a dispenser for dispensing a fluid contained in a plastic bottle, including a ring nut having a cylindrical conduit for sucking the fluid; a concertina-like deformable element including side walls defining a dosing chamber; a ring identifying with the ring nut a locking system defining an operating and non-operating configurations; a dispensing head, which can be pressed by a user and having a collection chamber collecting the fluid flowing from the dosing chamber through a central opening of the ring; first and second shutoff elements defining, respectively, a check valve at the inlet and a check valve at the outlet of the dosing chamber; a locking element interfering with at least one between the first and the second shutoff elements to lock it in the fixed position and thereby occlude the suction conduit and/or the central opening in a stable manner at least in a dispensing configuration.

A manually operated, high pressure pump featuring all plastic construction, is presented. The high pressure is suitable for dispensing liquids in the form of mists. Used pumps do not require disassembly to be recycled.

The invention relates to a device for dosing liquid from a liquid-receiving element (2), in which the liquid-receiving element (2) comprises an outlet valve (1), and a dosing system is available, said dosing system consisting of a first actuating wing (4) and a second actuating wing (5), which are arranged around the liquid-receiving element (2) and can be moved in relation to each other such that they compress the liquid-receiving element (2), a mechanical dosing stop being available.

Fluid product reservoir having a neck defining an opening, the neck having an upper annular edge defining an outer ridge and an inner ridge, the opening being defined by an inner wall connected to the upper annular edge by the inner ridge. At least one cutout is provided at the upper annular edge, this cutout extending on the inner wall, interrupting the inner ridge, but does not extend as far as the outer ridge, such that the upper annular edge is continuous over its entire periphery, including at the cutout, this cutout further forming a base defining a ridge with the inner wall of the opening.

A bag-in-bottle type of a squeeze dispenser comprising a housing, a cap, a flexible bag for containing fluid, and means to equilibrate atmospheric air pressure with air pressure inside the housing is disclosed. Said means include a closable air channel. The closable air channel, and the cap, may each be in an open or a closed position. When the cap is in an open position, the closable air channel is in a closed position, thus substantially locking the air inside the housing in place and allowing for fluid to be dispensed from the flexible bag upon application of pressing force on the sidewalls of the housing. When the cap is in a closed position, the closable air channel is in an open position, allowing for a flow of atmospheric air into, and out of, the dispenser housing and thereby equilibrating the air pressure inside the housing with air pressure of the atmospheric air.

A fluid dispenser includes a housing, a pump, an outlet nozzle, a reservoir, a liquid passage, an air passage, and a refill container. The pump and reservoir are attached to the housing, and both the outlet nozzle and the reservoir are in fluid communication with the pump. The reservoir has at least one engagement member, and the liquid passage and the air passage are located in the engagement member. The refill container has at least one sealing member, and the refill container is configured to be releasably attached to the reservoir such that the refill container is in fluid communication with the reservoir. When the refill container is attached to the reservoir, the engagement member engages the sealing member to cause the liquid passage and the air passage to be in fluid communication with the refill container.