A dispensing head for a trigger dispenser includes a frame having a functional zone on which a frame port, a suction outlet port and a dispensing inlet port open. A valve device applied to the functional zone includes a suction shutter and a dispensing shutter that implements a precompression of products before dispensing. The valve device cooperates with a reference plane of the frame to form a precompression chamber upstream of the dispensing inlet port.

A liquid dispensing device includes a multifunction membrane valve that, in addition to allowing the dispensing of drops with a drop-check mechanism, ensures and isolates the passage of the air to be filtered so that it does not contaminate the liquid in the interior of the dispensing device; it has a reduced number of parts; it facilitates proper assembly by counter pressure, without the need for threads or complex coupling elements; it avoids the need for rotational alignment when assembling the parts, among other advantages.

A dispensing pump mechanism is provided. The pump comprises integrally molded temper-evidence part between a container collar and a spout; said collar has multiple off-centre outlet channel for dispensing one or more products from the container; said collar also comprises an integrated air vent to be blocked and opened by the rotation of the spout. The whole pump can be over-molded one-piece structure with elastic parts as being actuating parts. The pump improves the functions of the pump, such as lower restitution rate, less structural parts, lower cost, water/dust proof, lightweight, easy assembly.

Exemplary embodiments of pumps having positive pressure venting and refill units are disclosed herein. An exemplary pump includes a liquid pump chamber, a liquid piston, a first air pump chamber, and a first air piston and a mixing area in fluid communication with the liquid pump chamber and the first air pump chamber. The exemplary pump further includes a second air pump chamber and a second air pump piston. The second air pump chamber is configured for pumping air into a container and the first air piston and the second air piston move in unison.

A method is provided for the re-filling with product of a travel dispenser (10) which has two assemblies (12, 14) which are connected together mechanically for dispensing the product. A first assembly (12) includes a bottle (10) of the product, a venting passage which is able to be opened to connect the interior and the exterior of the bottle and a pump (22) mounted on the bottle which is able to assume an upper rest position in which the passage is closed and a lower position in which the passage is open. A second assembly (14) includes a product dispensing device (16). The method includes blocking of the pump (22) in the lower position, and disengagement of the two assemblies (12, 14) from one another in order to allow the bottle (10) to be re-filled with product through the open venting passage of the first assembly (12) in re-fill mode.

A piston pump for dispensing fluid from a reservoir, an improved vacuum relief arrangement in which a passageway for flow of air from the atmosphere into the reservoir is provided at least in part through a piston-forming element of the piston pump.

A pump system may include a blown-in dip tube connected to a valve body and having a connection which may include an improved blown-in dip tube connector having one or more of a lip for sealing with a blown-in dip tube, a seal ring configured to mate with a blown-in dip tube and seal therewith, a dip tube lock for mating with a blown-in dip tube, or an o-ring for providing an improved seal with a blown-in dip tube.

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.

A dispensing pump mechanism is provided. The pump comprises integrally molded temper-evidence part between a container collar and a spout; said collar has multiple off-centre outlet channel for dispensing one or more products from the container; said collar also comprises an integrated air vent to be blocked and opened by the rotation of the spout. The whole pump can be over-molded one-piece structure with elastic parts as being actuating parts. The pump improves the functions of the pump, such as lower restitution rate, less structural parts, lower cost, water/dust proof, lightweight, easy assembly.

A trigger type liquid ejector includes an ejector body and nozzle, the ejector body includes a vertical supply pipe, ejection barrel, trigger, piston, and cylinder, a recovery passage brings the cylinder in communication with the vertical supply pipe via a space between a piston body and a piston guide of the cylinder formed in the ejector body, the vertical supply pipe has a lower inner tube part where the recovery passage opens, the trigger type liquid ejector further includes an upright and inverted posture adaptor attached into the lower inner tube part where communication between the recovery passage and an inside of a container body is blocked, and a communication passage brings the recovery passage in communication with the inside of the container body forms between an outer circumferential surface of the upright and inverted posture adaptor and an inner circumferential surface of the lower inner tube part.