A liquid pump is provided, including a pump body and a valve seat, the pump body is an integral part integrally formed by the same material, the pump body includes a shell with a hollow pump cavity and an elastic valve plate disposed at a bottom end portion of the shell, and the elastic valve plate is provided with a valve passage, the valve seat is disposed below the elastic valve plate in a fitted manner, the valve seat includes a valve body with a liquid flow passage, and the top of the valve body is provided with a seal structure that can be fitted with the elastic valve plate in a sealed manner. The product assembly is more convenient, product durability is high, and all components can be fully recycled.

A foam dispenser with a pump mechanism that mixes a liquid with air to generate foam. The pump mechanism includes a first stage pump and a second stage pump. The first stage pump delivers the liquid and a first volume of the air through a first foam generator to generate a first foam. The second stage pump delivers the first foam and a second volume of the air through a second foam generator to generate a second foam.

A liquid dispenser having a liquid reservoir and a discharge head secured thereto, an outlet valve with a pressure chamber and an opposite valve chamber. The liquid reservoir and the valve chamber are each connected at least in phases to a surrounding atmosphere by a ventilation channel. The two channels provided for this purpose, the reservoir ventilation channel and the valve ventilation channel, are separate channels with separate inlets on an outer face of the discharge head.

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.

A discharge head for a liquid dispenser having a base, an actuation handle, a liquid inlet and a discharge opening. The discharge head has a pump mechanism which conveys liquid from a liquid store to the discharge opening. To control liquid to be discharged and/or inflowing air, the discharge head has a valve with a valve flap which closes a valve channel and transfers to an open position by a positive pressure that exceeds a threshold positive pressure. The discharge head has an effector element bearing on the handle and the base, which deforms when the handle is pressed down. The valve flap is designed and attached to the effector element such that the deformation of same acts on the valve flap so that the threshold positive pressure, beyond which the valve flap leaves its closed position, is at least 10% lower in an actuated end position than in a non-actuated end position.

Fluid product dispenser (D) having a reservoir (R) defining a bottom (R1) and an opening (R2), and a dispensing head (T) integrating a dispensing member (P) defining a vent path through which outside air can penetrate into the reservoir (R). The dispensing member (P) has a dip tube (TP) that extends into the reservoir (R), the dip tube (TP) having an inlet (Ti) close to the bottom (R1) of the reservoir (R). The inlet (Ti) of the dip tube (TP) is provided with a shut-off valve (V) having a movable member (V6) and a seat (V5), the movable member (V6) is urged into sealed contact with the seat (V5) by the fluid product when the dispenser (D) is upside down, while the movable member (V6) is urged away from the seat (V5) by the fluid product when the dispenser (D) is upright.

A pump assembly which provides a frangible air vent mechanism for providing communication between the atmosphere and the interior of a bottle to which the pump assembly is to be coupled. A vent port is provided through a bottle cap member having an inner end open into the bottle and an outer end open to the atmosphere. A frangible plug member is received in the vent port with the frangible plug member when unbroken preventing flow through the vent port and the plug member when broken permitting flow through the vent port. A vent tab member is coupled to the frangible member with the vent tab member extending from the frangible member accessible on the exterior of the bottle cap member for engagement to apply forces to the vent tab that are translated to the frangible vent member to break the frangible member.

A foam dispenser with a pump mechanism that mixes a liquid with air to generate foam. The pump mechanism includes a first stage pump and a second stage pump. The first stage pump delivers the liquid and a first volume of the air through a first foam generator to generate a first foam. The second stage pump delivers the first foam and a second volume of the air through a second foam generator to generate a second foam.

Pump dispenser comprising a pump and a container for liquid to be dispensed, the pump comprising a pump body mounted in the neck of the container and a plunger reciprocable relative to the pump body to alter the volume of a pump chamber defined in the pump body and having an inlet and an outlet, the outlet leading through an outlet passage to a discharge opening. The pump cylinder body is retained at the container neck. A vent is provided in the cylinder body wall adjacent the neck edge. A vent block ring is disposed in the cylinder body adjacent the vent, and is moveable between blocked and unblocked positions relative to the vent. The vent block ring has an integral upward projecting formation which is engaged by part of the plunger in a locked-down position of the plunger, so that when the plunger is locked down the vent block element blocks the vent, while in a relatively extended position of the plunger the vent block element is in the unblocked position.

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 body cylinder and providing an external collar through which the plunger stem operates. The body insert has a lock-down thread to lock down the plunger for shipping. The insert also has an undulating annular vent-control bead extending right round its cylindrical outer surface, engaging the cylinder wall with interference for either blocking or unblocking the vent opening, according to whether the vent-control bead lies above or below the interior vent opening, by rotation between the body cylinder and body insert. The rotation can be driven by rotation of the plunger head, which makes a catch engagement with the top of the body insert. Blocking the vent during shipping reduces leakage.