A dosing apparatus suitable for dispensing a dose of liquid from a resilient squeezable container including a cap, suitable for attachment to the container, the cap comprising an expulsion channel for the expulsion of liquid; a dosage chamber attached to the cap, the dosage chamber comprising side walls; at least one inlet opening in the side walls proximal to the cap; a pressure chamber located underneath the dosage chamber; a valve provided at the end of the pressure chamber distal to the dosage chamber, the valve being movable from an open position, allowing liquid to flow through one or more discharge openings, and a closed position where the valve closes each discharge opening, the valve incorporating at least one aperture; and a plunger provided in the dosage chamber, and movable relative to the dosage chamber so as to advance upon squeezing of the container, up to a blocking position.

Disclosed is a pump head with a specially configured elastic valve which enables secure closure of the pump head. It is ensured by the valve that complete emptying and, at the same time, secure closing of the pump head is ensured so that no residues of fluid to be metered remain in the storage state of the pump head. In addition, the present invention relates to a metering device which can be configured for example as squeeze bottle, as non-airless system or as airless system, the metering device comprising a pump head according to the invention.

Disclosed is a pump head with a specially configured elastic valve which enables secure closure of the pump head. It is ensured by the valve that complete emptying and, at the same time, secure closing of the pump head is ensured so that no residues of fluid to be metered remain in the storage state of the pump head. In addition, the present invention relates to a metering device which can be configured for example as squeeze bottle, as non-airless system or as airless system, the metering device comprising a pump head according to the invention.

The device for packaging and dispensing a product including a storage container (12) provided with at least one variable-volume compartment (22) containing the product, a pressurizing means (30) able to permanently pressurize the product contained in the compartment, and a dispensing head (14) having a mounting base (32) attached to the container. The dispensing head further includes a dispensing member (34) mounted inside the mounting base (32) with the ability to move in rotation, a piston (36) with the ability to move in translation inside the dispensing member (34) and able to delimit, inside the said member, opposing first and second metering chambers (60, 62), and at least first and second orifices (56, 58) formed on the dispensing member (34) and respectively able to be in direct fluidic communication with the first and second metering chambers (60, 62).

A portable liquid dispensing device which includes a liquid cartridge containing a prefilled desired liquid supported within the dispensing device. A dispensing mechanism is positioned within the device for engagement with the liquid cartridge for dispensing a desired amount of liquid from the liquid cartridge to an outlet exiting the device. An actuator button is also provided for actuating the dispensing mechanism and dispensing the desired amount of liquid through the outlet of the dispensing device. The dispensing mechanism includes a central shaft with a first end engaged with the actuator button, a second end is positioned adjacent the outlet, and a plunger assembly is supported on the central shaft intermediate the first and second ends for substantially sealed engagement with an internal surface of the liquid cartridge and central shaft to move the plunger assembly and liquid toward the outlet upon actuation of the actuator button. Upon deactivation of the actuator button, the central shaft slidably moves or retracts through the plunger assembly, without moving the plunger assembly.

A portable liquid dispensing device which includes a liquid cartridge containing a prefilled desired liquid supported within the dispensing device. A dispensing mechanism is positioned within the device for engagement with the liquid cartridge for dispensing a desired amount of liquid from the liquid cartridge to an outlet exiting the device. An actuator button is also provided for actuating the dispensing mechanism and dispensing the desired amount of liquid through the outlet of the dispensing device. The dispensing mechanism includes a central shaft with a first end engaged with the actuator button, a second end is positioned adjacent the outlet, and a plunger assembly is supported on the central shaft intermediate the first and second ends for substantially sealed engagement with an internal surface of the liquid cartridge and central shaft to move the plunger assembly and liquid toward the outlet upon actuation of the actuator button. Upon deactivation of the actuator button, the central shaft slidably moves or retracts through the plunger assembly, without moving the plunger assembly.

A dosing apparatus suitable for dispensing a dose of liquid from a resilient squeezable container including a cap, suitable for attachment to the container, the cap comprising an expulsion channel for the expulsion of liquid; a dosage chamber attached to the cap, the dosage chamber comprising side walls; at least one inlet opening in the side walls proximal to the cap; a pressure chamber located underneath the dosage chamber; a valve provided at the end of the pressure chamber distal to the dosage chamber, the valve being movable from an open position, allowing liquid to flow through one or more discharge openings, and a closed position where the valve closes each discharge opening, the valve incorporating at least one aperture; and a plunger provided in the dosage chamber, and movable relative to the dosage chamber so as to advance upon squeezing of the container, up to a blocking position.

The present invention relates to a pump head that enables a metered dispensing of fluids. The present invention also relates to a metering apparatus that can, for example, be configured as a squeeze bottle, wherein the metering apparatus comprises a pump head in accordance with the invention.

The present invention relates to a pump head that enables a metered dispensing of fluids. The present invention also relates to a metering apparatus that can, for example, be configured as a squeeze bottle, wherein the metering apparatus comprises a pump head in accordance with the invention.

An example apparatus includes a housing including an inlet and an outlet. The example apparatus also includes a rotor defining a bore. The rotor is disposed in the housing. The example apparatus further includes a piston disposed in the bore. A motor is operatively coupled to the rotor to rotate the rotor from a first position to a second position. The bore is to be in fluid communication with the inlet and the outlet when the rotor is in the second position.