An exemplary refill unit for a dispenser includes an inverted non-collapsing container for holding a liquid. A pump housing is secured to the bottom of the inverted non-collapsing container. The pump housing includes a pump chamber for pumping fluid out of the inverted non-collapsing container. The pump housing includes an annular venting chamber. The annular venting chamber has a floor with an opening therethrough. A vent valve is located within the venting chamber. The vent valve has a first wiper seal in contact with a wall of the annular venting chamber.

A dispenser, which has a pump chamber formed by a body including a depression, and a lid body covering an opening of the body, where a liquid in the pump chamber is discharged front a nozzle portion by performing a discharge operation that presses the lid body toward an inside of the pump chamber to deform the lid body, and a liquid is caused to flow into the pump chamber when the discharge operation is released. A coil spring that urges the lid body to an outside of the pump chamber is included in the pump chamber, a diameter of the coil spring is larger than a radius of the lid body, and a deformation amount of the lid body is equal to or more than of a diameter of the lid body.

An applicator head for discharging a pasty medium from a container, including a metering chamber, a first housing part bounding the metering chamber in sections, with an actuating element, and a second housing part. The first housing part and the second housing part form a constructional unit connectable to a container storing the medium and closing the container. By actuating the actuating element, the medium is conveyed out of the container into the metering chamber and/or is discharged from the metering chamber. A sealing element of a plastically or elastically deformable plastic is provided, and is arranged such that the container is closable in a sealing manner by the constructional unit. The sealing element is manufactured as a common component with at least one further element of the applicator head.

A sealed delivery system for dispensing metered volumes of a pure or sterile flowable substance is presented. In exemplary embodiments of the present invention, a hand-held sealed delivery system comprises a continuously sealing one-way valve assembly at a distal end, and a volume reducing reservoir at a proximal end. The pure or sterile flowable substance can be stored in the volume reducing reservoir. In operation, a user pushes down upon a push button driven actuator assembly, acting upon a metering pumping chamber, which is in fluid communication with the pure or sterile flowable substance stored in the volume reducing reservoir via a check valve. Depression of the push button driven actuator causes a dispensing pump to push a metered volume of flowable substance through the continuously sealing one way dispensing valve assembly. Return of the push button driven activator to its home state causes the dispensing pump to pull a metered volume of the contained flowable substance from the volume reducing reservoir and through the check valve. In exemplary embodiments of the present invention, a continuously sealing one way dispensing valve assembly prevents any backflow of contaminants through the dispensing orifice when the flowable substance ceases to flow, while the materials and sealed assembly of the overall dispensing delivery system prevent other means of contamination of the remaining pure or sterile substance contained within. In exemplary embodiments of the present invention, one or more components of the continuously sealing one way dispensing valve assembly, or of the delivery system general, can be bacteriostatic, bactericidal, or both.

A dispenser has a body with a storage chamber for storing product. A one-way valve of the dispenser includes a valve seat and flexible valve cover seated on the valve seat and defining a normally-closed seam therebetween forming a fluid-tight seal between the valve cover and valve seat. The flexible valve cover is movable relative to the valve seat to allow the passage of substance through the seam and out of the dispenser.

A device for dispensing a fluid, which includes: a feed pipe, a dispensing pipe arranged in order to convey a fluid in a dispensing direction, a deformable pouch, a feed valve, which, in an open state, allows fluid to pass from the feed pipe to the inside of the pouch, and, in a closed state, does not allow this, and a dispensing valve, which, in an open state, allows fluid to pass from the inside of the pouch to the dispensing pipe, and, in a closed state, does not allow this, wherein the dispensing valve is held in the device by tightening between inner walls of the dispensing pipe.

An outlet valve assembly for a fluid dispenser of a type having a pump fluidically coupled to a fluid reservoir includes an outlet nipple having a proximal end configured to be fluidically coupled to the pump and a distal end opposite the proximal end. The outlet nipple defines a conduit extending in a flow direction and has an annular protrusion extending radially inwardly intermediate the proximal end and the distal end. An outlet nozzle is coaxially received within the distal end of the outlet nipple. A resiliently deformable valve member is received within the conduit. The valve member includes a valve head portion having one or more slits defining an orifice and a peripheral valve portion outward of the valve head portion. The peripheral valve portion is retained between the annular protrusion of the outlet nipple and an end edge surface of the outlet nozzle.

Apparatuses and techniques are provided for dispensing fluid from a dispenser that includes a flexible membrane having different levels of pliability according to a voltage applied to the flexible membrane. According to some embodiments, a biasing device, such as a spring, is disposed on a first side of the flexible membrane and is configured to apply pressure to the flexible membrane. When a first voltage is applied to the flexible membrane, the flexible membrane becomes sufficiently pliable to enable the spring to flex the flexible membrane, pushing the flexible membrane into a pumping chamber disposed on the opposite side of the flexible membrane relative to the spring. The fluid is stored in the pumping chamber and the flexing of the flexible membrane causes the pumping chamber to compress. Such compression of the pumping chamber forces the pumping chamber to dispense the fluid through a pump outlet.

A pen-type cosmetic dispenser for discharging a cosmetic medium, including an elongate housing extending in a main direction of extent, a discharge opening at an end face of the housing, a liquid reservoir arranged inside the housing, and a pumping device arranged inside the housing, which pumping device can be actuated by an actuating handle arranged on a lateral surface of the housing. The pumping device has a pump chamber, which is connected to the liquid reservoir on an inlet side and to the discharge opening on an outlet side. The pump chamber is delimited at least in sections by a wall which is flexible in shape, wherein the exterior surface of the wall forms the actuating handle.

A discharging device for liquids. The invention relates to a discharging device for liquids, more particularly for pharmaceutical liquids, comprising a delivery device (10), a liquid storage receptical (20) communicating with an input (10a) of the delivery device for storage of the liquid (30), and a discharge orifice (12) which communicates with an outlet (10b) of said delivery device, and the liquid storage receptical (20) is at least in part in the form of a dimensionally flexible liquid-containing bag (20) and the liquid storage receptical (20) is disposed in a buffer chamber of constant volume (42). To prevent air from escaping from the buffer chamber (42), provision is made for the buffer chamber to be sealed by a protective housing from the environment (1) in a gas-tight manner, for the buffer chamber to communicate with the environment through at least one capillary passageway for the purpose of pressure compensation, or for the buffer chamber (42) to communicate with the environment (1) via a balancing passageway for the purpose of pressure compensation, while a valve (70) which opens in dependence on the pressure differential is disposed in this balancing passageway.