The present invention relates to a spray device, comprising a spray nozzle body (2) and a substantially planar membrane layer (6) suspended over a nozzle cavity (3) to generate microjets, especially for pharmaceutical applications, in particular preservative free formulations. The nozzle body (2,8) contains a microbial barrier, particularly a microvalve (23,24) between a fluid supply channel (9) and said cavity (3).

The present invention relates to a dispensing head (1) for a dispensing device, and to a dispensing device (100) for the metered dispensing of liquid preparations, which dispensing device is provided with the dispensing head. The dispensing head comprises a special valve (6), which comprises at least one sealing lip (7a, 7b), by means of which a passage channel (3) for dispensing the liquid preparation, which passage channel is formed in the dispensing head, can be closed. The present invention is characterized by the simplicity of the dispensing head (1) and the economic advantages in the manufacturing which are linked to this simplicity.

A dispenser pump is constituted by a closure body (2), a diaphragm body (3) which forms a pump chamber with the closure body and optionally a top actuator (4) for pressing the diaphragm body (4). The diaphragm body has a deformable wall (35) formed integrally in the same polymer as its annular mounting portion (31). An inlet valve (5) through the floor (21) of the closure body has a flap (52) which is formed and hinged integrally with that floor (21). An outlet valve may also be formed in the same polymer, either integrally with the diaphragm body or as a separate component. The deformable wall of the diaphragm body is shaped to generate a restoring force itself without a separate spring, so that the entire pump may be made from the same polymer e.g. polypropylene and without metal components.

A pump apparatus can include a suction tube, a pliable sealing ring, and an actuator mechanism coupled to the suction tube. The suction tube can be configured to be removably coupled to a container in which the viscous fluid is arranged and be fluidly coupled to an interior of the container and to an output port for outputting the viscous fluid. The pliable sealing ring can be configured to sealingly engage with an interior wall of the container. When the suction tube is coupled to the container and the pliable sealing ring is sealingly engaged with the interior wall of the container, actuating the actuator mechanism can cause the viscous fluid to be suctioned upwardly through the suction tube and output from the output port, ambient air to be drawn into the container, and the pliable sealing ring to move downwardly.

A pump apparatus for a viscous fluid that can include a container in which the viscous fluid is arranged, and a cap configured to be removably coupled to the container. A sealing plate can be sealingly engaged with an interior wall of the container and arranged above the viscous fluid. A stabilizer can be arranged within the container and define a second suction tube aperture. A suction tube can be configured to extend through the first and second suction tube apertures. An actuator mechanism can be coupled to the suction tube. When the suction tube is arranged in an interior of the container, actuating the actuator mechanism can cause: the viscous fluid to be suctioned upwardly through the suction tube and output from an output port, and the sealing plate to move downwardly.

Provided is a medication dispenser configured to discharge a liquid state medication stored therein by a pumping operation in a predetermined amount in a drop state and prevent a noise occurrence during medication discharge, and having a bacteria infiltration prevention function, wherein a flow path member and a second check valve are mounted in a liner, the second check valve is composed of a hemispherical cylinder mounted in an elevation space of the liner, having an open upper part, and of which a diameter decreases toward a lower end and includes a variable part in which the hemispherical cylinder is vertically variable and an opening and closing protrusion configured to perform supply and blocking of a flow path.

A spray device includes a first spray tip having a first fluid pathway defining a first flow area, and a second spray tip includes a second fluid pathway that defines a second flow area that is larger than the first flow area of the first spray tip. The first and second spray tips are side-by-side and spaced from one another at a distal end of the spray device. When a first fluid having a volumetric flow rate is introduced into the first spray tip and a second fluid having the same volumetric flow rate is introduced into the second spray tip, the first fluid will flow through the first fluid pathway at a greater velocity than the second fluid will flow through the second fluid pathway.

DISPENSER DEVICE WITHOUT AIR INTAKE FOR NOZZLES FOR VARIOUS TYPES OF FLEXIBLE PACKAGING, with an outlet chamber (1) that is hermetically controlled by a plug (2), an elastomeric valve (3) and an elastic pad (18); the vertical outlet chamber (1) is defined by a cylindrical capsule (4) and any nozzle (5) together with an internal elastomeric mass (6); the lower capsule (4) has a sealing seat (7) housing the plug (2), which works jointly with an elastic pad (18), so that between it and the lower capsule (4) a passage is formed for the product to be dispensed; the lower capsule (4) and the nozzle (5) are combined with variable parts (8a) and (8b) coupling with the nozzle (9) of any flexible container (10); the plug (2) is housed in the sealing seat (7) with enough clearance to be moved up and down when internal pressure occurs or ceases inside the flexible container (10) and allows the product to pass through the sealing seat (7) or to close it tightly; the elastomeric valve (3) has an elastic opening point (11) designed to open and close when the pressure inside the flexible container is interrupted or present (10).

A spray cap for a spray container includes a tubular wall for connection to the spring container, a cap plate in which a plurality of spray slits is formed and a valve to admit air into the space defined by the wall but which prevents the outflow of liquid from the space to the exterior. The cap plate includes a support plate of polymeric material in which an aperture is formed. An insert of more resilient polymeric material is retained in the aperture and forms a liquid-tight seal with the support plate. The spray slits are formed in the insert. The support plate and the insert define a liquid flow path between the space and the spray slits and include respective opposed annular sealing areas which are situated upstream of the spray slits and are biased into contact with one another by the resilience of the insert. When the spray cap is inverted and an increased pressure is produced in the space the pressure acts on the insert and the insert is thereby caused to deform such that the sealing areas move out of sealing contact and liquid can flow to the spray slits.

A dispensing device for fluid products includes a draw-up pipe, a main body and a dispensing head. The main body includes a pumping system, connected to the draw-up pipe and a fastening ring nut, for fixing the dispensing device to a container for fluid products. The fastening ring nut and the pumping system are mutually coupled for forming between them an air compensation duct which allows the selective passage of air from the outside towards the inside of the container during the operation of the dispensing device. The dispensing head in turn includes a cup, which has in a relative lower portion a passage, and a valve, housed in the lower portion of the cup, configured to adopt a first configuration, or open configuration, wherein the passage is put in fluid communication with the pumping system and a second configuration, or closed configuration, wherein the passage is occluded.