초록 ▼

A trigger dispenser device for a liquid provides an integral valve element comprising a suction duct and at least one flexible suction lip to obstruct the suction duct during the dispensing phase, and an annular obturator and a flexible flange supporting it, for opening the pressure chamber toward t

A trigger dispenser device for a liquid provides an integral valve element comprising a suction duct and at least one flexible suction lip to obstruct the suction duct during the dispensing phase, and an annular obturator and a flexible flange supporting it, for opening the pressure chamber toward the dispenser duct during the dispensing phase.

대표청구항 ▼

1. A trigger operated liquid dispenser device, comprising: a container provided with a neck and having an inner compartment to contain a liquid to be dispensed;a dispenser head attachable to the neck and comprising a frame in which a pressure chamber is made;a manually activated piston, slidable sli

1. A trigger operated liquid dispenser device, comprising: a container provided with a neck and having an inner compartment to contain a liquid to be dispensed;a dispenser head attachable to the neck and comprising a frame in which a pressure chamber is made;a manually activated piston, slidable sliding sealingly in the pressure chamber between an initial rest position, wherein the volume of the pressure chamber is maximum, and a limit dispensing position, wherein the volume of the pressure chamber is minimal;a dispenser duct suitable for being placed in communication with the pressure chamber for transit of the liquid being dispensed;an integral valve element, applicable to the frame and/or to the neck of the container, comprising:a) a suction duct and at least one flexible suction lip suitable for obstructing the suction duct, to realise valve suction means suitable to permit the transit of liquid from the inner compartment to the pressure chamber during a suction phase and suitable to prevent the return of the liquid from the pressure chamber to the compartment during a dispensing phase;b) an annular obturator positioned radially externally to the suction duct and a flexible flange projecting radially externally to the suction duct, which supports the obturator, to form a valve dispenser, wherein the annular obturator is configured to contact a wall to selectively seal the pressure chamber from the dispenser duct, allow transit of liquid from the pressure chamber to the dispenser duct during the dispensing phase, and to prevent the return of the liquid from the dispenser duct to the pressure chamber during the suction phase. 2. The device according to claim 1, wherein the obturator mainly performs a rigid translation from the limit rest position to the dispensing position. 3. The device according to claim 1, wherein the flange is dome-shaped. 4. The device according to the claim 1, wherein the obturator has a truncated cone lateral surface. 5. The device according to claim 1, wherein the suction lip is separated from the walls of the suction duct by a partial cut. 6. The device according to claim 1, wherein the suction lip is a truncated cone shape and is continuously joined to a rim of the suction duct wall. 7. The device according to claim 1, wherein the valve element comprises a flexible sealing lip, projecting axially from the flange. 8. The device according to claim 7, wherein the sealing lip is radially external to the obturator. 9. The device according to claim 7, wherein the sealing lip (16) is a truncated cone shape. 10. The device according to claim 1, wherein the valve element has a vent duct delimited by a second tube projecting axially. 11. The device according to claim 1, wherein the valve element comprises a flexible peripheral collar for sealed anchorage to the neck. 12. The device according to claim 1, wherein the suction duct is delimited by a first axially flexible tube projecting towards the compartment for the insertion of a feed tube. 13. The device according to claim 1, wherein the frame comprises a main mouth communicating with the pressure chamber, separable from the dispenser duct by the obturator and/or from the suction duct by the suction lip. 14. The device according to claim 1, wherein the valve element comprises a flexible sealing lip projecting axially from the flange, andwherein the frame comprises a secondary mouth which the sealing lip acts on so as to seal. 15. The device according to claim 1, wherein the valve element has a vent duct delimited by a second tube projecting axially, andwherein the frame comprises a vent mouth suitable for being placed in communication with an external environment. 16. The device according to claim 1, wherein a suction axis of the suction duct is orthogonal and incident to the dispensing direction of the liquid.