초록 ▼

A dispenser of fluid products includes a ring nut (2) able to be associated to a container of a fluid product and a substantially hollow dispensing head, able to slide coaxially relative to the ring nut (2); the dispensing head (8) includes a dosing chamber (14) obtained within the dispensing head (

A dispenser of fluid products includes a ring nut (2) able to be associated to a container of a fluid product and a substantially hollow dispensing head, able to slide coaxially relative to the ring nut (2); the dispensing head (8) includes a dosing chamber (14) obtained within the dispensing head (8) and a dispensing nozzle (12) to allow the outflow of the fluid product; the dosing chamber (14) has a containment volume variable between a configuration of maximum volumetric capacity when the dosing chamber (14) is isolated and a configuration of minimum volumetric capacity; the dispenser further includes a deformable membrane (15) fastened to the ring nut (2) and a deformable disc-shaped body (16) fastened to the dispensing head (8) and defining the dosing chamber (14) in combination with the membrane (15).

대표청구항 ▼

1. Dispenser of fluid products comprising a ring nut (2) able to be associated to a container of a fluid product; a substantially hollow dispensing head (8) able to slide coaxially relative to said ring nut (2); said dispensing head (8) comprising a dosing chamber (14) obtained inside said dispensin

1. Dispenser of fluid products comprising a ring nut (2) able to be associated to a container of a fluid product; a substantially hollow dispensing head (8) able to slide coaxially relative to said ring nut (2); said dispensing head (8) comprising a dosing chamber (14) obtained inside said dispensing head (8) and a dispensing nozzle (12) to allow the outflow of said fluid product; said dosing chamber (14) having a containment volume that can vary between a configuration of maximum volumetric capacity when said dosing chamber (14) is isolated and a configuration of minimum volumetric capacity; said dispenser being characterised in that it further comprises a deformable membrane (15) fastened to said ring nut (2) and a deformable disc-shaped body (16) fastened to said dispensing head (8) and defining said dosing chamber (14) in combination with said membrane (15); wherein said membrane (15) presents an upper edge (15b) in contact with a lateral edge (16a) of said disc-shaped body (16) when said dispensing head (8) is in said first position to isolate said dosing chamber (14); said upper edge (15b) being moved away from said lateral edge (16a) of said disc-shaped body (16) during a passage from said first position to said second position of said dispensing head (8) to allow fluid communication between said dosing chamber (14) and said dispensing nozzle (12). 2. Dispenser as claimed in claim 1, characterised in that said dispensing head (8) is movable between a first position in which the disc-shaped body (16) is distal from said membrane (15) and said dosing chamber (14) assumes said configuration of maximum volumetric capacity and a second position in which the disc-shaped body (16) is proximal to said membrane (15) and said dosing chamber (14) assumes said configuration of minimum volumetric capacity. 3. Dispenser as claimed in claim 1, characterised in that said membrane (15) comprises a tubular segment (19) for coupling with said ring nut (2); said tubular segment (19) defining a conduit (20) for the passage of said fluid from said container to said dosing chamber (14). 4. Dispenser as claimed in claim 3, characterised in that it further comprises a closure element (29) that occludes said conduit (20) when said dosing chamber (14) is in said configuration of maximum volumetric capacity to prevent the transit of said fluid. 5. Dispenser as claimed in claim 4, characterised in that said dispensing head (8) comprises a pivot pin (27) developing in said dosing chamber (14), said pivot pin (27) comprising a diverging body (28) positioned at its distal end (27b) from the dispensing head (8) to define said closure element (29). 6. Dispenser as claimed in claim 4, characterised in that said tubular segment (19) comprises a ring (30) that is coaxial and internal to said tubular segment (19), said ring (30) being able to come in contact with said closure element (29) to achieve the closure of said conduit (20). 7. Dispenser as claimed in claim 5, characterised in that said disc-shaped body (16) is connected to said pivot pin (27) at its proximal end (27a) to said dispensing head (8). 8. Dispenser as claimed in claim 1, characterised in that said disc-shaped body (16) comprises a cone frustum shaped central portion (16b) having a predetermined angle of aperture and a peripheral portion (16c) with curved section having convexity oriented towards said dosing chamber (14). 9. Dispenser as claimed in claim 1, characterised in that said membrane (15) comprises a peripheral band (21) extending from said upper edge (15b) and integrally associated to said dispensing head (8). 10. Dispenser as claimed in claim 1, characterised in that it further comprises a sleeve (32) rigidly fastened to said ring nut (2), said sleeve (32) being able to support a suction tube (33), and an inflow valve (34) able to regulate the transit of said fluid into said dosing chamber (14). 11. Dispenser as claimed in claim 10, characterised in that said inflow valve (34) comprises a ball (35) able to be housed in a housing seat (36) defined at least in part by a cone frustum shaped portion (32a) of said sleeve (32). 12. Dispenser as claimed in claim 11, characterised in that it comprises a stop (37) positioned within a tubular segment (19) of said deformable membrane (15) at said housing seat (36) to limit the travel of said ball (35). 13. Dispenser as claimed in claim 12, characterised in that said stop (37) comprises an extension (38) obtained in a single piece with said ring (30). 14. Dispenser as claimed in claim 1, characterised in that it further comprises locking means (39) active on the dispensing head (8) to prevent involuntary movements of said dispensing head (8). 15. Dispenser as claimed in claim 14, characterised in that said locking means (39) comprise a plurality of circumference arc protrusions (40) positioned on a cylindrical wall (3) of the ring nut (2) and a plurality of openings (43) defined between two successive protrusions (40). 16. Dispenser as claimed in claim 15, characterised in that it further comprises at least one pair of rectilinear ribs (26) positioned on an inner surface (9a) of a cylindrical wall (9) of said dispensing head (8); lower ends (26a) of said ribs (26) abutting on said protrusions (40) in a configuration of activation of the locking means (39); said lower ends (26a) of said ribs (26) lying at said openings (43) in a configuration of deactivation of the locking means (39). 17. Dispenser as claimed in claim 1, characterised in that it further comprises compensating means (46) to maintain the pressure within the container constant and equal to atmospheric pressure following a dispensation of the fluid. 18. Dispenser as claimed in claim 17, characterised in that said compensating means (46) comprise at least one longitudinal recess (47) obtained on an inner surface (17b) of a cylindrical segment (17) of said ring nut (2) and at least one corresponding longitudinal groove (48) obtained on an outer surface (19b) of a tubular segment (19) of the membrane (15), said groove (48) being able to face said recess (47) to allow a fluid communication between said container and an outside environment.