초록 ▼

A Dispenser of fluid product includes a ring nut (2) able to be associated with a container of a fluid product and a dispensing head (7), substantially hollow and coaxially slidable relative to the ring nut. The dispensing head includes a dosing chamber (13) positioned inside the dispensing head, a

A Dispenser of fluid product includes a ring nut (2) able to be associated with a container of a fluid product and a dispensing head (7), substantially hollow and coaxially slidable relative to the ring nut. The dispensing head includes a dosing chamber (13) positioned inside the dispensing head, a dispensing nozzle (11) to allow escape of the fluid product. The dispensing head further includes a deformable membrane (14) fastened to the ring nut and a top wall (9) facing the membrane and defining the dosing chamber in combination with the membrane; the top wall being movable between a first position, distal from the ring nut, in which a volume of the dosing chamber is greatest and the dosing chamber is isolated and at least in part filled with fluid product, and a second position, proximal to the ring nut, in which the volume of the dosing chamber is smallest.

대표청구항 ▼

1. Dispenser of fluid product comprising a ring nut (2) able to be associated with a container of a fluid product and a dispensing head (7), substantially hollow and coaxially slidable relative to said ring nut (2); said dispensing head (7) comprising a closing chamber (13) positioned inside said di

1. Dispenser of fluid product comprising a ring nut (2) able to be associated with a container of a fluid product and a dispensing head (7), substantially hollow and coaxially slidable relative to said ring nut (2); said dispensing head (7) comprising a closing chamber (13) positioned inside said dispensing head (7) and a dispensing nozzle (11) to allow the escape of said fluid product; wherein said dispensing head (7) further comprises a deformable membrane (14) fastened to said ring nut (2) and a top wall (9) facing said membrane (14) and defining said dosing chamber (13) in combination with said membrane (14); said top wall (9) being movable between a first position, distal from said ring nut (2), in which a volume of said dosing chamber (13) is greatest and said dosing chamber (13) is isolated and at least in part filled with said fluid product, and a second position, proximal to said ring nut (2), in which volume of said dosing chamber (13) is smallest; wherein said deformable membrane (14) comprises a plurality of radial stiffening ribs (29) positioned on a surface (14b) external to the dosing chamber (13) of said membrane (14) to favour the elastic return from a deformed configuration to a non deformed configuration of said membrane (14). 2. Dispenser as claimed in claim 1, wherein said top wall (9) is movable from said first position to said second position to dispense said fluid product from said dosing chamber (13); said top wall (9) being movable from said second position to said first position to fill said dosing chamber (13). 3. Dispenser as claimed in claim 1, wherein said membrane (14) presents an upper edge (27) in contact with said top wall (9) of said dispensing head (7) in said first position to isolate said dosing chamber (13); said upper edge (27) being moved away from said top wall (9) of said dispensing head (7) during a shift from said first position to said second position to allow fluid communication between said dosing chamber (13) and said dispensing nozzle (11). 4. Dispenser as claimed in claim 1, wherein said membrane (14) comprises a peripheral band (21) connected to said dispensing head (7). 5. Dispenser as claimed in claim 1, wherein said ring nut (2) comprises a sleeve (15) mounted coaxially thereto and defining a seat (16) for receiving a suction tube (17); said sleeve (15) presenting a hole to put said dosing chamber (13) in fluid communication with said suction tube (17). 6. Dispenser as claimed in claim 5, wherein said membrane (14) comprises a tubular segment (20) fastened coaxially to said sleeve (15) to fasten said membrane (14) to said ring nut (2). 7. Dispenser as claimed in claim 6, wherein said membrane (14) comprises a cylindrical portion (25) connected to said peripheral band (21) and a curved portion (26) connected to said cylindrical portion (25) at said upper edge (27). 8. Dispenser as claimed in claim 7, wherein said membrane (14) further comprises a cone frustum shaped portion (28) positioned between said curved portion (26) and said sleeve (15). 9. Dispenser as claimed in claim 1, further comprising an intake valve (39) obtained integrally with said membrane (14) to regulate passage of said fluid product from said container to said dosing chamber (13). 10. Dispenser as claimed in claim 9, wherein said intake valve (39) comprises a shutter (40) able to be housed in a receiving area (41) obtained on said ring nut (2) and movable between a closed configuration, in which the shutter prevents transit of the fluid product through said container to said dosing chamber (13), and an open configuration in which the shuttle allows the transit of the fluid product from said container to said dosing chamber (13). 11. Dispenser as claimed in claim 1, further comprising locking means (32) active on the dispensing head to prevent involuntary movements of said top wall (9). 12. Dispenser as claimed in claim 11, wherein said locking means (32) comprise a plurality of protrusions (33) with circumference arc shape positioned between a cylindrical wall (3) of the ring nut (2) and a plurality of gaps (36) defined between two successive protrusions (33). 13. Dispenser as claimed in claim 12, further comprising at least one pair of rectilinear ribs (31) positioned on an inner surface (8a) of a cylindrical wall (8) of said dispensing head (7); lower ends (31a) of said rectilinear ribs (31) lying in abutment on said protrusions (33) in a configuration of activation of the locking means (32); said lower ends (31a) of said rectilinear ribs (31) lying at said gaps (36) in a configuration of deactivation of the locking means (32). 14. Dispenser as claimed in claim 2, wherein said membrane (14) presents an upper edge (27) in contact with said top wall (9) of said dispensing head (7) in said first position to isolate said dosing chamber (13); said upper edge (27) being moved away from said top wall (9) of said dispensing head (7) during a shift from said first position to said second position to allow fluid communication between said dosing chamber (13) and said dispensing nozzle (11). 15. Dispenser as claimed in claim 3, wherein said membrane (14) comprises a cylindrical portion (25) connected to said peripheral band (21) and a curved portion (26) connected to said cylindrical portion (25) at said upper edge (27). 16. Dispenser of fluid product comprising a ring nut (2) able to be associated with a container of a fluid product and a dispensing head (7), substantially hollow and coaxially slidable relative to said ring nut (2); said dispensing head (7) comprising a closing chamber (13) positioned inside said dispensing head (7) and a dispensing nozzle (11) to allow escape of said fluid product; wherein said dispensing head (7) further comprises a deformable membrane (14) fastened to said ring nut (2) and a top wall (9) facing said membrane (14) and defining said dosing chamber (13) in combination with said membrane (14); said top wall (9) being movable between a first position, distal from said ring nut (2), in which a volume of said dosing chamber (13) is greatest and said dosing chamber (13) is isolated and at least in part filled with said fluid product, and a second position, proximal to said ring nut (2), in which the volume of said dosing chamber (13) is smallest; wherein further comprising an intake valve (39) obtained integrally with said membrane (14) to regulate passage of said fluid product from said container to said dosing chamber (13); wherein said intake valve (39) comprises a shutter (40) able to be housed in a receiving area (41) obtained on said ring nut (2) and movable between a closed configuration, in which the shutter prevents the transit of the fluid product through said container to said dosing chamber (13), and an open configuration in which the shuttle allows the transit of the fluid product from said container to said dosing chamber (13); wherein said intake valve (39) comprises a plurality of flexible appendages (42) to elastically connect said shutter (40) to said membrane (14) in order to allow said shutter (40) to shift from said open configuration to the closed configuration to move away from said hole (19) to allow the transit of said fluid in the dosing chamber (13). 17. Dispenser as claimed in claim 16, wherein said elastic appendages (42) are “S” shaped. 18. Dispenser of fluid product comprising a ring nut (2) able to be associated with a container of a fluid product and a dispensing head (7), substantially hollow and coaxially slidable relative to said ring nut (2); said dispensing head (7) comprising a closing chamber (13) positioned inside said dispensing head (7) and a dispensing nozzle (11) to allow escape of said fluid product; wherein said dispensing head (7) further comprises a deformable membrane (14) fastened to said ring nut (2) and a top wall (9) facing said membrane (14) and defining said dosing chamber (13) in combination with said membrane (14); said top wall (9) being movable between a first position, distal from said ring nut (2), in which a volume of said dosing chamber (13) is greatest and said dosing chamber (13) is isolated and at least in part filled with said fluid product, and a second position, proximal to said ring nut (2), in which the volume of said dosing chamber (13) is smallest; wherein said ring nut (2) comprises a sleeve (15) mounted coaxially thereto and defining a seat (16) for receiving a suction tube (17); said sleeve (15) presenting a hole to put said dosing chamber (13) in fluid communication with said suction tube (17); wherein said ring nut (5) comprises a cladding (44) positioned externally and coaxially to said sleeve (15); said cladding (44) presenting at least one groove (46); said tubular segment (20) presenting at least one recess (47); said groove (46) and said recess (47) being able to face each other to define an air passage port to balance pressure acting within the container. 19. Dispenser as claimed in claim 18, wherein said cladding (44) is rigidly connected to said sleeve (15) through a plurality of connecting teeth (52).