Abstract: A trigger dispenser (1) for liquids comprises a suction valve (30) comprising a diaphragm (32) housed in the pumping chamber (4) and a delivery valve (60), separate from the suction valve (30), comprising a baffle (62) external to the dispensing pipe (14). The diaphragm (32) of the suction valve (30), during liquid dispensing, abuts on the bottom wall (10b) of the pumping chamber (4) land covers the suction opening (6a), and the baffle (62) of the delivery valve (60), during the return, abuts on the crown surface (18) which surrounds the inlet opening (14a) of the dispensing pipe (14).

Abstract: A trigger dispenser (1) for liquids comprises a suction valve (30) and a delivery valve (60), separate from the suction valve (30). The dispenser (1) has a detachable stop (100), comprising a bottom (104) positioned rearwards of the delivery valve (60) to form an end stop abutment with this during the dispensing step.

Abstract: A connection system between a dispenser head of a liquid and a container of a liquid includes a base area of a structure and a flange screwed tight onto the neck of the container. Free rotation of the structure is prevented by a resistant torque, but the base area of the structure is made in such a way as to allow the accidental rotation of the head without unscrewing the flange.

Abstract: A dispenser device head (1) of a liquid is provided with a nozzle (20) comprising a lateral wall (30) having through signalling apertures (40) defining a caption or symbol to highlight a functioning configuration.

Abstract: A dispenser head (1) comprises a main body (2), an arm (60) hinged to the main body (2) and pumping means. The pumping means comprise a main cylinder (12), a sliding piston (16), dispensing means sensitive to pressure. The arm (60) is hinged to the main body (2) in a hinging portion (60b) distanced radially from the body axis (X), straddling the body axis (X) and transmitting an axial translation movement to the piston (16) by means of an elastically yielding element (30). A removable lock or tab can be included as a safety means.

Abstract: A dispenser head (1) comprises a main body (2), an arm (60) hinged to the main body (2) and pumping means. The pumping means comprise a main cylinder (12), a sliding piston (16), dispensing means sensitive to pressure. The arm (60) is hinged to the main body (2) in a hinging portion (60b) distanced radially from the body axis (X), straddling the body axis (X) and transmitting an axial translation movement to the piston (16) by means of an elastically yielding element (30).

Abstract: A liquid dispenser has an intermediate body which permits the dispenser head to rotate freely on its container, until the intermediate body is hand-blocked from rotating.

Abstract: The invention relates to a fluid dispensing device with an elastic return or a biasing component that is outside the pumping chamber. When the trigger to the pump is activated the elastic return twists forming a torsion return force. The arrangement improves reliability of the pump device significantly.

Abstract: A device for dispensing at least one fluid comprises pumping means comprising an elastic deformable membrane (2) having a wavy annular wall (16) for producing a desired stiffness or pliability for said membrane (2). A pumping element (1) comprises a base (4) and said elastic deformable membrane (2).

Abstract: A connection system between a dispenser head of a liquid and a container of a liquid includes a base area of a structure and a flange screwed tight onto the neck of the container. Free rotation of the structure is prevented by a resistant torque, but the base area of the structure is made in such a way as to allow the accidental rotation of the head without unscrewing the flange.

Abstract: The present invention is a fluid dispensing device, connectable/disconnectable to/from a container. The device, actuable by a trigger, comprises both closing means comprising a turnable nozzle and means for locking the sliding of a dispensing piston.

Abstract: The object of the present invention is a head of a fluid dispensing device, provided with elastic return means, outside the pumping chamber, comprising a return element provided with an elastic portion which when the trigger is actuated, is mainly subject to a torsion status. The head exhibits considerably improved reliability.

Abstract: The object of the present invention is a fluid dispensing device (1), connectable/disconnectable to/from a container and a method of using the device. The device, actuable by a trigger (80), comprises both closing means comprising a turnable nozzle (50) and means for locking the sliding of a dispensing piston (14).

Abstract: A device for dispensing at least one fluid comprises pumping means comprising an elastic deformable membrane (2) having a wavy annular wall (16) for producing a desired stiffness or pliability for said membrane (2). A pumping element (1) comprises a base (4) and said elastic deformable membrane (2).