TRIGGER DISPENSER Russian patent published in 2025 - IPC B05B11/00 B05B11/02 B05B11/10 B05B9/47 

FIELD: spraying; pulverisation.

SUBSTANCE: invention relates to trigger devices for product dispensing. Invention relates to trigger dispensing head and dispenser comprising said head and product bottle. Head comprises a piston, hermetically moving in the piston chamber, a manual trigger connected to the piston, a main wall limiting the main channel exiting from the piston chamber, a wall annularly limiting the suction and supply compartments, an auxiliary and dosing channel communicating with the external environment, an auxiliary element connected to the suction and supply compartment wall, comprising a base and a suction opening passing through it, valve means located in the suction and supply compartment, having a dome-shaped body supported by the base of the auxiliary element, and a deformable annular wall separating the suction and supply compartments, the valve wall has an elastically deformable membrane, the main wall has an inner side surface facing the main channel, outer side surface facing the feed compartment ends with a front surface of a round crown shape connecting the inner and outer side surfaces and facing the suction and feed compartment, membrane contains an annular seal resting against the front surface of the main wall, forming a pre-stressed valve device, with the possibility of product passage to the dosing channel when the preset threshold pressure value in the piston chamber is exceeded.

EFFECT: design of prestressed valve means, containing head seal, forms effective seal, which can be easily implemented.

9 cl, 6 dwg