Patent ID: 9302284
Filing Date: 2016-04-05
CPC Classification: B05B

Claim Text:
1. A trigger dispenser for a liquid comprising: a container having an inner compartment for the containment of the liquid; a dispenser head attachable to the container, comprising: a) a pressure chamber and a piston operable by the trigger and slidable in the pressure chamber, in a dispensing step in which it operates with pressure in the pressure chamber and in a return step in which it operates with suction in the pressure chamber; b) a mouth delimited by a mouth wall, in fluid communication with the pressure chamber, for the passage of the liquid entering the pressure chamber during the return step and exiting the pressure chamber during the active step; c) a dispenser duct suitable for being placed in communication with the pressure chamber via the mouth, for dispensing the liquid outwards; d) a valve dispenser element comprising an engagement wall, the engagement wall: i) in a pre-dispensing sub-step of the active step being engaged so as to sealingly slide with a first portion of the mouth wall to prevent the communication of the pressure chamber with the dispenser duct, and ii) in a dispensing sub-step of the active step, being engaged with a second portion of the mouth wall, provided with passages to allow the communication of the pressure chamber with the dispenser duct.