Patent ID: 11938495
Assignee: APTAR RADOLFZELL GMBH
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 5:
6. A discharge head for a liquid dispenser for dispensing pharmaceutical liquids or cosmetic liquids, the discharge head comprising:
a base and a push actuator which can be pressed down with respect to the base between an unactuated end position and an actuated end position in an actuation direction;
a liquid inlet for connection to a liquid store and a discharge opening for discharging liquid in an environment;
a pump device which comprises a deformable pump chamber component which is open at both sides and which is secured to the base and to the push actuator and which surrounds a pump chamber being variable in terms of volume and which has an inlet valve and an outlet valve;
at least one ventilation opening which extends through the base and which is associated with a ventilation valve;
the ventilation valve having a peripheral valve lip which is formed integrally on the deformable pump chamber component and which abuts in a state pretensioned in an outward direction against a peripheral valve web of the base;
a tilting member which protrudes radially over the peripheral valve lip and which is formed integrally on the pump chamber component; and
a switching face provided on the push actuator and which faces in a direction of the tilting member and which in the actuated end position acts with force on the tilting member and thereby lifts the valve lip of the ventilation valve from the valve web or facilitates pressure-related lifting of the valve lip from the valve web.