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

Claim 3:
4. 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 includes an outer side that abuts in a state pretensioned in an outward direction against an inner side of a peripheral valve web of the base; and
a protective lip which is also formed integrally on the deformable pump chamber component and which is arranged at the outer side of the valve lip in order to protect the valve lip prior to installation in the discharge head.