Applicator head for a dispenser, as well as a dispenser comprising such an applicator head

摘要

An applicator head for discharging media from a reservoir, including a housing with a coupling device for coupling to the reservoir, an inlet opening, an applicator opening for discharging medium into a surrounding atmosphere, a conveying device for conveying the medium from the inlet opening to the applicator opening and an actuating handle, movable relative to the housing to actuate the conveying device.;The housing is a one-piece injection molded part formed from two plastics having different properties. The coupling device is constructed of a first of the two plastics. A ring seal surrounds the inlet opening and is arranged to bear tightly against the reservoir when coupled to the applicator head. A venting valve with an aperture which opens in a pressure-dependent manner and through which ambient air flows from the surrounding atmosphere into the reservoir, is constructed of the second of the two plastics.

主权项

1. An applicator head for coupling to a reservoir for discharging liquid or paste-like medium from the reservoir, the applicator head comprising:
a housing with a coupling device for coupling to the reservoir; an inlet opening facing the reservoir and an applicator opening for dispensing the medium into a surrounding atmosphere; a conveying device for conveying the medium from the inlet opening to the applicator opening; an actuating handle manually movable relative to the housing in order to actuate the conveying device; a one-piece seal and valve device including a ring seal region and a venting valve, the ring seal region being arranged on the applicator head in such a way that the ring seal region bears tightly against the reservoir once the reservoir has been coupled to the applicator head, the venting valve being formed by a curved surface of the one-piece seal and valve device, the curved surface having a slot-shaped aperture, wherein the slot-shaped aperture is closed by resilient deformation of the one-piece seal and valve device, and the slot-shaped aperture opens only with negative pressure on the side of the reservoir.