Patent ID: 7837129
Filing Date: 2010-11-23
Classification: B05B

Abstract:
1. Metering device for dispensing a medium to an environment, comprising: a housing; a shallow metering chamber within the housing, the metering chamber being of planar design and being essentially closed off from the environment by wall sections; a first media inlet which is connected to the metering chamber and can be connected to a media reservoir; a vibration mechanism arranged in such a manner that vibrations generated by the vibration mechanism cause pulsing changes in volume of an internal volume of the metering chamber, the vibration mechanism forming a vibration wall section which delimits the metering chamber; a wall section designed as an outlet wall section, the wall section having metering openings connecting the metering chamber to the environment; and a protective cap provided on a side of the metering openings that faces away from the metering chamber, the protective cap, in a closed state, closing off the metering openings from the environment and, in an open state, opening up the metering openings in relation to the environment, the protective cap being designed as an actuating means for operating the metering device.