Patent ID: 8348096

Claim:
A discharge device for a liquid media, having first and second housing sections movable relative to one another along a total stroke between a non-actuated rest position and an actuated end position and together forming an actuating device for manual discharge actuation, a media reservoir for storage of liquid media prior to discharge, the media reservoir containing liquid media and having a liquid-free portion containing air, the media reservoir being partially limited by: a first wall which is stationary relative to the first housing section; a second wall which is stationary relative to the second housing section; and a third wall formed by a variable-shape intermediate component fastened to the first housing section and to the second housing section, and a conveying device with a discharge opening and a dosage chamber, wherein the actuating device and the conveying device are operatively coupled such that during a first partial stroke of the manual discharge actuation starting from the rest position the media reservoir and the dosage chamber are in communicating connection, and during a second partial stroke of the manual discharge actuation following the first partial stroke the media reservoir and the dosage chamber are separated from one another, while the volume of the dosage chamber is reduced by the second partial stroke of the manual discharge actuation such that the media is pressed out of the dosage chamber to the discharge opening, the media reservoir being operatively coupled with the actuating device such that the manual discharge actuation of the actuating device during the second partial stroke, simultaneously with the reduction of the volume of dosage chamber, causes a volume reduction of the media reservoir by compressing the air in the media reservoir.