Dosing Device with Capillary Air Supply
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United States of America Patent
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app pub date -
Aug 23, 2005
filing date -
Sep 9, 2004
priority date (Note) -
Abandoned
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Abstract
The invention relates to a dosing device for at least one medium comprising a pump device, which is actively connected to a medium reservoir for discharging a medium, and comprising a venting device assigned to said medium reservoir. According to the invention, the venting device comprises a capillary channel, which forms a venting path between the medium reservoir and the surrounding area and whose channel length is larger by a multiple than its effective channel diameter. The inventive dosing device is provided for pharmaceutical or cosmetic purposes.
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