Patent ID: 8382010
Filing Date: 2013-02-26
Classification: B05B

Abstract:
1. Dosing device with a manually actuatable pumping arrangement comprising a pumping chamber and an inlet valve constructed as a slide valve, the slide valve having a cylindrical dosing channel comprised of upper and lower parts that are coaxially aligned with a pumping axis, a wall surface of the lower part having circumferentially spaced flow profilings and a piston having a sealing lip configured to slide lengthwise of the dosing channel along the pumping axis while sequentially slidingly engaging a wall surface of the upper part and the wall surface of the lower part of the dosing channel, the dosing channel on an inlet side opening into an inlet area of the lower part remote from the upper part, the inlet area having the flow profilings configured to cause opening of the slide valve upon movement of the sealing lip to the inlet area, the sealing lip being in a closed position of the slide valve while sealingly slidingly engaging the wall surface of the upper part and becoming opened in response to the sealing lip engaging the inlet area of the lower part caused by the flow profilings allowing medium to flow past the sealing lip from a medium reservoir through the flow profilings into the dosing channel and to the pumping chamber, the sealing lip being sealingly movable along the pumping axis over a dosing stroke in the dosing channel so that the slide valve defines a dosing volume for the pumping chamber.