Abstract: A dispenser for dispensing controlled quantities of liquid from a bottle includes a piston, which is movable in a cylinder and serves to suck and discharge an adjustable quantity of liquid. The cylinder is secured to a valve block, which contains a suction valve and a discharge valve. A cylindrical sleeve surrounds the cylinder and defines an annular clearance therewith. To change the length of the stroke of the piston and the quantity of liquid which is to be sucked and discharged depends on the stroke length, an adjustable stop and a fixed stop, which is engageable with the adjustable stop and are accommodated in the clearance.
February 22, 1983
Date of Patent:
July 2, 1985
Adolf M. Hirschmann, Klaus Kaser, Hans Rieker, Hans-Peter Busch, Willi Rathke, Heinz P. Maul