Dispensing – Processes of dispensing
Patent
1996-02-09
1998-11-03
Huson, Gregory L.
Dispensing
Processes of dispensing
222249, B67B 700
Patent
active
058296336
ABSTRACT:
The invention relates to an apparatus and a method for the metering of a predeterminable quantity of a liquid, more particularly H.sub.2 O.sub.2, having a liquid inlet (10E), at least one metering chamber (6) and a liquid outlet (10A), in that the quantity of the liquid delivered by the apparatus always has not only an identical volume, but also identical properties. Thus more particularly in the case of gassing-out liquids, such as H.sub.2 O.sub.2, for example, it is possible to reliably ensure that a continues metering of a bubble-free liquid is rendered possible, so as not to change the concentration. This problem is solved in the apparatus according to the invention by the features that in addition to the liquid line (10) between the liquid inlet (10E) and the liquid outlet (10A), a compressed air line (11) is provided between a compressed air inlet (11E) and a compressed air outlet (11A), and at least one metering chamber can be alternately connected to the liquid line (10) and the compressed air line (11). As regard the method, the problem is solved by the following steps:
The filling of at least one metering chamber (6) with a liquid, the closure of the filled metering chamber(s) (6, 6') by changing the position of the movable element (1), and the discharge of the metered quantity of liquid.
REFERENCES:
patent: 3737073 (1973-06-01), Lupert
patent: 4162750 (1979-07-01), Demers et al.
patent: 4705034 (1987-11-01), Perkins
patent: 4736873 (1988-04-01), Patriquin
patent: 5092494 (1992-03-01), Proglyada
Berger Jorg
Emmerich Rudiger
Huson Gregory L.
PKL Verpackungssysteme GmbH
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