The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 1998
Filed:
Feb. 09, 1996
Rudiger Emmerich, Grevenbroich, DE;
Jorg Berger, Aachen, DE;
PKL Verpackungssysteme GmbH, , DE;
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.