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:
May. 12, 2020
Filed:
Jan. 22, 2019
Basf SE, Ludwigshafen, DE;
Wolf-Dieter Wichmann, Neetzow, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The invention relates to a metering pump having a hydraulic drive () for supplying a hydraulic fluid under pressure. The metering pump furthermore comprises a housing () and an oscillating piston (), which is accommodated in the housing () in such a way that at least a first and a second hydraulic chamber (--) and a first (-) and a second delivery chamber (-) are formed, wherein the oscillating piston () has at least a first driving surface (-) in the first hydraulic chamber (-) and at least a second driving surface (-) in the second hydraulic chamber (-), and the hydraulic chambers (--) communicate with the hydraulic drive, thus enabling the oscillating piston () to be moved backward and forward between a first and a second position by the hydraulic fluid, wherein, during the movement from the first to the second position, the volume of the first delivery chamber (-) is enlarged and the volume of the second delivery chamber (-) is reduced and, during the movement from the second to the first position, the volume of the second delivery chamber (-) is enlarged and the volume of the first delivery chamber (-) is reduced. The invention furthermore relates to a metering system for mixing two fluids and a metering system for metering at least one fluid.