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:
Jul. 13, 2021
Filed:
Apr. 26, 2012
Ralf Wnuk, Bexbach/Kleinottweiler, DE;
Jörg Hermann Gerstner, Püttlingen, DE;
Thomas Böttcher, Illingen-Hüttigweiler, DE;
Thomas Morawietz, Homburg-Erbach, DE;
Ralf Wnuk, Bexbach/Kleinottweiler, DE;
Jörg Hermann Gerstner, Püttlingen, DE;
Thomas Böttcher, Illingen-Hüttigweiler, DE;
Thomas Morawietz, Homburg-Erbach, DE;
HYDAC PROCESS TECHNOLOGY GMBH, Neunkirchen, DE;
Abstract
A filtering apparatus has filtering elements () in a filter housing (), a filter inlet () and a filter outlet (). During filtration, one of the filter elements () can be back-flushed by a back-flushing device (), having a pressure control device (). The pressure control device has a hydraulic accumulator (), with a fluid chamber () fillable during filtration with clean fluid and connectable for back-flushing via a back-flushing guide () to the clean side () of the filtering element () to be cleaned. For back-flushing, a further fluid chamber () of the hydraulic accumulator () is subjected to gas pressure. By resultant movement of a separator () of the hydraulic accumulator (), the filling amount of the clean fluid is dispensed for the back-flushing.