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:
Apr. 20, 2021
Filed:
Feb. 27, 2018
Hydac Process Technology Gmbh, Neunkirchen, DE;
Hans-Juergen Lingen, Moenchengladbach, DE;
Stefan Klein, Bad Muenstereifel, DE;
Raphael Klein, Frechen, DE;
Sebastian Hrin, Elsdorf, DE;
HYDAC PROCESS TECHNOLOGY GMBH, Neunkirchen, DE;
Abstract
The invention relates to a filter device, in particular for filtering lubrication, consisting of at least one filter insert (), in which a respective filter material () is received and which is provided with fluid passage points () that are delimited by wall parts () of the filter insert () and with a backflush device () that has at least one flush nozzle (), said flush nozzle being movable along the interior of the respective pairable filter insert () by means of a hollow drive shaft (). The invention is characterized in that at least one pair of flush nozzles () is provided for each filter insert (), said flush nozzles having longitudinal slots () which are arranged one over the other in the axial direction of the drive shaft (), wherein the longitudinal slots have an offset relative to one another which runs transversely to the axial direction such that for adjacent flush nozzles (), at least one part of the longitudinal slot () of one flush nozzle () overlaps with at least one of the fluid passage points () of the pairable filter insert () and at least one part of the longitudinal slot () of the other flush nozzle () at least partly overlaps with the wall parts () which delimit the aforementioned fluid passage point of the filter insert ().