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:
Oct. 05, 2004
Filed:
Aug. 20, 2002
Otmar Schön, Bexbach-Höchen, DE;
Hydac Filtertechnik GmbH, Sulzbach/Saar, DE;
Abstract
A backflush filter device for filter elements ( ) is incorporated in a filter housing ( )having a filter inlet ( ) and an outlet ( ) for the liquid to be filtered. The filter elements ( ) permit flow in both directions for a filtration, or backflush. One filter element ( ) may be performing a filtration and, simultaneously, at least one other filter element ( ) may be backflushed to clean its effective filtration surface. To assist the backflushing, a vacuum device ( ) is provided. The vacuum device generates a vacuum at the filter element ( ) to be backflushed. The efficacy of the ongoing backflush is increased to be able to remove even the toughest contaminants. The cleaning process uses little energy and occurs in a defined manner, such that the backflush volumes may be both specified and minimized.