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. 09, 2013
Filed:
Nov. 04, 2008
Applicants:
Werner Wilkendorf, Ottweller, DE;
Stefan Marschall, Schiffweiler, DE;
Inventors:
Werner Wilkendorf, Ottweller, DE;
Stefan Marschall, Schiffweiler, DE;
Assignee:
Hydac Filtertechnik GmbH, Sulzbach/Saar, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 46/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A filter device, in particular a reflux vacuum filter, has at least one filter housing () in which at least one filter element () can be accommodated. The filter element defines a longitudinal axis (), and has at least two valve units in the form of a bypass valve (V) and of a pre-pressurizing valve (V). The valve units are arranged concentric to and along the longitudinal axis () of each filter element ().