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:
Jan. 27, 2009
Filed:
Jan. 05, 2005
Kirk J. Ciak, Troy, MI (US);
Wilhelmus Petrus Maria Schaerlaeckens, Bavel, NL;
Kirk J. Ciak, Troy, MI (US);
Wilhelmus Petrus Maria Schaerlaeckens, Bavel, NL;
NTZ Nederland BV, Rotterdam, NL;
Abstract
One advantageous embodiment of the invention is a filter device () for filtering a fluid and providing three or more substantially continuous directions of flow therethrough. The filter device () includes a housing () having an entry port () and an exit port (). The housing () has a filter medium () disposed therein for filtering the fluid that flows along a filtration-flow direction () from the entry port () to the exit port (). The filter medium () has a bi-directional valve () coupled thereto for selectively directing the fluid along a bypass-flow direction () and a reverse-flow direction () that is generally opposite to said bypass-flow direction (). The bypass-flow direction () extends from the entry port () to the exit port () in bypass of the filter medium (). Also, the reverse-flow direction () extends from the exit port () to the entry port ().