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. 08, 2013
Filed:
Jul. 08, 2010
Mark T. Wieczorek, Cookeville, TN (US);
Arnaud Leven, Ergué-Gabéric, FR;
Jean-luc Guichaoua, Combrit, FR;
Jean-yves Picard, Quimper, FR;
Gerard Malgorn, Quimper, FR;
Terry W Shults, Cookeville, TN (US);
Barry M. Verdegan, Stoughton, WI (US);
Mark T. Wieczorek, Cookeville, TN (US);
Arnaud LeVen, Ergué-Gabéric, FR;
Jean-Luc Guichaoua, Combrit, FR;
Jean-Yves Picard, Quimper, FR;
Gerard Malgorn, Quimper, FR;
Terry W Shults, Cookeville, TN (US);
Barry M. Verdegan, Stoughton, WI (US);
Cummins Filtration IP, Inc., Minneapolis, MN (US);
Abstract
A dual stage filter includes an outer filter with a first media and an inner filter with a second media. A barrier is between the first media and the second media. The barrier directs fluid flow between the first and second media. The barrier creates a flow path between the first and second media, such that a working fluid, which is desired to pass through the first and second media, is directed by the barrier and flows through the second media, and such that another fluid, which is not desired to pass through the second media, is directed by the barrier and separates from the working fluid. Using the barrier, the dual stage filter can employ either or both upward flow and downward flow to achieve efficient fluid separation, for example fuel water separation in an engine fuel filter.