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:
Dec. 30, 1997
Filed:
Mar. 22, 1996
Applicant:
Inventors:
Todd W Johnson, St. Paul, MN (US);
David G Fabio, St. Paul, MN (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
2104931 ; 2104935 ; 21049701 ; 156218 ; 55497 ; 55521 ;
Abstract
There is provided a liquid filter formed of a pleated filter material or laminate where the pleat folds are closely adjacent such that they are separated by less than 6 mm. The downstream pleat tips are supported by a rigid support structure of an open porous lattic or the like. Between the downstream pleat tips and the rigid support structure is a self-sealing fibrous cover layer having an effective mean flow pore size (MFPS) greater than the effective MFPS of the pleated filter material.