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. 02, 2014
Filed:
Dec. 15, 2011
Britton G. Billingsley, St. Paul, MN (US);
David M. Blomberg, Lino Lakes, MN (US);
Joy L. Manske, Menomonie, WI (US);
Britton G. Billingsley, St. Paul, MN (US);
David M. Blomberg, Lino Lakes, MN (US);
Joy L. Manske, Menomonie, WI (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A filtering devicethat includes a housinghaving a plurality of subsections, andwhere each subsection contains a filter element, and. An inletis disposed at a first location on the housing, and an upstream air distribution system is placed in fluid communication with the inletand with each of the subsections, and. A downstream air distribution system is located in fluid communication with each subsection, and, and an outletis in fluid communication with the downstream air distribution system. The subsections are fashioned such that each subsection, andis not in fluid communication with each other. Using a filtering device so constructed, airflow through the device may be better managed to enable overall product service life to be increased while minimizing pressure resistance of the total filter.