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:
Sep. 08, 2015
Filed:
Sep. 01, 2011
Applicants:
Ronald A. Hagen, Stillwater, MN (US);
Keith K. Mclaughlin, Eagan, MN (US);
Inventors:
Ronald A. Hagen, Stillwater, MN (US);
Keith K. McLaughlin, Eagan, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 29/42 (2006.01); A62B 7/10 (2006.01); F04D 25/06 (2006.01); F04D 17/16 (2006.01);
U.S. Cl.
CPC ...
F04D 29/4226 (2013.01); A62B 7/10 (2013.01); F04D 25/068 (2013.01); F04D 17/16 (2013.01);
Abstract
A radial fan assembly for use in a powered air purifying respirator includes at least an impeller, a printed circuit board and a scroll casing. The scroll casing has a first and a second scroll casing element. The second scroll casing element includes at least a portion of the printed circuit board. When the radial fan assembly is used in a powered air purifying respirators, the respirator may also include components such as a filter assembly.