IDiyas

For the Inventor, By the Inventor

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.:

US 9358409 B1

PDFFull Text
Date of Patent:
Jun. 07, 2016

Filed:

Mar. 30, 2011

Air filtration device

Applicant:

David L. Ausen, Eagan, MN (US);

Inventor:

David L. Ausen, Eagan, MN (US);

Assignee:

3M Innovative Properties Company, St. Paul, MN (US);

Attorney:

Jeffrey M. Olofson

Primary Examiner:

Steven Douglas

Assistant Examiner:

Colin W Stuart

Int. Cl.
CPC ...
A62B 18/04 (2006.01); A61M 16/06 (2006.01); A62B 18/00 (2006.01); A62B 7/10 (2006.01); B01D 46/10 (2006.01); B01D 46/24 (2006.01); B01D 46/42 (2006.01); A62B 23/02 (2006.01); A62B 19/00 (2006.01); B01D 53/04 (2006.01);
U.S. Cl.
CPC ...
A62B 18/045 (2013.01); A61M 16/0627 (2014.02); A62B 7/10 (2013.01); A62B 18/006 (2013.01); A62B 18/04 (2013.01); B01D 46/10 (2013.01); B01D 46/2411 (2013.01); B01D 46/4236 (2013.01); A62B 18/003 (2013.01); A62B 19/00 (2013.01); A62B 23/02 (2013.01); B01D 53/0415 (2013.01); B01D 2258/06 (2013.01); B01D 2259/4533 (2013.01); B01D 2259/4541 (2013.01); B01D 2273/30 (2013.01); Y10T 29/49002 (2015.01);
Abstract

Air filtering devices may be helmet-mounted or belt-mounted. The air filtering devices include a filtering device shell and a filtering unit. The filtering unit includes a contaminated-air inlet, a filter assembly in fluid communication with the contaminated-air inlet, a blower assembly in fluid communication with the filter assembly via a duct, and containing a filtered-air outlet, and a filtered-air passageway in fluid communication with the blower assembly outlet and leading to breathing headgear. The blower assembly is vibrationally isolated from the filtering device shell by being only attached to the filtering device shell by the duct. The duct includes an elastomeric material.

Find Patent Forward Citations

Loading…