Title:
AIR FILTRATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/126887
Kind Code:
A3
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.
Inventors:
AUSEN DAVID L (US)
Application Number:
PCT/US2011/030526
Publication Date:
February 23, 2012
Filing Date:
March 30, 2011
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES CO (US)
AUSEN DAVID L (US)
AUSEN DAVID L (US)
International Classes:
B01D46/00; A62B7/10; B01D53/00
Foreign References:
| US20070044800A1 | 2007-03-01 | |||
| US5283914A | 1994-02-08 | |||
| US20040255364A1 | 2004-12-23 | |||
| US7454800B2 | 2008-11-25 |
Other References:
See also references of EP 2555849A4
Attorney, Agent or Firm:
OLOFSON, Jeffrey, M. et al. (Office of Intellectual Property Counsel3M Cente, Saint Paul Minnesota, US)
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