AIR FILTERING DEVICE

• US 20150246309A1
• Filed: 04/29/2015
• Published: 09/03/2015
• Est. Priority Date: 05/09/2013
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: GRUENBACHER, Dana Paul, SCHROECK, Steven James, LEON, Jessica Elizabeth, DAL BO, Paolo, SCHOBER, Uwe
• Granted Patent: US 10,232,297 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B01D 2273/30 Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan
• CPC Class Codes: B01D 46/0086 Filter condition indicators
• CPC Class Codes: B01D 46/02 Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
• CPC Class Codes: B01D 46/42 Auxiliary equipment or operation thereof

Abstract

A device for filtering air comprising a base, a fan functionally attached to the base, an air filter releasably attached to the base, and a substantially air impermeable outer sleeve is provided.

Claims

6-1. The device of claim 1, wherein said air filter bag does not contact said outer-sleeve while said device is activated.

20. An air filtering device comprising:

a base having an air inlet and an air outlet;

a fan functionally attached to said base, wherein said fan moves air through said air outlet when said fan is activated;

an air filter in air flow communication with said air outlet, wherein said air filter comprises a non-woven having a thickness between about 1 and about 3 mm, a density from about 20 kg/m³ to about 60 kg/m³, and a pore volume distribution of at least about 15% of the total volume is in pores of radii from about 10 μ

m to about 50 μ

m, at least 40% of the total volume is in pores of radii from about 50 μ

m and about 100 μ

m, and at least 10% of the total volume is in pores of radii from about 200 μ

m to about 800 μ

m;

a substantially air impermeable outer sleeve comprising a first open end, a second open end, and an air flow path therebetween, wherein said outer sleeve is in air flow communication with said air outlet and wherein said outer sleeve is releasably attached to said base at said first open end, and wherein said outer sleeve envelops said air filter around its longitudinal axis.