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公开(公告)号:USD746969S1
公开(公告)日:2016-01-05
申请号:US29532877
申请日:2015-07-10
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公开(公告)号:USD744626S1
公开(公告)日:2015-12-01
申请号:US29532875
申请日:2015-07-10
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公开(公告)号:US20170304757A1
公开(公告)日:2017-10-26
申请号:US15643562
申请日:2017-07-07
发明人: Keith A. Grider , Derek J. Leatzow , Stephen J. McPhilliamy , Antonio J. Belton , John S. White, JR. , Daniel J. Greene
CPC分类号: B01D46/0004 , B01D46/0024 , B01D46/0041 , B01D46/0086 , B01D46/30 , B01D46/44 , B01D46/444 , B01D46/446 , B01D46/46 , B01D2273/30
摘要: Various embodiments of the present disclosure provide a portable industrial air filtration device employing an annular dual filter assembly to capture and remove impurities from the air surrounding the air filtration device, enabling the air filtration device to quickly and efficiently improve the quality and safety of the air. The air filtration device includes a two-piece housing including a lower housing component and a locking cover removably attachable to the lower housing component. The dual filter assembly is mounted within the housing between the locking cover and the lower housing component, and includes a removable self-supporting outer pre-filter surrounding a separately removable inner HEPA filter. The pre-filter initially filters the surrounding air by capturing relatively large or coarse impurities, and the HEPA filter further filters the air pulled through the pre-filter by capturing relatively small or fine impurities.
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公开(公告)号:USD744625S1
公开(公告)日:2015-12-01
申请号:US29532873
申请日:2015-07-10
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公开(公告)号:USD737946S1
公开(公告)日:2015-09-01
申请号:US29449728
申请日:2013-03-15
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公开(公告)号:USD737945S1
公开(公告)日:2015-09-01
申请号:US29449564
申请日:2013-03-15
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公开(公告)号:US09776117B2
公开(公告)日:2017-10-03
申请号:US14200879
申请日:2014-03-07
发明人: Keith A. Grider , Derek J. Leatzow , Stephen J. McPhilliamy , Antonio J. Belton , John S. White, Jr. , Daniel J. Greene , Ryan L. Francis , Sean J. Corrigan , Charles Steven Pint , Frank E. Garrett, Jr.
CPC分类号: B01D46/0004 , B01D46/0024 , B01D46/0041 , B01D46/0086 , B01D46/30 , B01D46/44 , B01D46/444 , B01D46/446 , B01D46/46 , B01D2273/30
摘要: Various embodiments of the present disclosure provide a portable industrial air filtration device employing an annular dual filter assembly to capture and remove impurities from the air surrounding the air filtration device, enabling the air filtration device to quickly and efficiently improve the quality and safety of the air. The air filtration device includes a two-piece housing including a lower housing component and a locking cover removably attachable to the lower housing component. The dual filter assembly is mounted within the housing between the locking cover and the lower housing component, and includes a removable self-supporting outer pre-filter surrounding a separately removable inner HEPA filter. The pre-filter initially filters the surrounding air by capturing relatively large or coarse impurities, and the HEPA filter further filters the air pulled through the pre-filter by capturing relatively small or fine impurities.
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公开(公告)号:USD797273S1
公开(公告)日:2017-09-12
申请号:US29533119
申请日:2015-07-14
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公开(公告)号:USD744624S1
公开(公告)日:2015-12-01
申请号:US29521932
申请日:2015-03-26
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公开(公告)号:US09700821B2
公开(公告)日:2017-07-11
申请号:US14199242
申请日:2014-03-06
发明人: Keith A. Grider , Derek J. Leatzow , Stephen J. McPhilliamy , Antonio J. Belton , John S. White, Jr. , Daniel J. Greene
CPC分类号: B01D46/0004 , B01D46/0024 , B01D46/0041 , B01D46/0086 , B01D46/30 , B01D46/44 , B01D46/444 , B01D46/446 , B01D46/46 , B01D2273/30
摘要: Various embodiments of the present disclosure provide a portable industrial air filtration device employing an annular dual filter assembly to capture and remove impurities from the air surrounding the air filtration device, enabling the air filtration device to quickly and efficiently improve the quality and safety of the air. The air filtration device includes a two-piece housing including a lower housing component and a locking cover removably attachable to the lower housing component. The dual filter assembly is mounted within the housing between the locking cover and the lower housing component, and includes a removable self-supporting outer pre-filter surrounding a separately removable inner HEPA filter. The pre-filter initially filters the surrounding air by capturing relatively large or coarse impurities, and the HEPA filter further filters the air pulled through the pre-filter by capturing relatively small or fine impurities.
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