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Class Information
Number: 55/361
Name: Gas separation > Flexible or collapsible bag type
Description: Apparatus having a separating member comprised of nonrigid cohesive material of essentially globular, tubular, or cylindrical container configuration which encloses a space and has at least one opening for passing gas into or out of said member, said member comprised in part or entirely of gas permeable filter material.










Sub-classes under this class:

Class Number Class Name Patents
55/365 Bag carried strain relief means between bag supports 7
55/369 Closure means other than coupler to flow line for filter or cover bag 44
55/373 Housing closure secures bag 64
55/364 Impervious bag with pervious portion 19
55/380 Nested bags or folded wall with spaced or unsecured faces 67
55/381 Seaming, reinforcing or bag structure 147
55/368 Spaced interior inflow path or with means modifying gas flow in bag 38
55/363 Toroidal or annular bag 12
55/367 Valved, self-closing, or apparatus contained bag closing means 64
55/372 With additional nonbag type filter 42
55/362 With bag ejecting means 5
55/374 With flow line coupling means 99
55/378 With securing or supporting means 294
55/366 With separable nonfiltering residue container 34


Patents under this class:
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Patent Number Title Of Patent Date Issued
8702849 Dust screen and method for dry bulk storage units Apr. 22, 2014
8657929 Method for treating exhaust gas Feb. 25, 2014
8652230 Media for hot gas filtration Feb. 18, 2014
8529655 Dust collector structure Sep. 10, 2013
8484798 System comprising a vacuum cleaner and a dust bag Jul. 16, 2013
8479356 Vacuum cleaner filter bag comprising a sealing device Jul. 9, 2013
8449639 Vacuum cleaner filter bag May. 28, 2013
8424154 Vacuum cleaner with filter cleaning means Apr. 23, 2013
8409311 Filtering device Apr. 2, 2013
8377175 Apparatus and method for treating exhaust gas Feb. 19, 2013
8246844 Method for folding a filter bag and a folded filter bag arrangement Aug. 21, 2012
8211195 Hot gas filtration fabrics with silica and flame resistant fibers Jul. 3, 2012
8157879 Vacuum cleaner filter bag with deflection device Apr. 17, 2012
8110025 Dust collector chip separation baffle Feb. 7, 2012
8043383 Reducing formaldehyde emissions Oct. 25, 2011
8038776 Apparatus for filtering gas turbine inlet air Oct. 18, 2011
8007573 Filter and associated method Aug. 30, 2011
7955404 Dust collector Jun. 7, 2011
7799107 Self-sealing bag arrangement for a floor cleaning device Sep. 21, 2010
7744683 Transparent filterable dust bag with support container for vacuum cleaner Jun. 29, 2010
7717973 Cyclone dust-separating apparatus of vacuum cleaner May. 18, 2010
7695537 Dust collector with a function of secondary collection Apr. 13, 2010
7695538 Negative pressure dust collector with a dust receiving bag smoothly inflatable Apr. 13, 2010
7695551 Apparatus for filtering gas turbine inlet air Apr. 13, 2010
7641708 Air filter assembly having non-cylindrical filter elements, for filtering air with particulate matter Jan. 5, 2010
7611559 Filter element Nov. 3, 2009
7611554 Collector bag for vacuumed soil and lawn debris Nov. 3, 2009
7611555 Vacuum cleaner bag Nov. 3, 2009
7566354 Bag in, bag out filter assembly Jul. 28, 2009
7527674 Apparatus for filtering gas turbine inlet air May. 5, 2009
7485592 Bag filter comprising polyphenylene sulfide and acrylic fiber Feb. 3, 2009
7468083 Vacuum cleaner equipped with bag mount and separate bag caddy Dec. 23, 2008
7309369 Filter module Dec. 18, 2007
7291194 Intermittent mixer with low pressure drop Nov. 6, 2007
7288128 Intermittent mixer with low pressure drop Oct. 30, 2007
7260868 Simple dust collector Aug. 28, 2007
7238223 Acoustical stimulation of vapor diffusion system and method Jul. 3, 2007
7208025 Method and apparatus for filtering air passages in an alternator Apr. 24, 2007
6946011 Intermittent mixer with low pressure drop Sep. 20, 2005
6932857 Multi-stage collector and method of operation Aug. 23, 2005
6716262 Mounting collar for a filter bag Apr. 6, 2004
6583072 Fabric from impregnated polyphenylene sulfide fibers Jun. 24, 2003
6537337 Air filter for extraction apparatus Mar. 25, 2003
6379408 Mounting and closure structure for a bag, such as a vacuum cleaner bag Apr. 30, 2002
6348078 Vacuum cleaner output duct extension Feb. 19, 2002
6342084 Vacuum cleaner Jan. 29, 2002
6277165 Vacuum cleaner bag Aug. 21, 2001
6224645 Dust separator May. 1, 2001
6199602 Large drums for high-dispersion, high air content solids, and a method for filling them Mar. 13, 2001
6156086 Dual media vacuum filter bag Dec. 5, 2000

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