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Class Information
Number: 55/490
Name: Gas separation > With means securing or retaining separating media
Description: Apparatus comprising (1) a media placed in a flow line by being previously distorted out of its normal or natural shape or size and retained within the flow line by its contact with the wall thereof and its tendency to regain its normal shape or (2) means distinct from the media itself to maintain or contain said media in a stable or sustained altitude either in or out of a flow line as by binding, framing, stitching, to support the media against gravity as to maintain it as a cohesive entity by means not including bonding of the media upon itself.

Sub-classes under this class:

Class Number Class Name Patents
55/512 Discrete fibrous or particulate solids 99
55/491 Fastening means pierces or penetrates media 101
55/494 Grid or tray type for bottom support only 52
55/493 Hinged or pivoted retainer or clamp on backing frame or in flow line 329
55/492 Internal frame or support means 193
55/495 Unit or cohesive sheet-like media in flow line or frame 314
55/490.1 With heating or cooling means 30

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8673041 Filter holding frame with adjustable clamping mechanism and slot for pre-filter Mar. 18, 2014
8668756 Panel filter with reduced restriction Mar. 11, 2014
8663370 Breather for crankcase ventilation system Mar. 4, 2014
8657900 Filter device and main filter element for a filter device Feb. 25, 2014
8647405 Filter housing for accommodating a plurality of filter sizes Feb. 11, 2014
8641901 Filter structure Feb. 4, 2014
8603229 Multi-element structured arrays (MESA's) for cost effective and high efficiency treatment of fluids Dec. 10, 2013
8591736 Water filter unit Nov. 26, 2013
8568504 Moisture reducing apparatus Oct. 29, 2013
8523972 Atmospheric air filtration unit, air pre-filtration unit, and associated air filtration system for removeable attachment thereof Sep. 3, 2013
8414838 Honeycomb filter and exhaust gas purifying apparatus Apr. 9, 2013
8398852 Drainless reverse osmosis water purification system Mar. 19, 2013
8382874 Air filter having dimensional extending tabs Feb. 26, 2013
8337582 Adapter for a compressed air filter and use of the same Dec. 25, 2012
8328894 Dust prevention and removal device Dec. 11, 2012
8323387 Air filtering assembly Dec. 4, 2012
8317889 Installation structure for dustproof net Nov. 27, 2012
8303678 Intake air filter system Nov. 6, 2012
8273144 Air treatment device and housing for an air treatment device Sep. 25, 2012
8252079 Particle separating device for an aerosol stream Aug. 28, 2012
8252083 Filter-holding object Aug. 28, 2012
8226827 Filtration assemblies and methods of installing filtration units in filtration assemblies Jul. 24, 2012
8206478 Portable and modular separator/collector device Jun. 26, 2012
8202422 Fluid system Jun. 19, 2012
8167334 Gas generator for an airbag module May. 1, 2012
8152876 Filter element having V-seal Apr. 10, 2012
8147576 Filter element having serrated seal Apr. 3, 2012
8142536 Filter unit Mar. 27, 2012
8142533 Filter element and filter system Mar. 27, 2012
8137426 Filter mounts for a portable fan and methods for mounting a filter to a portable fan Mar. 20, 2012
8105409 Filter retention system Jan. 31, 2012
8105485 Filtering system, in particular for filtering liquids in internal combustion engines Jan. 31, 2012
8080079 Air filter housing with guides for air filter units Dec. 20, 2011
8070848 Air filter mounting system and method for fabricating the same Dec. 6, 2011
8061530 Filtration sealing system Nov. 22, 2011
8062403 Filter elements for circulating air systems Nov. 22, 2011
8057565 Air conditioning apparatus Nov. 15, 2011
8052770 Filter retainer for turbine engine Nov. 8, 2011
8048299 Crossflow pressure liquid filtration with ultrasonic enhancement Nov. 1, 2011
8048186 Filter retention systems and devices Nov. 1, 2011
8006848 Filter and manufacturing method therefor Aug. 30, 2011
8007574 Air conditioner Aug. 30, 2011
8002868 Dehumidifier Aug. 23, 2011
8002981 Fuel filter assembly with flow restriction sleeve Aug. 23, 2011
7976705 Filtration assemblies and methods of installing filtration units in filtration assemblies Jul. 12, 2011
7972401 Air intake filter assembly Jul. 5, 2011
7967882 Low-profile surface mount filter Jun. 28, 2011
7946430 Filter with protruding member for engaging valve in head May. 24, 2011
7935161 Filter cartridge with mounting apparatus and method of filter replacement for a cyclonic separation system May. 3, 2011
7909901 Liquid cartridge Mar. 22, 2011

1 2 3 4 5

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