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| Number | Title | Issue Date |
| 7282086 | Fluid filter cleaning apparatus A filter cleaning apparatus for cleaning a filter using cleaning fluid comprises a housing, a filter holder for holding the filter, wherein the filter holder is mountable in the housing, a rotating means for rotating the filter holder, wherein the filter holder hold... | 10/16/2007 |
| 7247237 | Fluid cleaning filter and filter device A fluid cleaning filter of the present invention consists of a composite matrix composed of a pleated substrate 2 configured into a pleated shape and an active carbon-containing layer 3, wherein the pleated substrate 2 is made of polyurethane fo... | 07/24/2007 |
| 7101420 | Self cleaning air filtration machine and a method for using the same Self cleaning air filtration machine and a method for using same comprising; a filter with a motor driven belt or disk or counter rotating disks that are perforated, a spray bar, a recirculation pump and supply line, a wet tank, a ultrasonic transducer, ultraviolet ... | 09/05/2006 |
| 7033556 | Method and apparatus for cake-forming granular-bed filtration There is provided a granular-bed filter for cleaning a gas containing fine particulate matter (“dust”). A multiplicity of vertically disposed filter trays are assembled to form a “panel.” In each filter tray, an inclined porous plate supports a bed of granul... | 04/25/2006 |
| 6913637 | Air purifier An air purifier includes a main body defining an air passage therein to allow sucked air to pass therethrough prior to being discharged, and a first filter installed in the main body to be switched between a closed state and an open state. The first filter removes c... | 07/05/2005 |
| 6051053 | Trapping device and method of operation therefor A trapping device that performs a regeneration operation efficiently so as to raise the overall operational reliability by improving the service life as well as to lower the capital and operation cost of the processing system. The trapping device includes... | 04/18/2000 |
| 5935300 | Separation Apparatus A separation process comprises passing a gas or vapor stream contaminated with an undesired substance or contaminant downwardly through a plurality of spiral separating media such that the direction of movement of the gas or vapor stream is transversely t... | 08/10/1999 |
| 5904751 | Separation apparatus A separation process comprises passing a gas or vapor stream contaminated with an undesired substance or contaminant downwardly through a bed of curled separating media. The undesired substance or contaminant is allowed to separate from the gas or vapor a... | 05/18/1999 |
| 4548623 | Perforated trough conditioning device An apparatus for conditioning a fluid stream or a flow of granular solids at high volume and low velocity comprising a substantially closed cylindrical body having its side walls defined by a permeable helical trough joined to a vertically inclined baffle... | 10/22/1985 |
| 4344779 | Air pollution control system The disclosure is of gas-cleaning apparatus comprising a chamber having a downwardly vertical gas and fluid flow path, with the gas and fluid moving at high velocity. One or more layers of solids is disposed across the path of gas and fluid flow, and thes... | 08/17/1982 |
| 4303420 | Air treatment apparatus An air treatment apparatus for removing particulate matter and contaminants from a flow stream of air includes an air inlet chamber coupled to an air inlet duct and two spaced-apart air flow chambers communicating with the air inlet chamber at a first end... | 12/01/1981 |
| 4294596 | Air-filter apparatus in combination with a turbine engine An air-filter apparatus for use with gas-turbine and like engines, wherein the filter is formed as a continuous moving blanket-like belt. There is also provided a continuous cleaning system which includes rotating brushes engaging the filter blanket to lo... | 10/13/1981 |
| 4130404 | Method and device for cleaning fluid filters A method and device for cleaning fluid filters of the kind comprising a filter member, which is rotatable to be cleaned by means of centrifugal action, includes a device to reverse the direction of the fluid flow through the filter member during rotation ... | 12/19/1978 |
| 4103676 | Grease extraction cartridge for kitchen exhaust ventilator A grease extraction cartridge for a kitchen exhaust ventilator is removably disposed along a flow path through the ventilator for normally forming a fire wall, while being readily removable from the ventilator to permit access to the interior of the venti... | 08/01/1978 |
| 4066425 | Ventilating apparatus including exhaust filter exchanger An exhaust hood with filter apparatus and having at least a fume collection chamber, an exhaust chamber and an interior wall therebetween having an opening therein through which the collected fumes may pass to exhaust. An exhaust filter exchanger is mount... | 01/03/1978 |
