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| Number | Title | Issue Date |
| 7951214 | Filter cleaning system for a vacuum cleaner This invention relates to a vacuum cleaner comprising a body with a vacuum source. The vacuum cleaner is provided with at least two filter chambers, a first filter chamber for a first filter means in a surface cleaning mode and a second chamber for the same or a sec... | 05/31/2011 |
| 7780752 | Cyclone dust-separating apparatus of vacuum cleaner A cyclone dust-separating apparatus of a vacuum cleaner is disclosed. The cyclone dust-separating apparatus includes a cyclone unit having a cyclone chamber to whirl first air drawn in from the outside thus to separate dust or dirt therefrom, a filter unit disposed ... | 08/24/2010 |
| 7410521 | Filter service system and method A system for removing matter from a filtering device includes a flow receiving device having a plurality of blocking portions. Each of the plurality of blocking portions is configured to substantially block a flow directed by a corresponding at least one of a plural... | 08/12/2008 |
| 7357823 | Disposable filter within a removable chamber A vacuum cleaner includes a housing, a nozzle inlet, a suction generator and a dirt cup. The dirt cup includes a dirt collection chamber, an inlet and an open end. Additionally, the vacuum cleaner includes a filter assembly. The filter assembly includes a filter hou... | 04/15/2008 |
| 7208024 | Floor care appliance with filter cleaning system The present invention is a floor care appliance having a filter member that has one portion being cleaned at all times. The filter is utilized for separating fine particles from a dirt laden airstream that has been previously cleaned of larger particles. The hollow ... | 04/24/2007 |
| 7152276 | Filter assembly for a cyclone-type dust collecting apparatus of vacuum cleaner A filter assembly for a cyclone-type dust collecting apparatus of a vacuum cleaner which filters dust included in the air current discharged from the outlet port of the cyclone-type dust collecting apparatus. The present filter assembly comprises a rotating filter r... | 12/26/2006 |
| 7152277 | Filter assembly for cyclone type dust collecting apparatus of a vacuum cleaner A vacuum cleaner, centrifugally separates contaminates from air and collects them in a filter assembly that includes a rotary filter connected to an exhaust port. The filter is provided with a suction grill portion at the outer circumference and a discharge port tha... | 12/26/2006 |
| 7147683 | Back-flow valve and trigger for a cleaning machine A valve and trigger cyclically connect a vacuum and a blower to a filter. The valve box has three openings, the first connectable to the vacuum, the second connectable to the blower and the third connectable to the filter. A gate inside the box, biased by the blower... | 12/12/2006 |
| 7135051 | Dirt cup filter with pre-filtration cap A dual-stage vacuum cleaner filter with a pre-filtration cap having pre-filtering screens. A base with an aperture and a filter media strip pleated in the shape of a frustocone can be mounted within the dirt cup of a handheld vacuum. A circular, planar gas impermeab... | 11/14/2006 |
| 7124463 | Conveyor lip for motorized street sweeper A street sweeper system is used typically in a motorized vehicle. The sweeper utilizes a cylindrical brush rotating about an axis that is typically perpendicular to the vehicle's direction of motion. A conveyor belt catches debris thrown forwards and upward by the b... | 10/24/2006 |
| 7104403 | Static two stage air classifier A two-stage static air classifier has a feed duct through which particles of a granular mixture fall. A classifying louver plate having fins forming upwardly inclined classifying channels is fitted into a side opening in the feed duct. Particles of a set size are dr... | 09/12/2006 |
| 7086118 | Street sweeper with vacuumized dust control A street sweeper with vacuumized dust control where a rotary broom chamber surrounds a rotary broom. The rotary broom chamber connects by a conveyor housing containing a conveyor mechanism to a hopper having a powered fan and a filter. A vacuum or low pressure is cr... | 08/08/2006 |
| 7082640 | Ambient air backflushed filter vacuum A vacuum cleaning machine has a cannister with an inlet port and at least two outlet ports. At least two filters are disposed inside of the cannister, one in pneumatic communication through each of the outlet ports. At least two valves are disposed outside of the ca... | 08/01/2006 |
| 7044991 | Dust-collecting structure of a dust-collecting device A dust-collection structure of a dust-collection device includes a body, a dust-collection module, a moving seat and a dust-filtering module. The cart body is provided with a blower having a driving member and the top face of the blower is provided with a connection... | 05/16/2006 |
| 7024719 | Sweeper drag shoe A sweeper drag shoe used with a rotary broom in sweeping, whereby escaping debris from under a contact skid is recaptured. The sweeper drag shoe contains a deflection plate that redirects bristle tip movement inwardly to allow the broom to recapture debris which esc... | 04/11/2006 |
| 6966097 | Street sweeper with dust control Street sweeper having dust control from two or more cleaning heads with one air source where one fan provides vacuum for a centrally located rotating broom which is surrounded by a vacuumized chamber and for a gutter broom which is surrounded by a vacuumized chamber... | 11/22/2005 |
| 6952918 | Regenerative control method for continuous regenerative diesel particulate filter device A regeneration control method for regenerating a continuously regenerating diesel particulate filter device capable of regenerating a filter by efficiently removing PM while suppressing the deterioration of fuel consumption and preventing a drivability from being de... | 10/11/2005 |
| 6942103 | Static two stage air classifier A two-stage static air classifier has a feed duct through which particles of a granular mixture fall. A classifying louver plate having fins forming upwardly inclined classifying channels is fitted into a side opening in the feed duct. Particles of a set size are dr... | 09/13/2005 |
| 6923849 | Hydrocarbon adsorbent state determining apparatus A hydrocarbon adsorbent state determining apparatus is provided for compensating the ability of a hydrocarbon adsorbent to adsorb moisture for fluctuations due to a change in the flow velocity of exhaust gases to accurately determine the state of the hydrocarbon ads... | 08/02/2005 |
| 6830599 | Back-flow valve and trigger for cleaning machine A valve and trigger cyclically connect a vacuum and a blower to a filter. The valve box has three openings, the first connectable to the vacuum, the second connectable to the blower and the third connectable to the filter. A gate inside the box, biased by the blower... | 12/14/2004 |
| 6572682 | Self-cleaning filter system using direct electrically heated sintered metal fiber filter media A Diesel particulate filter cartridge system for filtering particulate matter and nitrogen oxide from a flow of air containing particular matter includes a filter support plate with a plurality of cylindrical electrically regenerable filter media members ... | 06/03/2003 |
| 6120583 | Exhaust gas purifier and operating method thereof An exhaust gas purifier, having three or more filter units parallel, wherein if at least one filter unit fails during its generation, it is compensated by the cyclic operation of the maining filter units so that the total function of the exhaust gas purif... | 09/19/2000 |
| 6107603 | Device intended to detect fouling and to locally heat an electrical insulating medium A device intended to measure fouling and to locally heat an electrical insulating medium. At least one electrically resistive heating element (6, 8) is associated with a fouling detection unit. The fouling detection unit includes metallic elements (6, 10)... | 08/22/2000 |
| 6059864 | Apparatus for cleaning filtered particles from an air filter using internal porous tubular members An air filter used for the filtration of air for a central air and heating system with an internal cleaning apparatus fabricated for easy cleaning of particles from the air filter. This internal cleaning apparatus comprising a cylindrical member with prot... | 05/09/2000 |
| 5951746 | Suction device for cleaning purposes In order to develop a suction device for cleaning purposes having a collecting container, which includes a closable suction inlet, a suction outlet and a filter disposed therebetween and is connected to a suction unit by a suction line emanating from the ... | 09/14/1999 |
| 5900043 | Electrostatic filter with process for fast cleaning without breaking confinement Electrostatic filter in which the enclosure (2) is fitted with a flexible membrane (12) , behind which an acoustic wave generator (14) is placed and which vibrates the gaseous contents of the filter to detach retained dust and clean the filter.... | 05/04/1999 |
| 5643539 | Regenerative incineration system A filter utilizes a filter bed having a ceramic media to remove particulates from process emissions upstream of a regenerative incinerator to prevent fouling of the incinerator. To prevent the filter from fouling, the filter is adapted to "bake-off" conta... | 07/01/1997 |
| 5595580 | Diesel particulate filter and control device therefor There is disclosed a diesel particulate filter for collecting and burning particulates and exhaust gases of a diesel engine and a controlled device therefor. The diesel particulate filter includes a wire net of electric resistance metal fastened to a main... | 01/21/1997 |
| 5591240 | Powder paint booth backflow filter apparatus A novel filtering apparatus particularly adapted for a transportable, modular powder spray painting booth with backflow cleaning capability by having two sets of filters each associated with a separate output chamber such that in normal use, a vacuum draw... | 01/07/1997 |
| 5507851 | Filter cleaning apparatus The invention is an apparatus for cleaning accumulations of dust and waste matter from filter media in industrial installations. The dust and waste matter is removed from the filter media with nozzles that move across the filter media in reciprocatory pat... | 04/16/1996 |
| 5458673 | Exhaust gas particulate purifying process for internal combustion engine For regenerating an exhaust gas particulate collecting filter, there is provided an exhaust gas particulate purifying process in which damage to the filter caused by a thermal action can be prevented and further electric power can be saved when an electri... | 10/17/1995 |
| 5348572 | Device for filtering hot and dusty gases A device for filtering hot and dusty gases. The device uses hollow filter components. The components are accommodated in groups in a filter housing (1). Every group communicates with a filtered-gas manifold (21) outside the housing by way of a supply line... | 09/20/1994 |
| 5346533 | Method of monitoring filter components A method of monitoring filter components. The components are hollow and employed for filtering hot and dusty gases. They are accommodated in groups in a housing. Each group communicates through a single supply line with a filtered-gas line. The filtered-g... | 09/13/1994 |
| 5322534 | Self-cleaning upside-down air filter A self-cleaning air filter is formed by placing a flexible filter bag in an upside-down position with its open end firmly supported. Air to be cleaned is pulled upwardly through the bag. When the air stream is shut off, the bag collapses, discharging accu... | 06/21/1994 |
| 4921510 | Vacuum cleaner system A vacuum cleaning system having a receptacle of non-porous material, such as a plastics bag (65), adapted to safely receive and hold hazardous material such as asbestos fibre. Vacuum is applied by a fan (86) to a suction chamber (69) and then through a fi... | 05/01/1990 |
| 4719662 | Dust-removal apparatus for textile machines and machine rooms A dust-removal apparatus for textile machines and machine rooms includes a chamber containing dust-laden air, a clean-air chamber, a tube disposed between and separating the chamber containing dust-laden air from the clean-air chamber, at least part of th... | 01/19/1988 |
| 4681604 | Multistage fluid filter and method A fluid filter (10) comprises a plurality of separate filtration chamber (14-18) with a fluid inlet (12) and a fluid outlet (13). All of the filtration chambers (14-18) are identical and each contain two vertically-spaced doors (28, 29) on one end and two... | 07/21/1987 |
| 4581049 | Solid absorber apparatus for a cyclic absorption process Solid absorber apparatus for a discontinuously operable, cyclic absorption process comprising a housing; a solid absorber material provided in a plurality of juxtaposed chamber-like zones within the housing, the zones each having, in transverse cross-sect... | 04/08/1986 |
| 4565555 | Vacuum collector A unique hybrid shop-style and continuous-duty vacuum collector using a large diameter filter has the advantages and capabilities of both specialized types. Because of efficient design and the use of pleated paper, the effective filter surface area is man... | 01/21/1986 |
| 4557738 | Vacuum collector A unique hybrid shop-style and continuous-duty vacuum collector of reasonable size offers the advantages and capabilities of both specialized types, by substantially multiplying the conventional shop vacuum effective filter surface area, while preserving ... | 12/10/1985 |
