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| Number | Title | Issue Date |
| 7815701 | Portable apparatus for cleaning air filters A portable apparatus for cleaning an elongated air filter includes housing, a generally closed chamber which is formed within the housing and which has an irregular inner wall surface capable of providing resistance to a fluid flow discharged into the chamber and a ... | 10/19/2010 |
| 7494521 | Trigger mechanism for dust filter pulse cleaning system A trigger mechanism for a dust filter pulse cleaning system includes a trigger frame, a trigger valve assembly including a reciprocating valve member having a valve head resiliently urged toward a valve seat and a striker head at an opposite end, a trigger arm pivot... | 02/24/2009 |
| 7422626 | Method and device for declogging filter A method of declogging at least one filter of a plant for manufacturing uranium oxide from uranium hexafluoride, including separating, from the wall of the filter, uranium oxyfluoride particles deposited, by a stream of inert gas such as nitrogen, injected into the ... | 09/09/2008 |
| 7418997 | Radiator debris removing apparatus and work machine using same A radiator assembly includes a finned radiator core and a debris removing apparatus having a compressed air inlet and at least one compressed air outlet configured to direct compressed air through the radiator core. A work machine such as a wheel loader includes a r... | 09/02/2008 |
| 7393387 | Particle filter cleaning apparatus The invention is an apparatus for cleaning one or more cylindrical filters. An enclosure contains the entire apparatus in which each filter is supported on its own pair of rotating horizontal rollers. An assembly of air nozzles adjacent to a first end of each rotati... | 07/01/2008 |
| 7371266 | Apparatus for cleaning a diesel particulate filter with multiple filtration stages The present invention is directed to a filter cleaning device, in particular, diesel particulate filters. In one embodiment, the device includes a source of high pressure fluid and a mechanism transport the fluid to a nozzle or nozzles; an actuator for moving the no... | 05/13/2008 |
| 7357829 | Diesel particulate filter cleaning device and method Multiple storage tanks and multiple valves that open simultaneously allow gas charges stored at superatmospheric pressure in the tanks to simultaneously discharge and form a single substantial percussion pulse that dislodges particulate matter from a diesel particul... | 04/15/2008 |
| 7311823 | Pool filter cleaning device A pool filter cleaning device (1) which allows a person to thoroughly clean a filter cartridge (15) quickly and easily with minimal amount of splash back. The pool filter cleaning device (1) is comprised of a handle (2), an angled head se... | 12/25/2007 |
| 7309366 | Bag cleaning compressed air nozzle A process and apparatus for cleaning filter cake from the interior of a baghouse bag. A nozzle through which compressed gas flows is positioned on the interior of a bag such that gas is directed to, and thereby disrupts, the filter cake. The compressed gas flows in ... | 12/18/2007 |
| 7288130 | Cassette filter A cassette filter comprising a frame and a pleated filter material that is inserted therein, in addition to a protective grid having passage holes. The protective grid is fastened at a distance from the filter material in the frame and has a flow resistance that is ... | 10/30/2007 |
| 7282075 | Z-filter media with reverse-flow cleaning systems and methods A method for cleaning a filter having Z-media includes providing a filter having Z-media and cleaning the media construction by directing a pulse of compressed gas into the media construction through the downstream flow face. Filter elements useable with such method... | 10/16/2007 |
| 7264422 | Rotary separator for mineral fibers A method and apparatus for collecting and forming loose fill fiber material from an air stream includes introducing a combined fiber and air stream onto a surface of a rotatable drum. The rotatable drum allows the air to flow through the surface of the drum while co... | 09/04/2007 |
| 7228910 | Safety mechanism for weight-set downhole tool A safety trip button (12) is described for a weight-set downhole tool. The button operates between the tool body (36) and a sleeve (34) of the tool, locking them initially together. When the tool reaches a selected formation (44) in a wel... | 06/12/2007 |
| 7195659 | Reverse-flow cleaning systems and methods A device and method for cleaning a filter element. The device including a valve interconnected to a blowpipe. A nozzle is positioned at an end of the blowpipe and to direct a pulse of compressed gas into the filter element. The nozzle includes a body and a diffuser ... | 03/27/2007 |
| 7186281 | Dust-removing device for the dust-collecting tank of a dust-collecting machine A dust-removing device for the dust-collecting tank of a dust-collecting machine includes a guide frame installed inside the dust collecting tank and having a central guide rod for a brush base to move up and down thereon. The brush base has its outer circumferentia... | 03/06/2007 |
| 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 |
| 7025811 | Apparatus for cleaning a diesel particulate filter with multiple filtration stages The present invention is directed to a filter cleaning device, in particular, diesel particulate filters. In one embodiment, the device comprises a source of high pressure fluid and means to transport the fluid to a nozzle or nozzles; an actuator for moving the nozz... | 04/11/2006 |
| 6969428 | Self-cleaning system for dry recovery of processing mists in automatic machines for spraying paints Suitable corrugated filter grids (7, 7′) are mounted on the suction intakes (6, 6′) and are positioned with a downward inclination towards the conveyor (4) of the machine, their lower ends allowing drops to fall on to this conveyor. The suct... | 11/29/2005 |
| 6959818 | Filter and filter cleaning apparatus and related methods Apparatus and methods include an improved filter (203) and cleaning process. ... | 11/01/2005 |
| 6923329 | Screen apparatus A screen apparatus includes a tank, a first cylidrical screen disposed inside the tank to form a first chamber, and a second cylidrical screen disposed outside the first cylindrical screen. The second cylindrical screen defines a second′ chamber facing the first c... | 08/02/2005 |
| 6745430 | Apparatus for cleaning elongated cylindrical filters The invention is a cleaning apparatus for cleaning elongated and cylindrical filters, commonly referred to as pleated bag filters or pleated bag replacements for fabric sock filter bags, that are open on one end and closed on the other end. The filter is being rotat... | 06/08/2004 |
| 6322618 | Adjustable duct assembly for fume and dust removal and filter cleaner An adjustable duct assembly for the collection of fumes, dust and the like comprises two duct sections connected end to end by a duct support system comprising two elongate arms pivotally connected, the arms attached to the adjacent ends of the ducts, ext... | 11/27/2001 |
| 6299660 | Accordion filter with a protective mask A filter element that is able to be sealingly secured in position in a filter housing, comprising an accordion fold pack. The oncoming-flow side of accordion fold pack is covered by a latticed protective mask. The protective mask is sealingly joined to al... | 10/09/2001 |
| 6193772 | Self-propelled harvesting machine having a selectively engageable suction cleaning device of a filter A self-propelled harvesting machine includes a drive engine, a cooler and a cooling fan preceded by a cooling-air cleaning device incorporating a filter for retaining dirt particles in the drawn-in cooling-air and also including a suction device for remov... | 02/27/2001 |
| 6129852 | Flow control member for a filter cartridge cleaning system The present invention relates to flow control devices (4) for use with cartridge filter cleaning systems. The flow control device (4) includes a cylindrical portion (8) which extends away from a conical portion (6). When the device (4) is used with a nozz... | 10/10/2000 |
| 6074448 | Device for use in filtering separators A device adapted to indicate the degree to which a filter is soiled is prded, for use in filtering separators of the type having bag-, pouch-, or cartridge-shaped filters. The device has a hose- or tube-shaped air conveyance section. The air conveyance s... | 06/13/2000 |
| 6041469 | Dust collector with long fan incorporated therein A dust collector which comprises a long suction fan and a movable filter adaptable to the fan and whose filter permits dust itself caught thereon to function as a three-dimensional filter to thereby enable collection of micro dust. The dust collector comp... | 03/28/2000 |
| 5980598 | Filter cleaning system including individually driven belt mounted extending nozzles A filter cleaning apparatus for removing dust and debris from a stationary filter having a dust and debris collecting surface. The apparatus includes a longitudinally extending duct having a lengthwise slot formed therein. A belt in the duct extends acros... | 11/09/1999 |
| 5925155 | Rotary drum air filter A rotary drum air filter has a drive tire where a rubber tire runs against a drive rim attached to the drum co-axial therewith. A seal on the forward part of the drum rides upon a conic section on the scroll. Differential air pressure across the drum hold... | 07/20/1999 |
| 5846300 | Fabric filter with gas inlet geometry and method The present invention provides a fabric filter apparatus and a method of feeding dusty gas to the dusty gas section of a fabric filter apparatus. The housing (11) of the fabric filter apparatus includes at least one substantially vertically extending duct... | 12/08/1998 |
| 5827338 | Filter cleaning system including belt mounted extending nozzle A filter cleaning apparatus for removing dust and debris from a stationary filter having a dust an debris collecting surface. The apparatus includes a longitudinally extending duct having a lengthwise slot formed therein. A belt in the duct extends across... | 10/27/1998 |
| 5814114 | Airborne waste filter arrangement An airborne filter system includes an array of drum filters and a frame disposed in a permanent operative position proximate the array. A plurality of longitudinal members are operatively disposed on the frame, each longitudinal member extending into the ... | 09/29/1998 |
| 5735337 | Cleaning device internally mounted within a tubular filter A pruning apparatus includes a vehicle or other mobile platform, a stabilizing member pivotally supported by the mobile platform, at least one cutting blade supported by the stabilizing member, and a leveling mechanism connected to the stabilizing member ... | 04/07/1998 |
| 5676197 | Mounting for drive mechanism of heat exchanger screen cleaning wand A self-propelled windrower includes an engine compartment containing an engine-driven fan for pulling cooling air through a screen covering a circular air inlet leading into the compartment. The fan also is coupled for creating a suction in an air duct ex... | 10/14/1997 |
| 5651802 | Fluid filter for separating entrained particulate matter from a moving fluid stream A fluid filter is provided for separating entrained particulate matter from a moving fluid stream. The fluid filter includes a filter structure for mounting the filter on a supporting surface, a plurality of nested filter frames, and a filtration medium c... | 07/29/1997 |
| 5632903 | High volume self-cleaning filter The present invention relates to a filter unit, and a filtering system using the filter unit, comprising a housing having a longitudinal axis and an inlet and outlet for fluid containing solid contaminants and a back-flush inlet and back-flush outlet for ... | 05/27/1997 |
| 5584900 | Apparatus for cleaning cylindrical air filters An apparatus for cleaning a generally cylindrical air filter. The apparatus includes a carriage for receiving the air filter in a generally axially vertical orientation. The carriage is selectively turned to orient the filter generally horizontally. Dirt ... | 12/17/1996 |
| 5565012 | Self-cleaning fume extraction device A portable vacuum for fume and dust extraction includes a main housing shell, at least one fan within the shell for creating suction and a motor for driving the fan. A separate filter container is located within the main housing shell and a filter is loca... | 10/15/1996 |
| 5558761 | Fluid filtering unit with movable collector for cleaning The fluid filtering unit comprises a filter element through which fluid being filtered must pass and a device for cleaning the filter element in situ without interruption of the filtering process. The cleaning device comprises a collector movable between ... | 09/24/1996 |
| 5529592 | Filtering separator A filtering separator with a reverse-flow cleaning apparatus has a chamber that travels inside the clean gas area and is provided with a compressed air supply line plus at least one injector. The chamber is divided into a suction area for the drawing in o... | 06/25/1996 |
