Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 8110014 | Distributor for rinse air An air distribution system for providing rinse air to a gas cleaner is provided, which includes a filter housing, a holding plate wherein holes are arranged in concentric circles for holding filter bags or filter elements in the filter housing, filter bags or filter... | 02/07/2012 |
| 7438735 | Filter apparatus with automatic cleaning A filter apparatus includes a gas-impermeable outer conduit having an open end and a closed end. The interior of the outer conduit is axially divided into first and second sides. A first clean and first dirty flow path are defined within the first side. A first gas-... | 10/21/2008 |
| 7393509 | Honeycomb structure The present invention provides a honeycomb structure 1 comprising partition walls 2 so as to form a plurality of cells 3 extending from one end face 42 to the other end face 44, and a plug portion 4 plugging the cell 3 | 07/01/2008 |
| 7338642 | Exhaust gas purification device for engine A main particulate filter having a relatively large volume is arranged in an exhaust passage of an engine, and an auxiliary particulate filter having a relatively small volume is arranged in the exhaust passage upstream of the main particulate filter. The main and a... | 03/04/2008 |
| 7318249 | Vacuum collector having sweeping device A vacuum collector includes a filter housing, a filter member disposed in the filter housing, and a sweeping device disposed in the filter member for sweeping the filter member, to sweep of dirt from the filter member, and to allow the dirt to be removed from the fi... | 01/15/2008 |
| 7318848 | Dust collector for a vacuum cleaner A dust collector is disposed between an intake port and an exhaust port in a vacuum cleaner. Air flows from the intake port into the exhaust port along an airflow path in the dust collector. The dust collector includes a dust-collecting net disposed in the path, and... | 01/15/2008 |
| 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 |
| 7300481 | Method and device for cleaning filters for dust-laden waste gases The invention relates to a method for cleaning filters for dust-laden waste gases, including several filter elements (2) which are arranged vertically in a filter housing (1) and which have an upper open end (16) and a lower closed end (15 | 11/27/2007 |
| 7288137 | Particulate trap A particulate trap has a plurality of filters and an air distributor. The air distributor has a first flow member and a second flow member. Each of the first and second flow members have a plurality of openings to allow exhaust flow through the plurality of filters.... | 10/30/2007 |
| 7273514 | Apparatus and method for filtering particulate and NOx emissions An apparatus and method for filtering particulate from an internal combustion engine by use of monolithic particulate trap systems having porous walls (2c, 24c). The porous walls (2c, 24c) filter the particulat... | 09/25/2007 |
| 7269942 | Wall flow particulate trap system A wall-flow particulate trap system regenerated by reverse flow of filtered exhaust gas through porous walls of a plurality of tubular passages is disclosed. The system includes a particulate trap having an inlet and an outlet, the particulate trap adapted to receiv... | 09/18/2007 |
| 7208214 | Honeycomb structural body and die for forming honeycomb structural body by extrusion A honeycomb structural body having a plurality of cells and partition walls defining the cells, wherein a cross-section of each partition wall perpendicular to the flow direction of a fluid to be permeated has a grille shape of which gratings cross in x axis and Y a... | 04/24/2007 |
| 7204965 | Filter catalyst for purifying exhaust gases A filter catalyst is for purifying exhaust gases emitted from internal combustion engines and including particulates, and includes a wall-flow honeycomb structure and an upstream-side straight honeycomb structure. The wall-flow honeycomb structure includes inlet cel... | 04/17/2007 |
| 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 |
| 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 |
| 7078004 | Diesel oxidation catalyst The present invention relates to a method and article for treating a diesel engine exhaust stream. The stream is contacted with an upstream catalytic composition having a cerium component and/or a zeolite component to reduce the quantity and amount of the particulat... | 07/18/2006 |
| 7077888 | Device for separating dust from flue gases from combustion plants, especially solid fuel combustion plants The invention relates to a device for separating dust from flue gases from combustion plants, especially solid fuel combustion plants, comprising at least one dust filter via which the flue gases are guided, and by means of which the dust from the flue gases can be ... | 07/18/2006 |
| 6989045 | Apparatus and method for filtering particulate and reducing NOx emissions An apparatus and method for filtering particulate from an internal combustion engine by use of monolithic particulate trap systems having porous walls (2c, 24c). The porous walls (2c, 24c) filter the particulat... | 01/24/2006 |
| 6908494 | Multistage air cleaner including pulse cleaning system A V-pack filter includes a frame construction having a first frame structure and a second frame structure. The V-pack filter also includes first and second panel sections mounted in extension between the first and second frame structures. The first panel section has... | 06/21/2005 |
| 6899742 | Cleaning arrangement for a suspended particle filter In a cleaning arrangement for a filter element disposed in a gas flow channel and including a plurality of filter pockets, a flow blocking element arranged adjacent the filter element at the downstream side thereof and having openings movable with the flow blocking ... | 05/31/2005 |
| 6890365 | Reverse-flow baghouse An apparatus and method for removing particulate from a particulate-laden gas stream are disclosed. The apparatus and method include a reverse-flow process for cleaning filter bags with a cleaning gas stream. The process includes: flowing a particulate-laden gas str... | 05/10/2005 |
| 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 |
| 6770116 | Regeneration device of exhaust gas purification filter and filter regeneration method A regeneration device of an exhaust gas purification filter that reduces the regeneration time of the filter. The regeneration device includes a plurality of first temperature detectors arranged in casings to detect the temperature in each casing and a second temper... | 08/03/2004 |
| 6749405 | Reversible pivoting vane rotary compressor for a valve-free oxygen concentrator A reversible pivoting vane rotary compressor includes a housing having a generally cylindrical chamber defined by an inner wall. A rotor is mounted eccentrically within the chamber to define about the rotor a generally crescent shaped compression chamber, which narr... | 06/15/2004 |
| 6736870 | Filter device The invention describes a filter device having filter elements (2 through 6; 12 through 20; 22 through 25) made of ceramic material which are combined into at least one filter element group (1, 11, 21) in which the filter elements ... | 05/18/2004 |
| 6733574 | Filter apparatus A filter apparatus for use with a fluid bed processor includes a movable filter bundle that can be selectively moved within a fluid bed chamber. The movable filter bundle includes one or more filters attached to corresponding filter mounts on a support structure. Th... | 05/11/2004 |
| 6729154 | Air conditioner An air conditioner having a dust removing device which enables dust having stuck to its filters to be automatically removed without fail and prevents the removed dust from sticking again to the filters is to be provided. It is equipped with a sliding device 6 | 05/04/2004 |
| 6658988 | Apparatus and process for removing solid particles from gases An apparatus for removing solid particles from a gas containing solid particles, comprising a filter container, a plate provided with openings across the filter container such that the plate divides the container in an upper and lower space and a number o... | 12/09/2003 |
| 6558443 | Method and arrangement for cleaning filters In a method and apparatus for cleaning filters in which raw gas with particles suspended therein is conducted from a raw gas space to a clean gas space and through which intermittently a back-flushing gas is conducted from the clean gas space to the raw g... | 05/06/2003 |
| 6458178 | Filter dedusting arrangement in a vacuum cleaner The invention relates to a filter dedusting arrangement in a vacuum cleaner, wherein dedusting of the filter or filter-parts is effected by supplying a secondary airflow, in a known manner. The distinctive feature of the invention is that the secondary ai... | 10/01/2002 |
| 6391073 | Air cleaner An air cleaner includes a cylindrical cleaning filter, and a case rotatably receiving the cleaning filter therein. A dust-removing brush is disposed to contact with a filter portion of the cleaning filter, and a manipulating device coupled to the cleaning... | 05/21/2002 |
| 6342083 | Filter device for a cheese-producing textile machine A filter device (4) for a cheese-producing textile machine (1) having a plurality of pneumatic devices, e.g., open-end spinning devices (2), service units (3), etc. The filter device (4) has negative pressure filter chambers (6, 6'), each divided via a cl... | 01/29/2002 |
| 6217637 | Multiple stage high efficiency rotary filter system An apparatus and method for filtration of particulate matter in fluid streams. A unique high efficiency, two element filter embodying an enclosure containing a tandem rotary disk and drum filter mounted on a common shaft is described. A method of operatio... | 04/17/2001 |
| 6120572 | Ring-shaped air distribution disc and an air distribution device having such an air distribution disc A ring-shaped air distribution disc (11) for an air distribution device for providing rinsing air to an air cleaner provided with filter bags is provided. The ring-shaped air distribution disc (11) has a width that slightly exceeds the diameter (d) of at ... | 09/19/2000 |
| 6045618 | Microwave apparatus for in-situ vacuum line cleaning for substrate processing equipment An apparatus for minimizing deposition in an exhaust line of a substrate processing chamber. The apparatus includes first and second members having opposing surfaces that define a fluid conduit between them. The fluid conduit includes an inlet, an outlet ... | 04/04/2000 |
| 5948127 | Cyclone dust collector A cyclone dust collector wherein the interior of a cyclone body is divided into an upper space and a lower space by a partition member provided with a plurality of cylindrical filters, a suction port is so provided as to communicate with the lower space, ... | 09/07/1999 |
| 5941066 | Device for purifying the exhaust gas of an internal combustion engine A device for purifying the exhaust gas of an internal combustion engine is disclosed. The device comprises a collision collecting type filter for collecting particulates which is arranged in an exhaust passage, can vary a pressure in the exhaust passage o... | 08/24/1999 |
| 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 |
| 5788746 | Method for cleaning a filter element and a filter module for a filter installation; a method of filtering crude or contaminated gas and a filter installation The invention relates to a filter installation having at least one filter element for the filtering of a crude gas containing impurities, in particular particulate impurities. The crude gas flow to be filtered can be supplied to the filter installation vi... | 08/04/1998 |
| 5711775 | Sweeper with electromagnetic filter cleaning A sweeping machine includes a housing, wheels for moving the housing and a sweeping brush mounted on the housing. There is a hopper positioned adjacent the brush to receive dust and debris from the rotating brush. A dust collection chamber is located on t... | 01/27/1998 |
