Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7850750 | Modularized hybrid dust collector There is provided a modularized hybrid dust collector for treating dust generated in various industrial processes. The box-shaped hybrid dust collector includes a first box-shaped dust collecting unit or a first cylindrical dust collecting unit, to which the inertia... | 12/14/2010 |
| 7799103 | Filter cleaning mechanisms In one aspect, the present invention provides a filter cleaning mechanism comprising: a filter material (37) for filtering out dust and dirt particles from air passing therethrough; a frame (32, 34, 35, 38, 39) for supporting said filter material (3... | 09/21/2010 |
| 7517377 | Dust collecting unit for use in cleaner This dust collecting unit for use in a cleaner includes an inlet port through which air and dust is taken in, a dust catch room into which the air and dust taken in through the inlet port is led, an air flow path for separating a part of air taken in through the inl... | 04/14/2009 |
| 7410529 | Filter service system and method According to an exemplary embodiment of the present disclosure, a system for removing matter from a filtering device of a work machine includes a gas pressurization assembly. An element of the gas pressurization assembly is removably attachable to a first orifice of... | 08/12/2008 |
| 7351273 | Apparatus and method for separating dust constituents out of an explosive dust-air mixture A method and an apparatus (10) for separating dust constituents out of an explosive dust-air mixture which is passed through a filter housing (26) with filter elements having filter surfaces use a dust container (64), which can be connected in a... | 04/01/2008 |
| 7346957 | Vacuum cleaner A vacuum cleaner includes an electric blower for generating a suction air stream and a dust collecting unit for collecting dirt particles contained in the suction air stream. The suction air stream passing through the dust collecting unit into the electric blower fl... | 03/25/2008 |
| 7329071 | Device for the pneumatic conveying of particulate and powdery bulk material Devices for the pneumatic conveying of particulate and powdery bulk goods to obtain high conveying speeds with low energy expenditure. The devices have a fluidized conveying pipe with fluidizing elements, in which pipe the fabric layers of the fluidizing elements ar... | 02/12/2008 |
| 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 |
| 7294160 | Air cleaner The present invention comprises concerns a novel air cleaner having an inner mesh barrier. This inner mesh barrier has a plurality of openings, and is generally cylindrical, having an inner mesh barrier liner surface, and an inner mesh barrier outer surface. Further... | 11/13/2007 |
| 7282074 | Auxiliary dust collection system An auxiliary dust collection system can be interposed between a sander or other dust producing tool and a vacuum source, e.g., shop vacuum. This auxiliary system has a cyclonic separator connected by a flexible hose to the tool and by another hose to the vacuum sour... | 10/16/2007 |
| 7282155 | Device and a method for filtering a fluid A device for filtering a fluid includes a fiber housing having an inlet end with at least one inlet and an outlet end with at least one outlet. The fiber housing surrounds and defines an outer bound for a plurality of fibers extending longitudinally in the fiber hou... | 10/16/2007 |
| 7228592 | Upright vacuum cleaner with cyclonic air path A vacuum cleaner having a base unit, a body unit pivotally mounted to the base unit, a suction generating device, and first and second dirt separation members. The first dirt separation chamber includes an inlet to receive airflow from the base unit, an outlet, a fi... | 06/12/2007 |
| 7207083 | Electric vacuum cleaner The electric vacuum cleaner is disclosed which includes a main body within which an electric blower and cyclonic separation cylinder are provided. A dust collecting case is provided in communication with the cyclonic separation cylinder to receive dust that has been... | 04/24/2007 |
| 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 |
| 7105040 | Wine must and pomace pump A wine must pump (10) for pumping a wine product (23) such as must or pomace, has an intake port (14) for receiving the wine product (23), a discharge port (16) for discharging the wine product (23) under pressure, vacuum ch... | 09/12/2006 |
| 7074248 | Filter cleaning device of cyclone vacuum cleaner A filter cleaning device for a cyclone vacuum cleaner which comprises a cyclone body having a suction port and a discharge port, a dust collecting receptacle connected to the cyclone body for collecting dusts separated from air drawn in through the suction port, and... | 07/11/2006 |
| 7070636 | Cyclonic vacuum cleaner with filter and filter sweeper A bagless vacuum cleaner (10) includes a nozzle assembly (16) having a suction nozzle for picking up dirt and debris from a surface to be cleaned and a canister assembly (18) including a cavity (32). A dust collection assembly (12)... | 07/04/2006 |
| 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 |
| 6974487 | Cooling air cleaning device for a harvesting machine A device for cleaning a perforated radiator cage with at least one end face and peripheral side on an agricultural harvesting machine, wherein the device consists of an external brush which is associated with the radiator cage and which is in turn surrounded by a un... | 12/13/2005 |
| 6959466 | Power management system for street sweeper A power management system for a surface maintenance machine, such as a street sweeper is disclosed. The system includes a variable speed engine for transporting the surface maintenance machine, a hydraulic pump powered by the engine, a vacuum fan motor powered by th... | 11/01/2005 |
| 6942717 | Venturi effect material return system of a material collection system and appertaining method A material return system of a material collection system and appertaining method permits fine material collected in a fine material collector to be returned to a main debris tank by taking advantage of the venturi effect, thus permitting a relatively trouble-free op... | 09/13/2005 |
| 6932857 | Multi-stage collector and method of operation A multi-stage collector of the type used to collect particles from industrial gas. The collector can contain multiple narrow and wide zones formed by a plurality of parallel corrugated plates. Contained in the narrow zones can be elongated electrodes with sharp lead... | 08/23/2005 |
| 6916351 | Cyclone-type dust collecting apparatus for a vacuum cleaner The cyclone-type dust-collecting apparatus for a vacuum cleaner according to the disclosed invention has a grill cleaning means for automatically removing fine dusts covering the grill when the cleaner is in use. The grill cleaning means preferably comprises a grill... | 07/12/2005 |
| 6905528 | Conveying air filtration system An arrangement used for filtering out conveying air when supplying fiber material to a processing machine is provided. The arrangement has an essentially vertical filling chute for the fiber material, the chute having an upper intake opening and a lower exit opening... | 06/14/2005 |
| 6905529 | Wire Filter cage An improved filter support structure for supporting filter media. The support structure includes two sections removably coupled together with an improved coupling assembly. The first section has a cross section presenting a first width spaced apart from a second wid... | 06/14/2005 |
| 6840974 | Self-cleaning filter A self-cleaning filter and cooling system are disclosed for filtering ambient air used to cool the interior of an equipment enclosure. The system includes an enclosure for housing predetermined equipment to be cooled, the enclosure including an air intake port and a... | 01/11/2005 |
| 6814768 | Oil separator An oil separator for use in the crankcase of an internal combustion engine. A rotatable shaft is located in the crankcase and a case lead-in is sealably fixed to the crankcase and concentric to the shaft. A flat filter disk has one face which abuts the case lead-in ... | 11/09/2004 |
| 6638329 | Filter having a folded dust filter element and a cleaning device for the folded dust filter element A filter for filtering dust-containing air including a filter insert (2) and a cleaning device (3) having a contact element (6) mechanically contacting the filter insert along an end edge (4a/4b) of a folded dust filter element (5) forming part of the fil... | 10/28/2003 |
| 6627166 | Gas filtering device The invention concerns a device for filtering gas comprising a microporous or microfibrous adsorbent filter (6) and means for forcing an air flow between an exhaust hood (2) and outlet duct (3) for the filtered air. The invention is characterized in that ... | 09/30/2003 |
| 6602328 | Gas turbine suction air filter, a gas turbine using the same and a method for using the same A gas turbine suction air filter is provided wherein, despite a large capacity, dust is easily removed by an ultrasonic washer. A gas turbine suction air filter (1) has a box-like frame member (3) and a filter cloth (5) contained in the frame member (3). ... | 08/05/2003 |
| 6581778 | Powder receiving device A powder receiving device has a loading chamber with an integral dust collector. The dust collector preferably includes at least one bag filter which filters air taken from above powder loaded into the loading chamber. The filtered air is then fed either ... | 06/24/2003 |
| 6569218 | Self spin-cleaning canister vacuum A method of using vacuum-cleaner filters includes mounting a cylindrical-shaped filter cartridge coaxially on a rotatable spindle. Then air is drawn radially through a filter material wall of the filter cartridge. Periodically, the cartridge filter on the... | 05/27/2003 |
| 6544309 | Device for cooling an electric module and a technical appliance An apparatus having at least one membrane filter for a superficial filtering of at least dirt particles from inflowing cooling air for cooling an electrical module and also at least one cooling device for establishing an air flow in the housing and for di... | 04/08/2003 |
| 6517612 | Centrifugal filtration device This invention is directed to a continuously cleanable, high performance filtration apparatus and a method for using the apparatus. The apparatus is a radial inflow centrifugal filtration device, which includes a filter element located within a chamber an... | 02/11/2003 |
| 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 |
| 6280491 | Cartridge filter An apparatus for separating and filtering pollutants from a fluid flow by using inertia to separate a proportion of the pollutants from the fluid flow passing through a constricted passage between a pair of filter elements to an outlet between the filter ... | 08/28/2001 |
| 6270732 | Particle collection apparatus and associated methods A particle collection apparatus has a chamber, one or more filters and a back pressure system. The filters are located in the flow path through the system to collect the particles from an input gas stream. The back pressure system applies a pulse of gas a... | 08/07/2001 |
| 6238464 | Method and apparatus for separating droplets for particles from a gas stream A device for separating particles contained in a gas stream and the associated process use a spongy type separator to process gas streams containing liquid or solid particles of a size substantially smaller than one micrometer. The separator is advantageo... | 05/29/2001 |
| 6202765 | Device having a filter, a filter vibrating means and a scraper used for sucking off drillings A device for sucking off drillings during the drilling of boreholes, comprising a suction fan (9) and a filter (10) as well as an opening closeable by a lid for emptying the drillings reception space (8) preceding the filter (10), in which, for the simple... | 03/20/2001 |
| 6117200 | Electromagnetic filter cleaning system A mobile surface maintenance machine has a cleaning brush and a dust collection system mounted on the machine. The dust collection system includes a vacuum fan, a filter housing having an air inlet and a pleated filter element positioned within the housin... | 09/12/2000 |