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 |
| 7332081 | Filter device for the clarification of contaminated liquids A filter device for the clarification of contaminated liquids includes a vessel configured to contain the liquid to be clarified. A first carrying disk is arranged within the vessel and is rotationally driven about a rotational axis. Mounting rods are attached to an... | 02/19/2008 |
| 7314556 | Filter disc with panel sectors A panel sector, for a disc filter for separation of liquids from a suspension, includes front and back filter panel assemblies, a sector assembly for mounting the front and back filter panel assemblies, and a top cap for retaining the filter panel assemblies within ... | 01/01/2008 |
| 7182207 | System and process for break detection in porous elements for screening or filtering A detector for breaks in screens and filters employed in material separators includes a transmitter of RF signals and a receiver of RF signals located to either side of a screen. The separator includes a chamber having a barrier to RF signals with a path through the... | 02/27/2007 |
| 7101418 | Method and device for degassing a suspension, specifically a fiber stock suspension The invention relates to a method and a device for degassing of suspension, specifically fiber stock suspension. The method according to the invention is characterized in that separated excess suspension is discharged sideways through an overflow having an overflow ... | 09/05/2006 |
| 7037427 | Filter device for clarifying contaminated liquids A filter device for the clarification of contaminated liquids includes a plurality of disk-shaped filter elements spaced apart from one another and combined into circular or polygonal filter modules. The filter elements are arranged rotatably about a horizontal axis... | 05/02/2006 |
| 6997325 | System and process for break detection in porous elements for screening or filtering A detector for breaks in screens and filters employed in material separators includes a transmitter of RF signals and a receiver of RF signals located to either side of a screen. The separator includes a chamber having a barrier to RF signals with a path through the... | 02/14/2006 |
| 6942796 | Filter device for filtering a liquid A filter unit is disclosed suitable for use in a filter housing. The filter unit comprises superposed and spaced-apart inclined lamellar structures, preferably in the form of hollow truncated cones, each having a lower end side opposite an upper end side and a passa... | 09/13/2005 |
| 6872301 | High shear rotating disc filter A high shear rotating disc filter having a hollow interior and constructed of a porous material such as sintered metal or ceramic with finely structured openings. The disc is mounted and secured onto a hollow shaft. The hollow shaft is connected to a vacuum source, ... | 03/29/2005 |
| 6872310 | Precoated filter for the filtration of flowing media In a particularly noise-free and vibration-free operating precoated filter for filtering for example cooling lubricating flowing media, a filter candle surrounding a riser channel is mounted by means of a riser tube in a separating plate in an axially moveable manne... | 03/29/2005 |
| 6790357 | Media bed support grid A media bed support grid for use with a vessel having an inner surface. The media bed support grid comprises a plurality of filter panels, each filter panel having a plurality of parallel and spaced-apart filter wires, the plurality of filter wires forming a filteri... | 09/14/2004 |
| 6712967 | Liquid filter assembly with concentric filter sleeves of bag-type media A filter element assembly has at least two cylindrically shaped and concentrically arranged filter media sleeves each connected at one end thereof to an inlet plate and each connected at the other end to a closed end terminal plate. Openings are provided in the inle... | 03/30/2004 |
| 6706182 | Caged pleated filter cartridge assemblies and filtration systems employing the same A caged filter cartridge assembly has a pair of coaxially spaced-apart end plates, and a number of tubular filter cartridges extending between said end plates. These end plates include seat recesses having a coaxially disposed retaining ring establishing an annular ... | 03/16/2004 |
| 6585893 | Concentrically-arranged, multi-sleeve bag-type filter element assembly A filter insert includes a plurality of annularly-shaped, bag-type filter sleeves (111, 112, 113) concentrically-arranged. The ends of the sleeves are attached to the flanges of an inlet plate 114, an annular terminal plate 124 or a circular terminal plat... | 07/01/2003 |
| 6572761 | Method for efficient and environmentally clean utilization of solid fuels A process of oxidizing an ash and sulfur containing fuel such as coal in order to power gas turbines using a material such as the oxides of iron which in an oxidized state can be readily reduced and which in a reduced state is readily oxidized. Preferably... | 06/03/2003 |
| 6454940 | Retention of filter elements A filtration apparatus comprises a plurality of filtration sections such as (12, 13), each covered on both opposed faces by a filter cloth (14). Each filter cloth (14) is formed with a compressible edge bead (26) which is received in a corresponding groov... | 09/24/2002 |
| 6391199 | Filtration member for a horizontal disc filter A filter member for horizontal disc filters has a base plate having a peripheral edge and a hub connected to the base plate. The base plate has cavities extending in a radial direction of the base plate at a slant toward the hub, wherein the cavities are ... | 05/21/2002 |
| 6355170 | Dual manifold filtering system In accordance with the present invention there is provided a dual manifold filtering system. The dual manifold filtering system of the present invention, unlike the currently available filtering systems, allows the filter elements to be cleaned from both ... | 03/12/2002 |
| 6240985 | Filling device for shipping container A remote filling device for use with a shipping container is described. A shipping container with specialized connections can be remotely opened using a single lightweight tool using a single drive screw latching mechanism. The actuation of the latching m... | 06/05/2001 |
| 6077428 | Disk filter The invention relates to a filter for the deposition filtration of liquids such as juice, wine, beer or the like. A filter packet (28) of plate-type filter elements (25), stacked one on top of the other, is disposed in a container (3), each filter element... | 06/20/2000 |
| 6017451 | Spider fitting for multi-module filter system, and motive cart assembly comprising same A multi-arm spider fitting including a central hub from which such arms radiate. The arms are adapted at their extremities for coupling with filter modules, so that multiple filter modules can be secured to a single spider fitting, with the filter modules... | 01/25/2000 |
| 5925248 | Disk filter sector having an attachment system outside of flow area A disc filter sector having an improved attachment system includes a sector base and a sector neck. The sector base includes stiffening members that extend through the sector base and include an attachment end, such as a threaded fastener or region, at th... | 07/20/1999 |
| 5792352 | Disc filter and filter elements A disc filter for separation of liquids from suspensions, in particular fiber stock suspensions, having several filter elements, in particular sector-shaped filter elements, which have a frame and filter areas mounted on both sides, over which a filter me... | 08/11/1998 |
| 5730869 | Porous ceramic filter A porous ceramic filter obtainable from a thin and flat green filter material, wherein round components are punched out of the green material and stacked, leaving at least one hollow interior that can communicates with an outlet, and the stack is then sin... | 03/24/1998 |
| 5656162 | Rotating filter A rotating filter including a container (11) for a liquid or suspension to be filtered and a rotor structure (17, 21, 22, 25, 26) being provided at its outer periphery with a filter medium arranged in the shape of at least one circular ring (33) having it... | 08/12/1997 |
| 5637216 | Filter matting for a reversible-flow filter A filter mat for use in reverse rinsing filter devices consisting of at least two filter mat devices and one static rigid filter mat base. The filter mat produces evenly distributed reverse rinse channels that provide even distribution of pressure in the ... | 06/10/1997 |
| 5486290 | Fluid filter collector with opposed ribs In an axial flow fluid filter having two filter elements formed of layers of tissue wound around a central core, a fluid collector is positioned between two filter elements and has a central annulus which surrounds an axial flow path. The central annulus ... | 01/23/1996 |
| 5449458 | Filter system for molten plastic An inlet plate is normally connected to an extruder and formed with an inlet port for supplying a molten synthetic resin under pressure to the port and an outlet plate is normally connected to or part of a mold and is formed with an outlet port in line wi... | 09/12/1995 |
| 5422005 | Rotating disk filter with flow distribution means The invention relates to a horizontal filter with a filter housing, in which an arrangement of superimposed, spaced filter elements is contained, and with distributor means supplying liquid to be filtered to the filter arrangement in a main direction of f... | 06/06/1995 |
| 5403481 | Filter apparatus Described is a filter apparatus equipped with tubular filter elements comprising perforated pipe sections with filter media attached to their outer faces. The flow of the liquid to be filtered is directed onto the filter bodies transversely of the pipe se... | 04/04/1995 |
| 5316675 | Rotatable annular hollow disc for filtering liquids A disc filtering apparatus for filtering liquids, such as fiber pulps suspensions, includes hollow filter discs, each of which has two opposed side walls of filter material. A plurality of circumferentially spaced support arms extend within each hollow fi... | 05/31/1994 |
| 5296140 | Continuous filtration device A continuous filtration device, comprising cells (1) arranged in a carousel around an axis of rotation and each presenting a horizontal axis of tilt, follower elements (9, 10), carried by a lever (7), at least one stationary guiding element (13, 14) for e... | 03/22/1994 |
| 5279734 | Filtration system A filtration system for use in a settling tank includes a star shaped filter having equally spaced radial panels with the filter septums forming the downwardly extending sidewalls of each panel or compartment. The framework of the filter allows radial rem... | 01/18/1994 |
| 5221469 | Filtration system A filtration system for use in a settling tank includes a star shaped filter having equally spaced radial panels with the filter septums forming the downwardly extending sidewalls of each panel or compartment. The framework of the filter allows radial rem... | 06/22/1993 |
| 5100550 | Filter nozzle with annular filter discs A filter nozzle equipped with annular filter discs which establish flow paths (26, 28), serving to conduct the filter liquid and which paths are radial (28) and also penetrate through (26) the filter discs (18). These passages (26) through the filter disc... | 03/31/1992 |
| 5087363 | Filtering cell The filtering cell includes a tank having a base wall and a filter bed supported above the base wall which divides the tank into an upper compartment for receiving a substance to be filtered and a lower compartment for receiving a filtrate. The base wall ... | 02/11/1992 |
| 5068033 | Underdrain assembly with pivotally-mounted and lockable laterals An underdrain assembly contained within a swimming pool filter has a plurality of laterals, each of which is pivotable between a non-operating position and an operating position. Each of the laterals is threadedly attached to the underdrain assembly so th... | 11/26/1991 |
| 5057232 | Filter element and method of filtration The filter element for use in a container includes a central pipe (2) closed along its length and also provided with an opening at a lower end thereof; a cylinder surrounding this central pipe in a concentric manner and having a closable lower end, the cl... | 10/15/1991 |
| 4941975 | Star-shaped filter nozzle A star-shaped filter nozzle has a central member and filter nozzle arms radially protruding therefrom. Each of the filter nozzle arms has one end removably connected in a lateral opening of the central member. The portions of the filter nozzle arms and ce... | 07/17/1990 |
| 4865813 | Disposable analytical device The disposable analytical device includes an outer shell portion having an interior which is divided into reagent chambers and a test sample chamber. The reagent chambers are non-communicable with each other. However the test sample chamber is communicabl... | 09/12/1989 |
| 4793928 | Polymer filtering apparatus A polymer filtering apparatus (1) is used to filter a molten polymer in a step of extruding a molten polymer to manufacture films and fibers. A plate type filter medium (4), which is incapable of resisting a filtration pressure, is supported at its rear p... | 12/27/1988 |