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| Number | Title | Issue Date |
| 7410064 | Circular-cylinder sieve In a cylindrical sieve, a first frame 7 is provided with a first ring plate 7a arranged in a radial direction and a ring plate 7b extended inward in an axial direction X of the sieve from an inner end of the first ring plate 7 | 08/12/2008 |
| 7380671 | Process for size classifying ammonium sulfate crystals which are present in a suspension The invention relates to a process for size classifying ammonium sulfate crystals using a screen, said process comprising feeding a feed suspension to the screen, said feed suspension comprising said ammonium sulfate crystals in an ammonium sulfate solution, size cl... | 06/03/2008 |
| 7296684 | Screen for cleaning a fiber suspension A screen, for cleaning a fiber suspension, includes at least one separating unit containing a housing, a parabolic rotor, a screen basket, an accept chamber, and a reject outlet. The reject outlet is located in the vicinity of the maximum rotor diameter. The screen ... | 11/20/2007 |
| 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 |
| 7168570 | Screen cylinder with performance boosting configuration A screen cylinder (125) used for screening cellulosic fibrous material pulp in the pulp and paper industry incorporates first (66) and second (67) downstream surfaces (16) having contoured slopes that form a funnel entrance of the grooves... | 01/30/2007 |
| 7097044 | Dry separation of contaminants from polyester materials A method for separating polyester materials from contaminants is disclosed suitable for, for example, a polyester recycling system. The method is a dry separation method and includes rapidly spinning a mixture of polyester and contaminants within a cleaning chamber.... | 08/29/2006 |
| 7052599 | Method and apparatus for reuse of abrasive fluid used in the manufacture of semiconductors An apparatus and method recycles the abrasive fluid or slurry effluent used in the polishing step in the manufacture of semiconductors. Agglomerations of abrasive grains built up in the slurry effluent are crushed using a mill, ultrasonic oscillation, or pressurized... | 05/30/2006 |
| 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 |
| 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 |
| 6883669 | Multi-element airfoil for pulp screens A the operation of pulp screening apparatus may be improved by employing a multi element foil having a leading foil section and a trailing foil section spaced from and trailing leading section so that adjacent surfaces of the sections one formed by a portion of a pr... | 04/26/2005 |
| 6726022 | Screening device and rotor for use in a screening device Apparatus for the screening of fiber suspensions is disclosed including a housing, a reject outlet and an accept outlet, a screen located within the housing, a rotor including pulsation wings mounted therein, a reject chamber in the housing for collecting a reject p... | 04/27/2004 |
| 6585116 | Screening apparatus for fiber suspension A screening apparatus is used for screening acceptable and rejectable material from a pressurized fiber suspension. The screening apparatus includes a housing, a rotor, a screen basket and at least one sensor. The screen basket is positioned generally con... | 07/01/2003 |
| 6260709 | Membrane filter element for chemical-mechanical polishing slurries A filter media for physically separating particles of an abrasive media having a given mean average particle size from a chemical-mechanical polishing (CMP) slurry. The abrasive media has a particle size distribution including particles larger than the me... | 07/17/2001 |
| 6253925 | Mechanical gap filter The invention relates to an arrangement (5) for a filter (6) for plastic material in the form of granulates supplied to an injection nozzle (7), whereby accommodated internally in a casing (8) is a filter body (20) extending in the longitudinal sense of t... | 07/03/2001 |
| 6206204 | Screen apparatus A screen apparatus of the invention is provided with a tank for receiving a papermaking material; a screen situated inside the tank for dividing the tank into a first chamber and a second chamber to separate a foreign substance from the papermaking materi... | 03/27/2001 |
| 6193073 | Paper stock screening apparatus and method Pressure screening apparatus for screening a suspension of paper fiber stock employs a rotor in which a single impulse or foil member is carried or positioned to move along a discrete portion of the screen surface. This arrangement improves efficiency of ... | 02/27/2001 |
| 6155427 | Zoned pressure screen Pressure screening apparatus for screening a suspension of papermaking stock employing an enclosing housing and a cylindrical screen, with a drum type rotor, has the screen divided or formed with axially spaced annular screening zones and a corresponding ... | 12/05/2000 |
| 6120647 | Simplified liquid removal system for a cellulose pulp digester A vertical pulp treatment vessel having a top and bottom, such as a continuous or batch digester, has at least a first substantially annular screen assembly disposed within the vessel between the top and bottom. A first substantially annular header is ass... | 09/19/2000 |
| 6010012 | Fluidizing detrashing impeller A de-trashing unit has a rotor fabricated from steel blank. The rotor has two swept blades with blunt leading edges and relieved trailing edges. The rotor is driven to rotate over a trash screen with holes of between one-quarter and one-half inch in diame... | 01/04/2000 |
| 5960962 | Screen A pressure screen comprises an outer housing with a pulp inlet, and accepts and rejects outlets and an advantageous mount of a stationary screen drum (screen cylinder) in the housing. The screen drum is secured at an upper end flange with bolts to an inte... | 10/05/1999 |
| 5799798 | Screen cylinder for screening high consistency pulp A screen cylinder is adapted to be used with a stirring unit for screening high consistency pulp to be received in the screen cylinder. The screen cylinder includes a plurality of parallel supporting plates, each of which is formed with a plurality of tra... | 09/01/1998 |
| 5798025 | Apparatus for screening waste paper pulp Separation and discharge of contaminants and defibration of undefibered waste paper can be effected in a single apparatus which has a generally cylindrical casing, a rotor concentrically arranged in the casing and a cylindrical main screen plate concentri... | 08/25/1998 |
| 5622267 | Method and pressure screen for screening fibre suspension In a method and pressure screen for screening fiber suspension, fiber suspension is passed through two successive screening stages (A, B) provided in the same pressure screen so that accept from the first screening stage (A) is passed to the second screen... | 04/22/1997 |
| 5557386 | Toner recovering device for electrophotographic apparatus and toner recovering filter for said toner recovering device A toner recovering device for an electrophotographic apparatus, which includes: a dust collector connected to a device for cleaning untransferred toner remaining on a photosensitive body; a toner recovering filter having an inlet port for introducing an a... | 09/17/1996 |
| 5509539 | Method for preparing injection molding compound pellets to remove molding compound dust and broken pellets An injection molding compound pellet cleaner 10 removes broken pellets and eliminates excessive dust from molding compound pellets for preparation of the pellets for processing in an automatic molding machine. The pellet cleaner includes a vacuum chamber ... | 04/23/1996 |
| 5472095 | Screening cylinder Screening cylinders for screening lignocellulose-containing fibrous material are disclosed. The cylinders are formed from longitudinal bars separated by gaps, and support rings extending around the circumference of the cylinders to support the bars, as we... | 12/05/1995 |
| 5368169 | Screen construction A mesh screen comprising a pair of rings open at each end. A piece of mesh material is releasably clamped between the rings. The inner face of one cylindrical ring is provided with a circumferential groove and a circumferential flange projecting in the sa... | 11/29/1994 |
| 5277318 | Apparatus for removing contamination from low density particulate materials An apparatus is provided for the removal of oversized contaminants from particulate material the is particularly suitable for the removal of contaminants from low density, high surface area particulate materials. The removal of contaminants is accomplishe... | 01/11/1994 |
| 5201423 | Fiber suspensions sorter having a plurality of screen baskets The invention concerns a sorter with at least two screen baskets in a housing unit. The invention is characterized in that with screen basket diameters of at least 600 mm the at least two screen baskets are contained side by side, spaced, in an arrangemen... | 04/13/1993 |
| 5041212 | Efficiency screen plate for screening pulp An improved efficiency screen plate for screening pulp in a pressure screening apparatus is disclosed wherein various design parameters are established which increase screen performance, particularly in screening medium consistency pulp. The basket is for... | 08/20/1991 |
| 4995966 | Sifter-screening machine for bulk material A sifter-screening machine for loose material, especially flour, including an inlet for the material, downstream thereof a screen through which the material can be conveyed via an air stream, and downstream thereof an outlet for screened material. Dispose... | 02/26/1991 |
| 4965996 | Power plant for burning a fuel in a fluidized bed A power plant with a combustion chamber in which a fuel in burned in a fluidized bed of a particular material, comprises a storage container for the bed material which, upon a load reduction, is removed from the combustion chamber. The storage container i... | 10/30/1990 |
| 4857175 | Centrifugal debris catcher A debris catcher comprising a conical screen (filter) in a drill string which defines an annular accumulation space between the screen and the inner wall of the drill string is presented. The central portion of the screen is open to establish an unimpeded... | 08/15/1989 |
| 4830734 | Integrated process for the removal of sulfur compounds from fluid streams The present invention relates to a new and integrated process involving the utilization of a primary adsorption bed containing a regenerable, physical absorbent and an auxiliary sorption bed containing a chemisorbent and an optional physical absorbent for... | 05/16/1989 |
| 4810270 | Separator A separator for separating fibers from fines in a flow of gas includes an enclosed housing which includes a cylindrical upper section and a lower section. A screen basket is fixedly mounted in the housing, and this basket defines a screened cylindrical wa... | 03/07/1989 |
| 4699710 | Separator for particulates Apparatus for separating relatively large particles from dust particles, comprising an enclosed separating station for separating the large particles from the dust particles. The large particle and dust particle mixture is pneumatically conveyed from a su... | 10/13/1987 |
| 4563269 | Classifier A classifier for separating into particulate matter relatively coarse and fine particles. The classifier includes a casing, at least one cylindrical screen assembly mounted in the casing and extending substantially in the direction in which the particulat... | 01/07/1986 |
| 4561540 | Microscope drape A microscope drape fabricated from a very thin, transparent heat-resistant plastic film which is adapted to completely house an operating microscope including its support arms, is provided with an improved means for securing the tubular ocular housing ext... | 12/31/1985 |
| 4536284 | Classifier A classifier for separating particulate matter into relatively coarse and fine particles. The classifier includes a casing, at least one cylindrical screen assembly mounted in the casing and extending substantially in the direction in which the particulat... | 08/20/1985 |
| 4461702 | Classifier A classifier for separating particulate matter into relatively coarse and fine particles. The classifier includes a casing, at least one cylindrical screen assembly mounted in the casing and extending substantially in the direction in which the particulat... | 07/24/1984 |
