| Patent Number |
Title Of Patent |
Date Issued |
| RE37973 |
Process and device for surface treatment of strips with liquids |
February 4, 2003 |
| A device for surface treatment of continuously moving strip, particularly for pickling rolled metal strip, includes a trough-shaped tank containing a treating liquid bath. The trough includes a panel mounted therein and submerged in the liquid, and aligned approximately parallel to the s |
| 7384512 |
Device for stabilizing a paper web |
June 10, 2008 |
| The invention relates to a device for stabilizing a paper web, particularly a tissue web, with at least one (web) stabilizer (3, 7) after a drying cylinder (1), where the stabilizer (3) is located directly at the cylinder (1) under the paper web (2). It is mainly characterized by the |
| 7384511 |
Device for changing the cloth of a paper machine |
June 10, 2008 |
| The invention relates to a device for changing the cloth of a paper machine, particularly a tissue machine, for example a TAD (through-air drying) machine, with a number of deflection rolls (3), (4), (5), (6) and at least one cleaning device (27), (28), (29) for the machine cloth. Le |
| 7363725 |
Device for drying paper webs, especially tissue paper webs |
April 29, 2008 |
| The invention relates to a device for drying paper webs, especially tissue paper webs, with a dryer cylinder 1 and a dryer hood 2, 3 for blowing hot air onto the paper web. It is mainly characterised by the inlet air parts of the dryer hood 2, 3, such as the nozzle basket 9 or the inlet |
| 7357847 |
Device for drying a paper web |
April 15, 2008 |
| A device for drying a paper web includes a structured fabric for carrying the paper web rests during the drying process. A single roll unit includes a suction roll for dewatering the paper web and a press roll for securing the paper web to the structured fabric. The paper web is dried |
| 7347140 |
Screw press for separation of liquid from solid-liquid mixtures especially pulp suspensions |
March 25, 2008 |
| Screw press for separation of liquid from solid liquid mixtures, especially pulp suspensions, with a casing with perforations for liquid and a screw shaft provided in it between which a circular gap is formed through which the solid liquid mixture is pressed. Furthermore, a counter p |
| 7314538 |
Process and device for discharging lignocellulose raw materials from a digester and conveying th |
January 1, 2008 |
| A process for refining lignocellulose raw materials, especially wood chips, saw dust, annual plants or wood waste, includes dewatering the lignocellulose raw materials discharged from a digester, extracting condensate produced during dewatering, and refining the dewatered lignocellul |
| 7296684 |
Screen for cleaning a fiber suspension |
November 20, 2007 |
| 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 also includes one |
| 7296682 |
Process for controlling operation of a flotation cell |
November 20, 2007 |
| A method for controlling operation of a flotation cell, where the liquid level and the foam level in the cell are measured and controlled. The method includes measuring at least one quality characteristic of the accept leaving the cell and determining the set value(s) for the liquid |
| 7267231 |
Process and device for aerating suspensions |
September 11, 2007 |
| A process for aerating suspensions, particularly to flotate them, for example in deinking of pulp suspensions, with one or more stages and/or cells. Each stage/cell has its own separate liquid loop. A cleaner is interposed to improve removal of dirt specks. |
| 7261208 |
Method and installation for drying sludge |
August 28, 2007 |
| Apparatus and method for drying sludge, in particular sewage sludge, by creating a granulate from the dried product. A mixture of a carrier material consisting of recycled sludge which has already been dried and liquid sludge is fed to a dryer 6. The dried product is fed to a solids |
| 7163622 |
Filter |
January 16, 2007 |
| The invention refers to a filter 1 with several rotating filter discs 3 mounted on a shaft 2 and which are provided with a porous filter medium. It is characterized by elastomer elements (8, 8') being mounted on the shaft (2) as spacers between the individual filter discs (3). In add |
| 7125491 |
Screen and process for manufacturing a screen of this kind |
October 24, 2006 |
| A flat or cylindrical screen includes rods and rod-bearing supporting elements. The rods have protrusions in the side walls which are received into inversely shaped recesses in a supporting element. The screen is manufactured by bending the supporting elements open elastically and in |
| 7090746 |
Process and device for removing water from a mechanical pulp, chemical pulp or paper sheet |
August 15, 2006 |
| A process and apparatus for removing water from a mechanical pulp, chemical pulp or paper sheet, carried between top and bottom wires running through a dewatering machine having a first dewatering zone. The apparatus includes at least one suction box positioned downstream of the firs |
| 7060163 |
Device for continuous drying of a pulp sheet |
June 13, 2006 |
| The invention relates to a device for continuous drying of a pulp sheet 10, particularly a tissue web, with a drying drum 1 and an air circulating system. It is mainly characterised by the drying drum 1 having a shell 12 with a perforated cylinder 20 that is externally supported by r |
| 7005037 |
Device for detaching a paper web from a wire |
February 28, 2006 |
| The invention relates to a device for detaching a paper web 9 from a wire 4, where the pulp suspension is fed in between a wire 4 and a felt 5 by a headbox 2, the wire 4 and felt 5 are guided together over a forming roll 3, and are separated from one another after the web 9 has formed. I |
| 6998056 |
Process and device for aerating a liquid with gas |
February 14, 2006 |
| Apparatus and process for aerating a liquid with gas, the apparatus comprising a pressure vessel including a lower section containing the liquid and an upper section containing a volume of the gas. A pressure connection in the upper section of the pressure vessel adapted receives the |
| 6946105 |
Process and apparatus for the recovery of metal oxide particles |
September 20, 2005 |
| A process for the recovery of metal oxides from a solution containing metallic salts by spray roasting of these solutions. The process is particularly suitable for spray roasting spent pickling acids. The process feeds the solution to a reactor for spray roasting of the droplets in at |
| 6923400 |
Process and device for continuous reeling of a pulp sheet |
August 2, 2005 |
| A process for continuous reeling of a pulp sheet, particularly a paper sheet, where the sheet runs over a reel drum and is later wound on a winding unit. The pressing force in the nip between the horizontal reel and the reel drum being measured without any losses during the entire wi |
| 6921443 |
Process for producing stainless steel with improved surface properties |
July 26, 2005 |
| A process for treating a stainless steel strip in an electrolytic tank produces a stainless steel with improved surface properties. The process subjects the stainless steel to a bright annealing process, followed by an electro-chemical treatment stage at current densities of up to 200 |
| 6920983 |
Device for separating solids from liquids by means of flotation |
July 26, 2005 |
| The invention relates to a device for separating solids from liquids by means of flotation, particularly for separating impurities and ink particles from fibre suspensions, with several injectors 10, which are provided inside a flotation cell 1. It is mainly characterised by the inje |
| 6881297 |
Process for aerating dispersions |
April 19, 2005 |
| A device and process for aerating dispersions, particularly for flotation of pulp suspensions, in a de-inking process where the pulp suspension containing dirt particles is sprayed into a tank together with air. The air is injected at a minimum of two successive points and mixed with the |
| 6846418 |
Process for treating acidic and metallic waste water |
January 25, 2005 |
| A process for treating acidic and metallic waste water, particularly the rinsing water and/or used acids from pickling plants. The process includes the step of adding an alkaline solution or gas to bind the free acids in the waste water, followed by separation of the waste water into a f |
| 6835283 |
Process and device for measuring and controlling the nip pressure in the press of a paper machin |
December 28, 2004 |
| The invention relates to a process for measuring and controlling the nip pressure in the press of a paper machine, particularly in a shoe press, across and/or along the web running direction. It is largely characterized by the hydraulic, static pressure being measured at reference points |
| 6821390 |
Process and device to control quality parameters in paper, tissue and pulp dewatering plants |
November 23, 2004 |
| Apparatus and process for controlling the basis weight cross-profile, the formation, the fiber direction and other quality parameters of a pulp sheet after the headbox in a dewatering plant. The apparatus including at least one suspension feed, at least one distribution device and at lea |
| 6808634 |
Method and device for cross-flow filtration |
October 26, 2004 |
| The invention relates to a process for cross-flow filtration with membranes. It is mainly characterized by the membranes being moved relative to each other. The invention also relates to a device for carrying out the process, where at least two hollow membrane discs are provided, whi |
| 6797240 |
Process and apparatus for the extraction and regeneration of acids from spent acids |
September 28, 2004 |
| Process and apparatus for regenerating spent acid liquor includes a primary roasting furnace for evaporating a substantial portion of the liquid from the spent acid to produce acid vapors and partially roasted metal salts. The partially roasted metal salts are transferred to a secondary |
| 6792850 |
Screw press |
September 21, 2004 |
| The invention relates to a screw press for separating liquids from solid-liquid mixtures, especially pulp suspensions, which has a casing provided with liquid passages, especially divided into segments, a screw rotating inside the casing, a shaft, preferably hollow, and a suspension |
| 6730232 |
Process and device for separating impurities from a suspension by flotation |
May 4, 2004 |
| Apparatus and a process for separating impurities from a suspension in a flotation cell, including an aeration device for aerating a liquid with a gas until the liquid is saturated. An expansion device expands the liquid saturated with gas to form gas bubbles in the liquid. An addition d |
| 6705561 |
Process and device for continuous reeling of a pulp sheet |
March 16, 2004 |
| A process for continuous reeling of a pulp sheet, particularly a paper sheet, where the sheet runs over a reel drum and is later wound on a winding unit. The pressing force in the nip between the horizontal reel and the reel drum is measured without any losses. |
| 6669819 |
Device for continuous reeling of a pulp sheet |
December 30, 2003 |
| A device for continuous reeling of a pulp sheet, particularly a paper sheet, where the sheet runs over a reel drum and is later wound on a horizontal reel with a horizontally adjustable holding device. The horizontally adjustable holding device having support rollers that run in guid |
| 6669025 |
Screen |
December 30, 2003 |
| A screen for cleaning a pulp suspension including an additional screen basket in the infeed area for pre-screening. |
| 6637686 |
Refiner |
October 28, 2003 |
| A refiner including a rotor and a stator defining a cylindrical or conical refining gap therebetween. A pulp feed channel extends in a radial direction from an inlet pipe to the refining gap. |
| 6631809 |
Screen for cleaning a pulp suspension |
October 14, 2003 |
| A screen for cleaning a pulp suspension includes a stationary installation in the infeed area between the infeed branch and the free end of the rotor. |
| 6616810 |
Device for removing water from a fibrous material strip |
September 9, 2003 |
| A device for dewatering a pulp web having a dewatering section comprising top and bottom wires forming a wedge-shaped dewatering zone which can be adjusted and/or pressure-loaded at the downstream end, and with a pair of press rolls mounted at the end of the bottom wire. The top roll of |
| 6609530 |
Process and apparatus for treating a continuous strip material |
August 26, 2003 |
| A rinsing process and apparatus for rinsing a continuous steel strip material includes a rinse tank positioned above a collection chamber for defining a rinsing station. The rinse tank includes spray nozzles for spraying rinse liquid onto the upper and lower surfaces of the advancing |
| 6588599 |
Screen for pulp processing |
July 8, 2003 |
| A screen, for screening material used in the production of paper, board and the like, having a screen basket and a rotor supporting several blades which can be moved along the wall of the screen basket when the rotor rotates. The blades having a convex curvature on the side facing the |
| 6585854 |
Device for aerating dispersions |
July 1, 2003 |
| A device and process for aerating dispersions, particularly for flotation of pulp suspensions, in a de-inking process where the pulp suspension containing dirt particles is sprayed into a tank together with air. The air is injected at a minimum of two successive points and mixed with the |
| 6565027 |
Refiner |
May 20, 2003 |
| A refiner for shredding pulps having refining surfaces provided on a rotor and a stator and which form a cylindrical or a conical refining gap. The refining gap is set by wedges which are mounted on the stator and rotor and can be moved against each other. |
| 6499603 |
Screen for cleaning pulp suspensions |
December 31, 2002 |
| A screen for cleaning a pulp suspension including a cylindrical screen basket and a double-conical accept chamber which widens in the flow direction of the pulp suspension. |
| 6493076 |
Method and arrangement for measuring wood |
December 10, 2002 |
| The invention relates to a method and arrangement for measuring the quality of wood. The wood comprises not only a pure body but also components of bark and knots, having optical properties different from those of the pure body. Barked trees (308) are turned into wood powder (322). The w |
| 6475337 |
Process for aerating dispersions |
November 5, 2002 |
| A device and process for aerating dispersions, particularly for flotation of pulp suspensions, in a de-inking process. The process includes at least two stages, where each stage has a separate liquid circulating system which sucks in the gas or air and mixes it with the liquid. The devic |
| 6457204 |
Device for dust removal from a moving paper web |
October 1, 2002 |
| A device for removing dust from a moving paper web, where the dust is carried in a boundary layer of air that runs with the web, includes a first separating box mounted across the web running direction. The first separating box has a collecting duct extending across the web running d |
