| Patent Number |
Title Of Patent |
Date Issued |
| 5709777 |
Device and method for the non-clogging throttling of a fluid stream of suspended matter |
January 20, 1998 |
| The invention relates to a valve or throttling device for a fluid flow, and particularly a flow containing solids, like a flow of pulp suspension. The valve has the following features: A hollow body of substantially rotational symmetry, which is traversed by liquid; the hollow body has a |
| 5694961 |
Device and method for changing the flow resistance of a fluid flow control device |
December 9, 1997 |
| An apparatus and method for variably controlling fluid flow in a closed flow line, especially the flow of a pulp suspension through a headbox of a paper-making machine, includes guiding fluid through a cavity of a conduit having at least two different cross-sectional profiles. Fluid flow |
| 5639352 |
Headbox lamellae and method for reducing turbulence thereabout |
June 17, 1997 |
| A method and apparatus for reducing turbulence in a pulp flow stream flowing through a paper making machine headbox includes providing lamellae disposed in a portion of the headbox. A lamella end portion is modified which provides for the flushing of a dead space formed in the wake of th |
| 5622603 |
Influencing the jet velocity in the multilayer headbox |
April 22, 1997 |
| The invention concerns a method of controlling the relative flow speed of the layers in a multi-layer headbox with laminae mounted torque-free between upper and lower lips which are stationary when in operation. The invention is characterized in that a difference in speed is produced |
| 5573642 |
Method and device for evening out the basic weight cross section by sectioning the screen circui |
November 12, 1996 |
| To regulate the basis weight cross section of the fiber suspension dispensed by the outlet of a headbox of a paper making machine onto the screen or screens of the following forming section, the headbox is sectioned across the width of the machine with individual first sections of fi |
| 5565063 |
Device and method for choking a stock suspension flow in a paper machine |
October 15, 1996 |
| A throttle device for stock suspensions in a paper machine including a feed line, a drain line and a spatially variable cavity connecting the feed line and drain line with each other. The cavities provided with a plurality of nestable walls in which the nesting effects a lengthening of |
| 5549792 |
Headbox for a paper machine |
August 27, 1996 |
| A headbox for a paper machine is characterized by having: at least one machine-wide channel region which defines a main direction of flow; a region for the production of turbulence; a plurality of feed lines distributed over the machine width and discharging into the headbox channel |
| 5527433 |
Device and method for choking a stock suspension flow in a paper machine |
June 18, 1996 |
| A throttle device for stock suspensions in a paper machine including a feed line, a drain line and a spatially variable cavity connecting the feed line and drain line with each other. The cavities provided with a plurality of nestable walls in which the nesting effects a lengthening of |
| 5466340 |
Paper machine headbox and method of controlling pulp material parameters |
November 14, 1995 |
| A paper machine headbox having divided sections for feeding pulp suspensions with different properties therethrough includes a single inlet line and a plurality of feed lines connected thereto. In at least one of the feed lines, there is a separation device which separates certain pulp |
| 5401363 |
Method of homogenizing the constitution of a web of paper |
March 28, 1995 |
| A method of manufacturing a web of fibers, especially a web of paper. The pulp is uniformly distributed through an outlet over the width of the machine and along a wire or between two wires. Most of the moisture is subsequently extracted from the pulp accommodated on or between the wires |
| 5316383 |
Mixing system for mixing two liquids at constant mixture volume flow for supplying the headbox o |
May 31, 1994 |
| The invention concerns a mixing system for mixing two liquids at the inlet to the headbox of a paper machine with: an inlet line (A) for the first partial volume flow (a); an inlet line (B) for the second partial volume flow (b); an outlet line (C) for the mixture volume flow (c) with th |
