Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 6849851 | Method for controlling quality and condition on the basis of thermal imaging A method in the process of manufacturing and/or finishing a fiber web (11), in which method the Continuous and moving web (11), and/or a moving device (16, 17) related to the processing of the web (11), is monitored by one or more thermal... | 02/01/2005 |
| 6696685 | Device for detecting properties of a moving web of paper with an infrared light source A device for detecting properties of a moving web of paper, more specifically for production control in the paper making process, comprising an infrared lighting device suited for illuminating the web of paper with infrared light and a detector device for... | 02/24/2004 |
| 6504617 | Method and measuring arrangement for measuring paper surface The invention relates to a method and a measuring arrangement for determining gloss of paper or paperboard. The paper or paperboard surface is illuminated with collimated light substantially parallel with the normal of the paper or paperboard surface. An ... | 01/07/2003 |
| 6494081 | Method of measuring properties of paper, and arrangement in a paper measuring apparatus A measuring probe in a paper measuring apparatus is kept at a distance from the surface of the paper by feeding medium between the paper and a surface of the measuring probe through a feed hole in the surface of the measuring probe. The pressure of the su... | 12/17/2002 |
| 6495831 | Method and apparatus for measuring properties of paper The invention relates to a method and an apparatus for measuring the properties of paper from a moving paper web in a paper machine. An infrared beam is directed to the paper web. The infrared beam, passed through or reflected from the paper web, is split... | 12/17/2002 |
| 6481275 | Method and apparatus for measuring the tension of a moving web The invention relates to a method and apparatus for measuring the tension of a moving web. In the invention, a measuring beam (2)is curved so that a web moving over or under the measuring beam (2) forms an air cushion (3) of the air it transports between ... | 11/19/2002 |
| 6473670 | Method and apparatus for executing grade change in paper machine grade The invention relates to a method and an apparatus for executing a grade change in a paper machine, in which method a grade change is executed by determining, in advance, target ramps for different process variables, which are ramped according to said ram... | 10/29/2002 |
| 6449874 | Method for blowing steam against paper web, and steam box of paper machine A method for blowing steam against a paper web, whereby the steam is blown by a steam box having several profiling chambers in the cross direction of a paper machine. The cross-profile of the paper web is controlled by the steam supplied by the profiling ... | 09/17/2002 |
| 6440270 | Method and apparatus for controlling dryer section of paper machine In controlling the dryer section of a paper machine, the basis weight and moisture of the paper web, the energy fed into the drying cylinders of the dryer section and the machine speed are measured, and then the surface temperature of the drying cylinders... | 08/27/2002 |
| 6441904 | Method and apparatus for measuring properties of a moving fiber web The invention relates to a method and an apparatus for measuring properties of a moving web. Web properties are measured with a measuring apparatus where at least one sensor element is arranged to a rotating measuring roll. The measuring roll is in contac... | 08/27/2002 |
| 6421575 | Method and control arrangement for controlling sheet-making process The invention relates to a method and an arrangement for controlling a sheet-making process. In the solution, a sheet matching desired values is manufactured. A measuring unit measures the state of the process to produce one or more measurement value repr... | 07/16/2002 |
| 6412189 | Steam box of a paper machine A steam box in a paper machine, the steam box including a main steam zone and at least one side steam zone through which steam is blown to a paper web. The side steam zone is placed in a side section of the steam box and arranged to form a curtain in orde... | 07/02/2002 |
| 6408534 | Steam box A steam box includes a elongated steam-distribution chamber, regulator chambers set in a row next to the elongated steam-distribution chamber and covered on one side with a continuous perforated screen. Operating devices distribute the steam from the dist... | 06/25/2002 |
| 6380749 | Apparatus for measuring properties of a moving paper web or cardboard web The invention relates to an apparatus for measuring properties of a moving paper web or cardboard web. The apparatus comprises a sensor and a counterpart. The sensor comprises at least one coil. The sensor is arranged on a first side of the moving web and... | 04/30/2002 |
| 6366082 | Method and apparatus for determining properties of a moving web with a differential coil sensor The invention relates to a method and an apparatus for measuring properties of a moving web, a sensor (1) being arranged on a first side of the moving web (7), the sensor comprising a differential coil (3), which comprises at least two coils, and a refere... | 04/02/2002 |
| 6319362 | Method and equipment for controlling properties of paper The invention relates to a method and equipment for controlling properties of paper, which method comprises modelling the effect of the flow of retention agent (Fra) both on the amount of filler in the white water and on the paper ash content (... | 11/20/2001 |
| 6297882 | Method and apparatus for measuring paper color The invention relates to a method and apparatus for measuring paper color. Paper color is measured from the surface of a paper roll on a winder. As the size of the paper roll grows, a measuring device is moved in such a way that the angle between the meas... | 10/02/2001 |
| 6264793 | Method and apparatus for measuring caliper of paper The invention relates to a method and apparatus for measuring the caliper of paper substantially continuously during papermaking. A sensor (3a, 3b) is arranged above and/or under the paper (2), the sensor (3a, 3b) measuring the caliper of the paper (2) at... | 07/24/2001 |
| 6263291 | Method and apparatus for measuring color and/or composition The invention relates to a method and apparatus for determining the color and/or composition of a material. A sample of the material is illuminated with at least three illumination bands singly or in combination, said illumination bands collectively subst... | 07/17/2001 |
| 6262552 | Method of positioning an actuator The invention relates to a method for positioning an actuator. In the method, the actuator is controlled by a continuous control pulse (2a) toward a desired value (1), and the position of the actuator is measured. Further, a pulsing range limit located be... | 07/17/2001 |
