Patents by Inventor Per-Ola Lidar

Per-Ola Lidar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Composite press felt
    Patent number: 7871672
    Abstract: There is provided an industrial fabric comprising a layer of batt of fibres optionally needled to a base cloth, whereby during manufacture of the fabric a dispersion of particulate, polymeric material has been applied to the layer of batt of fibres and thermally activated to provide a discontinuous layer containing a mixture of batt fibres and a polymer-baft fibre matrix.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: January 18, 2011
    Assignee: Voith Patent GmbH
    Inventors: Robert L. Crook, Senjay Patel, William Daniel Aldrich, Per Ola Lidar
  • Paper machine belt
    Patent number: 7674356
    Abstract: A paper machine belt that includes at least one layer having parallel yarns. Additionally, a ratio of a volume of the parallel yarns in the at least one layer to a void volume in the at least layer is greater than 1:1.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: March 9, 2010
    Assignee: Voith Fabrics Patent GmbH
    Inventors: Kjell Anders Karlsson, Vaeinoe Per-Ola Lidar
  • Papermachine clothing
    Patent number: 6531418
    Abstract: Papermachine clothing comprises a base cloth consisting of a layer of woven fabric and/or a layer of thermoplastics material in mesh form. A batt fiber layer containing a non woven array of yarns extending in the intended machine direction of the papermachine clothing.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: March 11, 2003
    Assignee: Voith Fabrics Heidenheim GmbH & Co. KG
    Inventors: Per-Ola Lidar, Goran Nohlgren, Jorgen Johansson
  • Apparatus and method for cleaning papermachine clothing
    Patent number: 5900117
    Abstract: A papermachine clothing cleaning apparatus has a fluid injection nozzle with an apertured plate (14). The injection nozzle directs fluid onto the papermachine clothing (11) in order to clean the clothing. The areas of papermachine clothing that are adjacent the areas of clothing being impacted by the fluid are located in a press formed by the apertured plate (14) and a body (15) provided at the opposite surface of the fabric (11).
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: May 4, 1999
    Assignee: Scapa Group PLC
    Inventor: Per-Ola Lidar
  • Seam for fabrics
    Patent number: 5405669
    Abstract: Joints for industrial fabrics are made such that the end edge of each part of the fabric is formed with projecting loops (5), which are formed by bending the warp threads of each part backwards, the return parts of these threads being woven into the fabric for a given length. The loops of one part are inserted between the loops in the opposite part for being fixed in this position. It is desirable that all warp threads in the fabric can coact in the joint, even if their collective width is greater than 100% of the fabric width. The individual loops (5) along at least some portion of the end edges (3, 4) of the parts (1, 2) are therefore formed from at least two juxtaposed threads (7, 8; 11, 12) crossing each other at least once (at 9) before the point of return into the fabric.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: April 11, 1995
    Assignee: Scandiafelt AB
    Inventor: Per-Ola Lidar