Patents by Inventor Kjell Ingvarsson

Kjell Ingvarsson 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).

  • Patent number: 8814076
    Abstract: A roll arrangement for determining a web tension profile of a web. The roll arrangement includes a roll having a peripheral surface for guiding the web, which peripheral surface is provided with a plurality of openings, and a plurality of sensor arrangements. Each of the plurality of openings are arranged to receive one sensor arrangement of the plurality of sensor arrangements to thereby sense forces applied by the web to the roll. The roll arrangement is adapted to suspend the sensor arrangements in the respective opening.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: August 26, 2014
    Assignee: ABB AB
    Inventors: Kjell Ingvarsson, Ulf A. Lifvenborg, Lars Jonsson, Jesper Kiersgaard, Kenneth Grefve, Joar Johansson
  • Publication number: 20130233959
    Abstract: A roll arrangement for determining a web tension profile of a web. The roll arrangement includes a roll having a peripheral surface for guiding the web, which peripheral surface is provided with a plurality of openings, and a plurality of sensor arrangements. Each of the plurality of openings are arranged to receive one sensor arrangement of the plurality of sensor arrangements to thereby sense forces applied by the web to the roll. The roll arrangement is adapted to suspend the sensor arrangements in the respective opening.
    Type: Application
    Filed: April 26, 2013
    Publication date: September 12, 2013
    Inventors: Kjell Ingvarsson, Ulf A. Lifvenborg, Lars Jonsson, Jesper Kiersgaard, Kenneth Grefve, Joar Johansson
  • Patent number: 6508115
    Abstract: A transfer roll 1 for conveying a strip of substantially flat material from one device to another. The strip passes over the transfer roll as the transfer roll rotates. The transfer roll includes a flat and smooth cylindrical outer skin which comprises at least two cylindrical elements. Between the cylindrical elements is arranged a mean 7 for reducing the mechanical stiffness of the cylindrical skin relative to the stiffness of the remainder of the cylindrical skin 2. Suitable means such as a welded joint 9 of reduced cross sectional thickness compared to the remainder of the cylinder are described. Such means separate the cylinder mechanically into a plurality of measurement areas with a predetermined degree of crosstalk. The transfer roll may be used to measure force or tension in strip material more accurately than with previous devices.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: January 21, 2003
    Assignee: ABB-AB
    Inventors: Kjell Ingvarsson, Dan Johansson, Ulf Olsson, Pär Gustafsson
  • Publication number: 20020005067
    Abstract: A transfer roll 1 for conveying a strip of substantially flat material from one device to another. The strip passes over the transfer roll as the transfer roll rotates. The transfer roll includes a flat and smooth cylindrical outer skin which comprises at least two cylindrical elements. Between the cylindrical elements is arranged a means 7 for reducing the mechanical stiffness of the cylindrical skin relative to the stiffness-of the remainder of the cylindrical skin 2. Suitable means such as a welded joint 9 of reduced cross sectional thickness compared to the remainder of the cylinder are described. Such means separate the cylinder mechanically into a plurality of measurement areas with a predetermined degree of crosstalk. The transfer roll may be used to measure force or tension in strip material more accurately than with previous devices.
    Type: Application
    Filed: June 15, 2001
    Publication date: January 17, 2002
    Inventors: Kjell Ingvarsson, Dan Johansson, Ulf Olsson, Par Gustafsson