Patents by Inventor Andreas Wannebo

Andreas Wannebo 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).

  • Method and arrangement for ultrasonic welding
    Patent number: 5989370
    Abstract: The present invention relates to a method and apparatus for ultrasonic welding of material webs which move between at least one ultrasonic horn of an ultrasonic welding arrangement and an anvil holder having a determined pattern of anvils, so as to enable the webs to be welded at high web speeds. The weld width of each ultrasonic horn in the ultrasonic welding arrangement is determined in accordance with the intended highest travel speed of the webs.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: November 23, 1999
    Assignee: SCA Hygiene Products Aktiebolag
    Inventor: Andreas Wannebo
  • Method of controlling the power of a welding unit in ultrasonic welding operations and an arrangement for carrying out the method
    Patent number: 5749987
    Abstract: A method and device for controlling the power intake of a welding unit (1) with an ultrasonic horn (2) and an anvil holder (3) equipped with anvils (4). The mean distance of the ultrasonic horn (2) from the anvil (4) is controlled so that the power intake of the welding unit (1) will coincide with a predetermined control value.
    Type: Grant
    Filed: December 13, 1995
    Date of Patent: May 12, 1998
    Assignee: Molnlycke AB
    Inventor: Andreas Wannebo