Patents by Inventor Olof Tyllered

Olof Tyllered 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 of monitoring transverse sealing in a packaging unit for continuously forming sealed packages containing pourable food products
    Patent number: 6732496
    Abstract: The method is aimed at indirectly determining the energy absorbed by a conducting layer (5) forming part of a strip of packaging material (1) to be sealed transversely. The method is based on measuring parameters correlated with the power supplied by a current source (45) to the packaging material (1) during sealing, and with the temperature of the conducting layer (5). The temperature measurement takes into account the temperature of the product to be packed, the characteristics of the packaging material, and the characteristics of the mechanical sealing members; correct cutting of the packaging material after sealing is also determined; and the parameters are monitored by measuring associated quantities and by comparison with permissible values.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: May 11, 2004
    Assignee: Tetra Laval Holdings & Finance SA
    Inventors: Bo Wessman, Olof Tyllered, Antonio Melandri