Patents by Inventor Valter E. Strom

Valter E. Strom 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).

  • Web tension measuring method and device
    Patent number: 4655093
    Abstract: Web tension measurement in that the web (5) is caused to oscillate transversely with the resonance frequency for the portion of the web (5) defined by a support (2,2a). The oscillations are measured by detectors (6,7) for determining the web tension. The measuring is carried out free of contact in that a thin air layer is maintained between the support (2,2a) and web (5).
    Type: Grant
    Filed: July 16, 1985
    Date of Patent: April 7, 1987
    Assignee: Svenska Traforskningsinstitutet
    Inventors: Valter E. Strom, Bo-Lennart I. Johansson, Hakan I. Karlsson, Thomas stman