Patents by Inventor Stig E. A. Stigsson

Stig E. A. Stigsson 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).

  • Driving device for driving or operating elongate display members at signs for consecutive, repeated presentation of series of images
    Patent number: 5161421
    Abstract: The present invention relates to a driving device for driving or operating elongate display members at signs for consecutive, repeated presentation of series of images, whereby said elongate display members (2) are driven through pairs of gear wheels (15, 16) having conical teeth and whereby a driving gear wheel (15) in each pair of gear wheels is provided on a drive shaft (6) and a driven gear (16) wheel in each pair is operatively connected with the elongate display member (2) to be driven.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: November 10, 1992
    Assignee: Prisma Skyltreklam AB
    Inventor: Stig E. A. Stigsson