Patents by Inventor Friedbert Rohner

Friedbert Rohner 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).

  • Belt drive for a winding machine and a pulley for generating a periodically changing drive speed
    Patent number: 4283180
    Abstract: The pulley automatically changes drive speed by having a V-belt engaged at different diameters on the pulley discs. One disc is fixed to the shaft while the other disc is freely rotatable and axially slidable on the shaft. The discs have different cone angles to cause the V-belt to engage the cone surfaces at different diameters so as to cause the movable disc to rotate at a different speed from the fixed disc. A cone means is provided to reciprocate the movable disc during rotation under the bias of the V-belt.
    Type: Grant
    Filed: May 15, 1979
    Date of Patent: August 11, 1981
    Inventor: Friedbert Rohner