Patents by Inventor Heribert Quantschnigg

Heribert Quantschnigg 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).

  • Device for determining the condition of railway switches or railway crossings
    Patent number: 4986498
    Abstract: A device for determining the condition of railway switches or railway crossings by monitoring the end position of tongue rails (2), said device having a sensor (18) within the area of the theoretical frog point (17) of a frog (8), said sensor giving on occasion of a mechanical collision with the wheel flange or with the running surface of the wheel a signal indicating premature wear within the area of the frog.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: January 22, 1991
    Assignee: Voest-Alpine Maschinenbau Gesellschaft m.b.H.
    Inventors: Franz Rotter, Wolfgang Nayer, Heribert Quantschnigg, Erich Sattler