Moving Guard Rail Patents (Class 246/422)
  • Patent number: 4168817
    Abstract: A rail switch in which two wing rails are engageable with a frog in alternation, characterized in that guide members are provided, which are held in position relative to the wing rails and extend under and are engageable with the frog or parts rigidly connected to the frog to prevent an upward movement of said guide members.
    Type: Grant
    Filed: December 2, 1977
    Date of Patent: September 25, 1979
    Assignee: Vereinigte Osterreichische Eisen- und Stahlwerke-Alpine Montan Aktiengesellschaft
    Inventors: Robert Pirker, Hannes Lindner