Patents Assigned to Fredenhagen AG
  • Electric overhead trolley system with auxiliary rail and driven auxiliary wheel for traction
    Patent number: 5092249
    Abstract: The invention proposes an electric overhead trolley system in which a travelling gear (14) is provided with a motor-driven driving wheel (16) and at least one auxiliary wheel (30) interacting with an auxiliary track (28), at least in certain sections, which auxiliary wheel contributes in transmitting the drive force to a track (10) so that ascending and decending track portions can be run through with less problems.
    Type: Grant
    Filed: July 12, 1991
    Date of Patent: March 3, 1992
    Assignee: Fredenhagen AG
    Inventor: Werner Knuettel