Patents Assigned to Hydraulik Nord GMBG
  • Variable-ratio hydraulic steering system
    Patent number: 5850888
    Abstract: The invention changes over to another steering ratio automatically and very safely on the transition from servo to emergency operation. In the steering system, only a few of the lines (13) link the metering pump (10) to one of the cylinder connections (7, 8) and in each of the other lines (13') there is a changeover unit (16) which also links the lines (13) to the cylinder connections (7, 8) or the delivery connection (6) depending on the method of operation. These steering systems are used in mobile systems, especially slow-moving vehicles.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: December 22, 1998
    Assignee: Hydraulik Nord GMBG
    Inventors: Erhard Bergmann, Manfred Schildmann, Gerhard Voss