Patents Assigned to DUALLIFT GMBH
  • Patent number: 11492237
    Abstract: The invention relates to a continuous cable winch comprising a drive unit (20) and an output unit (60) for applying a drive force to a cable, which output unit is coupled to the drive unit (20). According to the invention, it is proposed that the drive unit (20) has a frequency converter (30) with a primary side (32) for drawing current from a power supply system (33) and a secondary side (36) for outputting an AC voltage (UU, UV, UW), an AC motor (40) for driving the continuous cable winch (10) at a variable rotation speed (?1), which AC motor is supplied with the AC voltage (UU, UV, UW) by the frequency converter (30), a control unit (50) which is interconnected with the frequency converter (30) and the AC motor (40) for the purpose of controlling the drive unit (20), wherein the control unit (50) is designed to change the rotation speed (?1) of the AC motor (40) by means of the frequency converter (30).
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: November 8, 2022
    Assignee: DUALLIFT GMBH
    Inventor: Frank Lülfing