Patents Assigned to DF Podem
  • Electric hoist including a planetary reduction gear housing disposed within a hoist drum
    Patent number: 5184807
    Abstract: An electric hoist which includes a drum mounted in a carrying frame, and an electric motor mounted on one end face of the carrying frame, and connected kinematically to a planetary reduction gear, whose housing is disposed totally inside the drum. The housing is connected to the drum by a gear diaphragm and a gear ring. The carrying frame is connected by a connecting shaft and spline joints to the output shaft of a stem, and the gear ring is shaped as an integral part of the drum.
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: February 9, 1993
    Assignee: DF Podem
    Inventors: Nikolay N. Nikolov, Nikolay T. Tzanev, Pavlin S. Pavlov