Patents Assigned to Imo-Industri Aktiebolag
  • Hydraulic screw machine with balance plunger
    Patent number: 4242067
    Abstract: A hydraulic screw machine comprises a driving screw and at least one impeller screw with a balance plunger at its end. The thread of the impeller screw is complete with full depth all the way to the balance plunger. The length of the plunger is less than the width in the axial direction of the thread groove in the driving screw. The balance plunger is mounted on an axial pin on the end of the impeller screw.
    Type: Grant
    Filed: September 12, 1978
    Date of Patent: December 30, 1980
    Assignee: Imo-Industri Aktiebolag
    Inventor: Lars H. Segerstrom