Patent ID: 7559813
Filing Date: 2009-07-14
Classification: B63H,F16H

Abstract:
1. A pod ship propulsion system, comprising: a housing pivotally connected to a ship hull; an electrical drive machine within the housing; at least one ship propeller outside the housing; and a hydrodynamic drive operably connecting the electrical drive machine to the propeller; said hydrodynamic drive comprising a first power branch and at least one second power branch, wherein the first power branch is operably connected at least indirectly with the electrical drive machine and the second power branch includes a hydrodynamic component that is connected at least indirectly with the first power branch, and further including an overdrive that brings together power flows from the first and second branches to thereby transfer power at least indirectly to the propeller; the electrical drive having a substantially constant speed and said hydrodynamic drive including a control element in the hydrodynamic component of the second power branch to vary the speed of the propeller.