ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,492, issued on Sept. 22, was assigned to Voith Patent GmbH (Heidenheim, Germany).
"Hydrodynamic-mechanical power transmission device" was invented by Bernhard Ludas (Aalen, Germany) and Hartmut Graf (Urbach, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydrodynamic-mechanical power transmission device includes: an input shaft; an output shaft; a basic transmission configuration including a hydrodynamic converter and a superimposition transmission, the hydrodynamic converter including a pump impeller and a turbine wheel, the superimposition transmission being formed as a planetary transmission including a ring gear, a first sun gear, and...