ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,511, issued on Feb. 17, was assigned to ZF Friedrichshafen AG (Friedrichshafen, Germany).
"Traction drive having a cooling system with two cooling circuits" was invented by Michael Trubenbach (Friedrichshafen, Germany) and Horst Leichsenring (Friedrichshafen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A traction drive for propelling a vehicle includes first and second drive components (1, 1*) that generate heat during operation. A cooling system for tempering the drive components (1, 1*, 2, 2*) has a first cooling circuit (3), a second cooling circuit (4), and a heat exchanger (5). The heat exchanger (5) is designed to transfer heat betw...