ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,383, issued on Oct. 14, was assigned to DANFOSS POWER SOLUTIONS INC. (Ames, Iowa).
"Fan drive system" was invented by Elias Nielsen (Nordborg, Denmark).
According to the abstract* released by the U.S. Patent & Trademark Office: "The fan system includes a fan operated by a hydraulic motor which is driven by a hydraulic variable displacement pump that includes a displacement volume adjusting element. A tilt angle of the displacement volume adjusting element can be adjusted by controlling a tilt current supplied to an electronic displacement control unit. The hydraulic fan system further includes means for determining the volumetric flow rate of the pump and a control unit having: a...