ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,412, issued on Jan. 13, was assigned to Stiebel Eltron GmbH & Co.KG (Holzminden, Germany).
"Method of defrosting a heat pump device as well as a heat pump device" was invented by Hubert Nolte (Hoxter, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method of defrosting a heat pump device including a water tank, a heat exchanger, an electrical heating element, an evaporator, a fan for the evaporator, and a control unit. In a first operating mode, the heat pump device is controlled to heat water inside the water tank. In a second operating mode, the electrical heating element is manually activated to additionally heat the water ins...