ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,968, issued on Nov. 25, was assigned to KAESER KOMPRESSOREN SE (Colburg, Germany).
"Method for the contactless determination of an operating state" was invented by Florian Wagner (Neuffen, Germany), Tobias Sprugel (Coburg, Germany) and Patrick Jahn (Coburg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for the determination, in particular for contactless determination, of an operating state of a compressor (1) and/or a rotational speed of a compressor drive (2), in particular of a variable-speed or fixed-speed compressor drive (2), having the following method steps: detecting a magnetic field over a time ra...