ALEXANDRIA, Va., March 31 -- United States Patent no. 12,592,559, issued on March 31, was assigned to ROSEMOUNT INC. (Shakopee, Minn.).
"Field device current limiting" was invented by Yevgeny Yurevich Korolev (Maple Grove, Minn.), William Michael Mansfield (Niwot, Colo.) and Xiong Gao (Gothenburg, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A current limiting circuit for limiting a current through a pair of terminals powered from a 2-wire Advanced Physical Layer (APL) spur includes a current source, a first current limiter and a second current limiter. The current source is connected to one of the terminals and is configured to source a current that is conducted through the terminals and has an amp...