ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,322, issued on June 24, was assigned to HAMILTON SUNDSTRAND Corp. (Charlotte, N.C.).
"Three phase frequency sensor with open/short immunity" was invented by Christopher Blazer (Machesney Park, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A frequency sensor system for a three-phase generator includes a first stage that receives all three phases of the three-phase generator and generates three scaled difference signals from them. The system also includes a summing and filtering stage, the summing and filtering stage combining the three scaled difference signals to form a single combined signal and the filtering the single combined signal with a...