US Patent Issued to Otis Elevator on April 14 for "Fault classification in elevator systems" (American, German Inventors)

ALEXANDRIA, Va., April 15 -- United States Patent no. 12,600,599, issued on April 14, was assigned to Otis Elevator Co. (Farmington, Conn.).

"Fault classification in elevator systems" was invented by Uwe Schonauer (Berlin) and Prasanna Nagarajan (Farmington, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An elevator system (2, 102) includes a drive system (10) including one or more drive components (11, 13) and drive hardware (15) for controlling the supply of power to the one or more drive components (11,13), a safety chain (16) arranged to break and thus interrupt a supply of power to the one or more drive components (11, 13) unless all of one or more safety condition(s) is satisfied; and a control d...