ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,895, issued on Oct. 28.
"Testing mechanical overspeed protection systems" was invented by Mohammad Durali (Tehran, Iran), Mohammad Hossein Heydari (Tehran, Iran), Amir Mahdi Soufi Enayati (Tehran, Iran) and Seyed Mahdi Hosseini (Tehran, Iran).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system for calibrating the trip speed of a mechanical overspeed sensing device by manipulating the compression of a spring of the overspeed sensing device. The system may include a rotatable annular mount, on which the mechanical overspeed sensing device is mounted and a trip sensor. The system may drive a rotational movement of the annular mount with a varying sp...