ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,435,814, issued on Oct. 7, was assigned to Samson AG (Frankfurt, Germany).
"Spring fracture detection in a preloaded actuator of a control valve" was invented by David Wagner-Sturz (Muhltal, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for detecting a spring breakage in a preloaded drive of a control valve. The method is based on the fact that the pressure which must be applied to achieve a certain valve member position falls significantly after the breakage or failure of the spring. The breakage of a spring in a preloaded drive can thus be detected reliably using the sensor system already present in the contro...