US Patent Issued to SIEMENS SCHWEIZ on Nov. 3 for "Method and device for measuring valve characteristic parameters" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,875, issued on Nov. 3, was assigned to SIEMENS SCHWEIZ AG (Zurich).

"Method and device for measuring valve characteristic parameters" was invented by Zhi Min Chen (Beijing), Shun Jie Fan (Beijing), Bin Zhang (Beijing) and Cheng Pan (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "Various embodiments of the teachings herein include a method for measuring valve characteristic parameters of a valve actuator. An example method includes: resetting the push rod to a top end position; driving the push rod; measuring the DC drive current in real time; recording a first position of the push rod at the start of a first abrupt change in the DC drive curr...