ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,716,521, issued on Aug. 25, was assigned to Fisher Controls International LLC (Marshalltown, Iowa).
"Packing system of a valve assembly" was invented by Michel Ken Lovell (Marshalltown, Iowa) and Trenton F. Jackson (Marshalltown, Iowa).
According to the abstract* released by the U.S. Patent & Trademark Office: "A packing system is disclosed for use with a valve having a valve body that defines a flow passage therethrough. The packing system includes a bonnet configured for connection to the valve body, a stem bore extending through the bonnet to receive a stem of the valve that is movable within the stem bore to control flow through the flow passage, a first packing set arranged in t...