ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,747, issued on July 15, was assigned to Fisher Controls International LLC (Marshalltown, Iowa).
"Valve packing apparatus and related methods" was invented by Lucas Schmitt (Conrad, Iowa), Steven Hostetter (Colfax, Iowa), Aaron Anderson (Marshalltown, Iowa) and Lisa Miller (Marshalltown, Iowa).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods, apparatus, systems, and articles of manufacture of valve packing apparatus and related methods are described. An apparatus includes a cartridge including packing components and a spring. The cartridge is dimensioned to fit in a bore of a bonnet of a valve. A cap is coupled to the cartridge to retain the pac...