ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,552, issued on Nov. 11, was assigned to Fisher Controls International LLC (Marshalltown, Iowa).
"Variable flow characteristic valves" was invented by Rich J. Anagnos (Conrad, Iowa).
According to the abstract* released by the U.S. Patent & Trademark Office: "Variable flow characteristic valves are disclosed. A disclosed example valve for controlling a flow characteristic therethrough includes a first plate having a first aperture pattern, a second plate proximate the first plate, the second plate having a second aperture pattern, and a rotator to rotate the second plate relative to the first plate to vary a degree of alignment between the first and second aperture patterns."
The ...