ALEXANDRIA, Va., July 30 -- United States Patent no. 12,372,132, issued on July 29, was assigned to Portland State University (Portland, Ore.).
"Rotary and linear adjustable stiffness magnetic springs" was invented by Jonathan Bird (Portland, Ore.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Various examples of a variable stiffness magnetic spring with a linear stroke length are provided. The stiffness of the magnetic springs is varied through rotation of one or more magnets, and both positive and negative spring constants are achievable. In one example, a variable stiffness magnetic spring includes a first magnetic component and a second magnetic component, wherein the first magnetic component is coaxial ...