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US 12,372,132 B2Granted
Rotary and linear adjustable stiffness magnetic springs
AssigneePortland State University
InventorJonathan Bird
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AssigneePortland State University
InventorJonathan Bird
Estimating the term…
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 with the second magnetic component, the first magnetic component is rotatable about an axis and relative to the second magnetic component to adjust a stiffness of the variable stiffness magnetic spring, and the second magnetic component is translatable along the axis and relative to the first magnetic component. While such variable stiffness magnetic springs exhibit highly linear stroke lengths, such variable stiffness magnetic springs can be positioned in series to achieve an even longer linear stroke length.
A variable stiffness magnetic spring, comprising:
A system, comprising:
A method of adjusting a stiffness of a magnetic spring, comprising:
Dependencies are inferred from the claim text.