Rotary and linear adjustable stiffness magnetic springs
US12372132B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 2022 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Oct 21, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.