Variable stiffness magnetic spring
US11879516B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 18, 2020 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Nov 26, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F2228/066
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
This disclosure presents a new type of variable stiffness magnetic spring, which can have a highly linear translational force characteristic. The variable stiffness is achieved through the rotation of a central magnet. Both positive and negative spring constants can be created. Using an analytic-based field analysis modelling technique, the operating principle and linearity characteristics of the adjustable magnetic spring are studied. The use of a magnetic spring with an adjustable negative spring constant could enable an ocean generator to continuously operate in a resonant state, thereby greatly increasing its power generation capability. The described variable stiffness spring could also be useful in other energy harvesting applications, robotic actuator applications, and/or other applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.