D. Braun, S. Kim, Variable Stiffness Mechanisms for low Energy Cost Stiffness Modulation, US Patent Application 17/506,164, 2021.
Disclosed herein is a variable-stiffness floating spring mechanism. The variable-stiffness floating spring mechanism can change its stiffness without changing an energy stored by a spring. The variable-stiffness floating spring mechanism can amplify an output of a human user. The variable-stiffness floating spring mechanism can enable augmentation of physical performance beyond the physical capabilities of the human user.