F16H 21/44, B25J 17/0208
A compliant crank slider with adjustable constant-force output. Constant-force mechanisms (CFM) are used to maintain a constant output reaction force throughout a large range of compressive motion. The invention improves on existing CFM by introducing a second degree of freedom that adjusts the mechanism's output without changing its kinematic structure. This second degree of freedom is the rotation of a compliant beam about its longitudinal axis as it is constrained to the initial plane of bending. The resulting change in the beam's stiffness allows for adjustment to a specifiable range of constant-force outputs.
Hasara, Steven Lawrence and Lusk, Craig Perry, "Load-adjustable constant-force mechanisms" (2019). USF Patents. 1109.
University of South Florida