Wheels {ratchet wheel}| can have angled teeth, typically with pawl engaged in tooth, pressed down by spring. Oscillations in both directions turn into intermittent angular motion in one direction. If spring and pawl have higher temperature than rotor, ratchet tends to go backwards. Perhaps, muscle contraction involves linear ratchet effect.
Practical Affairs>Machine>Kinds>Mechanical>Rotation
7-Machine-Kinds-Mechanical-Rotation
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0224