A ratcheting wrench, is a type of wrench that employs a ratchet mechanism to block movement in one direction while allowing constant rotation in another. The mechanism, consisting of a pawl and a gear ...

Scientists have proposed and experimentally demonstrated a ratchet concept to control the spin motion. In analogy to a ratchet wrench, which provides uniform rotation from oscillatory motion, such ...

In a common type of mechanical ratchet, back and forth motion provided by a human arm gets converted to rotating motion that acts to tighten a screw or bolt. The role of the ratchet is to convert a ...