The proposed ratchet mechanism utilizes the asymmetry in surface wettability between the smooth and rough faces of the teeth of a geometrically symmetric gear to achieve ratcheting motion. The ratchet ...

A common ratchet from your garage may work wonders for tightening hard to reach bolts on whatever everyday projects around the house. However, those over at [Chronova Engineering] had a particularly ...

A ratchet tool lets you loosen or tighten a bolt without needing to lift and reposition the tool with every turn, which is how it differs from a standard wrench or socket. The mechanism allows the ...