With that in mind, [Alex] built a mechanical diode that will only allow gear rotation in one direction to be transmitted through the system. But wait, by connecting two of these devices together ...

A new approach to gear skiving, a specialized machining technique for producing internal gears, could improve the speed and accuracy with which gear teeth are formed. The work, described in the ...

As one gear turns, the other gear must also turn. Where the gears meet, the teeth must both move in the same direction. In the diagram, the teeth of both gears move upwards. This means that the ...