He came upon a set of cockpit indicators from a Cold War-era RAF airplane — sorry, “aeroplane” — that used a magnetically driven rack and pinion to swivel a set of prism-shaped pieces to ...

DualDRIVE systems achieve a mechanical preload by torsionally winding one pinion against the other when both pinions are in ...

But while these systems rely on different sources of power, they often function using similar gears and components, including ...