While the ball bearing might be among Leonardo Da Vinci's less celebrated inventions, it's arguably one of his most important. Though it was initially designed as part of his failed helicopter ...

If the utility of an invention were somehow derived from the genius of its inventor, it would be pardonable that so many sources trace the idea for the ball bearing to a 1497 drawing by Leonardo da ...

FAG Aeropace's new ball bearing needs minimal oil-cooling quantities to achieve up to 70% faster speeds than regular aircraft-engine bearings. A new ball bearing exceeds performance limits for ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This is Aetna’s A-893-1 ball thrust ...

For centuries, the conventional lead screw (threaded shaft and nut) was the primary mechanism for converting rotary motion to linear motion. They were inexpensive to manufacture and reliable. Ball ...