Researchers have developed a mathematical framework to design knee-like joints in robots, called rolling ...

Consider the marvelous physics of the human knee. The largest hinge joint in the body, it has two rounded bones held together by ligaments that not only swing like a door, but also roll and glide over ...

A new series of rotating robotic joints ATI Industrial Automation, Apex, N.C. (www.ati-ia.com), uses a slip ring that lets electrical and pneumatic signals pass from robot to the end effector.

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