Generally speaking, the gear mechanism of automobiles and bicycles is usually to increase or decrease the rotation speed in one direction, but by using a special mechanism it is possible not only to ...

Rolling-ring drives are friction drives that convert the constant rotary motion of a plain shaft into a traversing action that moves an attached carriage. Used in positioning and reciprocating ...

The Telam CVT has both forward and reverse rotation as well as a geared neutral inherent in the design, making it what’s called an infinitely variable transmission (IVT). July 7, 2011 6 min read The ...