These systems often utilize complex gear mechanisms, particularly planetary gear trains (PGTs), which are known for their ability to provide multiple gear ratios in a compact design. Recent ...

Let’s take a look at some of the simple mechanisms that they use. Pulleys and gears.When a flag is raised, it will often be lifted using a pulley mechanism. A pulley is a wheel on a fixed axle.

Pope Francis is being treated for a “polymicrobial infection.” Doctors say it is caused by multiple pathogens, including ...

There are no motors, either. The gears are centrally connected to nested brass tubing and the mechanism is actuated with a hand crank. The six pages of forum discussion are worth combing through ...

Every product is carefully selected by our editors. If you buy from a link, we may earn a commission. Learn more Some EDC knife mechanisms are so classic and time-tested that nobody seems to give them ...