With the new unit the contact pressure of the drive wheel is automatically set depending on the required drive force - both for driving and for braking. This boosts efficiency and enhances the service ...

The less work required to translate an object, the better. Avoiding sliding friction — a major sinkhole of applied force for motion — is accomplished through rolling. A: Ironically, with increased ...

As man voyages farther toward the stars, and faster across the face of his own earth, the instruments by which he steers become vastly more important. And on planes or ships or spacecraft, the heart ...