A rotating rod, typically found in vehicles, transmits power from the engine or transmission to the differential, which then powers the wheels. A constant-velocity joint, often located at either end of this rod, allows for smooth power transfer even when the angle between the transmission and the wheels changes, such as during steering or suspension movement. This system is essential for front-wheel drive, all-wheel drive, and some rear-wheel drive vehicles.
This power transmission system is crucial for vehicle mobility and handling. Without it, efficient power delivery to the wheels, especially during turns and over uneven terrain, would be impossible. The development of these components was pivotal in the automotive industry, enabling the design of more compact and efficient vehicle layouts, particularly for front-wheel drive systems, which are now ubiquitous. This innovation contributed significantly to improved fuel efficiency and increased interior space in modern vehicles.