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Operation. The hub assembly is located between the brake drums or discs and the drive axle. A wheel is bolted on it. Depending on the construction, the end of the hub comes equipped with the splined teeth. They mate the teeth on the axle shaft. The axle hub spins along with the wheels bolted to it and provide power to the wheels in order to rotate.
In 1955, Delta Air Lines pioneered the hub-and-spoke system at its hub in Atlanta, Georgia, [3] in an effort to compete with Eastern Air Lines. In the mid-1970s FedEx adopted the hub-and-spoke model for overnight package delivery. After the airline industry was deregulated in 1978, several other airlines adopted Delta's hub-and-spoke paradigm.
A wheel hub motor, hub motor, or in-wheel motor is a motor that is incorporated into the hub of the wheel. Wheel-hub motors are commonly found on electric bicycles. Electric hub motors were well-received in early electric cars, but have not been commercially successful in modern production cars [ 1][ 2] because they negatively affect vehicle ...
Steering knuckle. In automotive suspension, a steering knuckle or upright is that part which contains the wheel hub or spindle, and attaches to the suspension and steering components. [ 1] The terms spindle and hub are sometimes used interchangeably with steering knuckle, but refer to different parts. The wheel and tire assembly attach to the ...
Locking hubs. Locking hubs, also known as free wheeling hubs are fitted to some (mainly older) four-wheel drive vehicles, allowing the front wheels to rotate freely when disconnected (unlocked) from the front axle. This is done to reduce the mechanical resistance of the front-portion of the drivetrain when four-wheel drive is not in use. [ 1]
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The centerlock wheel and hub system was first introduced by Rudge-Whitworth in the early 1900s, for use in automobile wire wheels. Initially called "QD" (for "quickly disconnectable") the basic mechanism for "knock-off" style centerlock hubs was patented by 1908. It was quickly adopted by auto manufacturers and racers.
A hub-and-spoke conspiracy (or hub-and-spokes conspiracy) is a legal construct or doctrine of United States antitrust and criminal law. [ 1] In such a conspiracy, several parties ("spokes") enter into an unlawful agreement with a leading party ("hub"). The United States Court of Appeals for the First Circuit explained the concept in these terms ...