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  2. Power steering - Wikipedia

    en.wikipedia.org/wiki/Power_steering

    Power steering is a system for reducing a driver's effort to turn a steering wheel of a motor vehicle, by using a power source to assist steering. [1]Hydraulic or electric actuators add controlled energy to the steering mechanism, so the driver can provide less effort to turn the steered wheels when driving at typical speeds, and considerably reduce the physical effort necessary to turn the ...

  3. Steering engine - Wikipedia

    en.wikipedia.org/wiki/Steering_engine

    The size of Great Eastern, by far the largest ship of her day, made power steering a necessity. Steam-powered steering engines were employed on large steamships thereafter. The Mississippi River style steamboat Belle of Louisville, (originally Idlewild and oldest in her class), is fitted with a steering engine. Original equipment when the boat ...

  4. Active steering - Wikipedia

    en.wikipedia.org/wiki/Active_steering

    The BMW active steering system consists principally of a power-assisted rack and pinion steering gear, a double planetary gear system in the steering column, and an electric actuating motor. [ 1 ] The double planetary gear system incorporates an input sun gear connected to the driver’s steering wheel, two planetary gears, an output sun gear ...

  5. Helmsman - Wikipedia

    en.wikipedia.org/wiki/Helmsman

    The bridge of the freighter shown here has two steering stands. This redundancy is a safety measure in case one of the steering mechanisms that control the ship's rudder fails. A helmsman or helm (sometimes driver or steersman) is a person who steers a ship, sailboat, submarine, other type of maritime vessel, airship, or spacecraft.

  6. O-ring - Wikipedia

    en.wikipedia.org/wiki/O-ring

    Typical O-ring and application. An O-ring, also known as a packing or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a round cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, forming a seal at the interface.

  7. Fifth-wheel coupling - Wikipedia

    en.wikipedia.org/wiki/Fifth-wheel_coupling

    The fifth wheel on a tractor unit, rear view Fifth wheel on the bottom of the trailer A fifth wheel, already coupled, side view. The fifth-wheel coupling provides the link between a semi-trailer and the towing truck, tractor unit, leading trailer or dolly.