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  2. Virginia Graeme Baker Pool and Spa Safety Act - Wikipedia

    en.wikipedia.org/wiki/Virginia_Graeme_Baker_Pool...

    Although Graeme drowned, her official cause of death was "suction entrapment due to a faulty drain cover". Following Graeme's death in June 2002, her mother, Nancy Baker, began work to advocate pool and spa safety. She began lobbying Congress to pass legislation to require anti-entrapment drain covers as well as other pool and spa safety devices.

  3. List of railroad truck parts - Wikipedia

    en.wikipedia.org/wiki/List_of_railroad_truck_parts

    An axlebox, also known as a journal box in North America, is the mechanical subassembly on each end of the axles under a railway wagon, coach or locomotive; it contains bearings and thus transfers the wagon, coach or locomotive weight to the wheels and rails; the bearing design is typically oil-bathed plain bearings on older rolling stock, or roller bearings on newer rolling stock.

  4. Semi-trailer aerodynamic device - Wikipedia

    en.wikipedia.org/wiki/Semi-trailer_aerodynamic...

    Semi-trailer aerodynamic devices are devices affixed to semi-trailers, for the purpose of reducing aerodynamic drag caused by air turbulence.The two major types of device in use are trailer skirts (or side skirts), affixed to the underside of trailers, and trailer tails (or boat tails, or rear fairings), affixed to the rear.

  5. Semi-trailer truck - Wikipedia

    en.wikipedia.org/wiki/Semi-trailer_truck

    Conventional style cab tractor A cab-over semi-tractor Tractor with an end-dump trailer A FAW semi-trailer truck in China A semi-trailer truck (also known by a wide variety of other terms – see below) is the combination of a tractor unit and one or more semi-trailers to carry freight. A semi-trailer attaches to the tractor with a type of hitch called a fifth wheel. Other terms There are a ...

  6. Trailer (vehicle) - Wikipedia

    en.wikipedia.org/wiki/Trailer_(vehicle)

    A full trailer is a term used in the United States and New Zealand [5] for a freight trailer supported by front and rear axles and pulled by a drawbar. In Europe this is known as an A-frame drawbar trailer, and in Australia it is known as a dog trailer. Commercial freight trailers are produced to length and width specifications defined by the ...

  7. Rollover protection structure - Wikipedia

    en.wikipedia.org/wiki/Rollover_protection_structure

    Some tractor operators have raised concerns about using ROPS in low-clearance environments, such as in orchards and buildings. In response, NIOSH developed an Automatically Deploying Rollover Protective Structure (AutoROPS) which stays in a lowered position until a rollover condition is determined, at which time it deploys to a fully extended and locked position.

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