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  2. Elliptical trainer - Wikipedia

    en.wikipedia.org/wiki/Elliptical_trainer

    Commercial elliptical trainer (rear drive version) Row of elliptical trainers at a gym ElliptiGO trainers are elliptical but not stationary. An elliptical trainer or cross-trainer is a stationary exercise machine used to stair climb, walk, or run without causing excessive pressure to the joints, hence decreasing the risk of impact injuries.

  3. NordicTrack - Wikipedia

    en.wikipedia.org/wiki/NordicTrack

    They also carry a full line of elliptical trainers and exercise bikes. During the late 1990s and early 2000s, the company made their first and only foray in the commercial gym equipment market with their 9600 series. This range included a treadmill, an incline trainer, an elliptical, and recumbent and upright bikes.

  4. BowFlex, Inc. - Wikipedia

    en.wikipedia.org/wiki/Bowflex,_Inc.

    Nautilus, Inc. originated in 1986 with the sale of most of the company by the inventor of Nautilus machines, Arthur Jones. [11] Jones created the Nautilus machine, then called the Blue Monster, in the late 1960s, with the purpose of developing a fitness machine that accommodates human movement. [11]

  5. Exercise machine - Wikipedia

    en.wikipedia.org/wiki/Exercise_machine

    Ellipticals (elliptical machines) are a combination of stair-climbing and a treadmill. Generally it contains two tracks upon which the user stands. Users describe an elliptical motion (hence the machine name) while walking or jogging. Some ellipticals have magnetic resistance controls that add difficulty to doing the motion.

  6. Milling (machining) - Wikipedia

    en.wikipedia.org/wiki/Milling_(machining)

    Brown designed a "universal milling machine" that, starting from its first sale in March 1862, was wildly successful. It solved the problem of 3-axis travel (i.e., the axes that we now call XYZ) much more elegantly than had been done in the past, and it allowed for the milling of spirals using an indexing head fed in coordination with the table ...

  7. Powered paragliding - Wikipedia

    en.wikipedia.org/wiki/Powered_paragliding

    Powered parachutes typically use easier-to-manage but less efficient wings, have larger engines, are steered by foot and may be able to take along passengers. There are exceptions; a growing number of powered parachutes use elliptical wings, some use hand controls, and many are light, single-seat aircraft that meet FAA Part 103 requirements.

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  9. Water turbine - Wikipedia

    en.wikipedia.org/wiki/Water_turbine

    A water turbine is a rotary machine that converts kinetic energy and potential energy of water into mechanical work. Water turbines were developed in the 19th century and were widely used for industrial power prior to electrical grids. Now, they are mostly used for electric power generation.