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  2. Bevel gear - Wikipedia

    en.wikipedia.org/wiki/Bevel_gear

    Bevel gears are gears where the axes of the two shafts intersect and the tooth-bearing faces of the gears themselves are conically shaped. Bevel gears are most often mounted on shafts that are 90 degrees apart, but can be designed to work at other angles as well. [1] The pitch surface of bevel gears is a cone, known as a pitch cone. Bevel gears ...

  3. Spiral bevel gear - Wikipedia

    en.wikipedia.org/wiki/Spiral_bevel_gear

    The shape of a hypoid gear is a revolved hyperboloid (that is, the pitch surface of the hypoid gear is a hyperbolic surface), whereas the shape of a spiral bevel gear is normally conical. The hypoid gear places the pinion off-axis to the crown wheel (ring gear) which allows the pinion to be larger in diameter and have more contact area. In ...

  4. Non-circular gear - Wikipedia

    en.wikipedia.org/wiki/Non-circular_gear

    Non-circular gear example Another non-circular gear. A non-circular gear (NCG) is a special gear design with special characteristics and purpose. While a regular gear is optimized to transmit torque to another engaged member with minimum noise and wear and with maximum efficiency, a non-circular gear's main objective might be ratio variations, axle displacement oscillations and more.

  5. Gunnar Randers - Wikipedia

    en.wikipedia.org/wiki/Gunnar_Randers

    Gunnar Randers (21 April 1914 – 7 February 1992) was a Norwegian physicist. He is known as the principal figure within Norwegian nuclear research after World War II. He was employed at the Mount Wilson Observatory from 1939 to 1940, and at the Yerkes Observatory from 1940 to 1941. [1]

  6. Herringbone gear - Wikipedia

    en.wikipedia.org/wiki/Herringbone_gear

    A herringbone gear, a specific type of double helical gear, [1] is a side-to-side, rather than face-to-face, combination of two helical gears of opposite hands. [2] From the top, each helical groove of this gear looks like the letter V, and many together form a herringbone pattern (resembling the bones of a fish such as a herring).

  7. Gear train - Wikipedia

    en.wikipedia.org/wiki/Gear_train

    A gear train or gear set is a machine element of a mechanical system formed by mounting two or more gears on a frame such that the teeth of the gears engage.. Gear teeth are designed to ensure the pitch circles of engaging gears roll on each other without slipping, providing a smooth transmission of rotation from one gear to the next. [2]

  8. Recirculating ball - Wikipedia

    en.wikipedia.org/wiki/Recirculating_ball

    The recirculating ball steering mechanism contains a worm gear inside a block with a threaded hole in it; this block has gear teeth cut into the outside to engage the sector shaft (also called a sector gear) which moves the Pitman arm. The steering wheel connects to a shaft, which rotates the worm gear inside of the block.

  9. 2052: A Global Forecast for the Next Forty Years - Wikipedia

    en.wikipedia.org/wiki/2052:_A_Global_Forecast...

    2052 A Global Forecast for the Next Forty Years is a 2012 book describing trends in global development. It is written by Jørgen Randers and is a follow-up to The Limits to Growth, which in 1972 was the first worldwide report by the Club of Rome.