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  2. Duplex worm - Wikipedia

    en.wikipedia.org/wiki/Duplex_worm

    fig.1. A duplex worm or dual lead worm is a worm gear set where the two flanks are manufactured with slightly different modules and/or diameter quotients. As a result of this, different lead angles on both tooth profiles are obtained, so that the tooth thickness is continuously increasing all over the worm length, while the gap between two threads is decreasing.

  3. Worm drive - Wikipedia

    en.wikipedia.org/wiki/Worm_drive

    Therefore, regardless of the worm's size (sensible engineering limits notwithstanding), the gear ratio is the "size of the worm wheel - to - 1". Given a single-start worm, a 20-tooth worm wheel reduces the speed by the ratio of 20:1. With spur gears, a gear of 12 teeth must match with a 240-tooth gear to achieve the same 20:1 ratio.

  4. List of gear nomenclature - Wikipedia

    en.wikipedia.org/wiki/List_of_gear_nomenclature

    A crossed helical gear is a gear that operate on non-intersecting, non-parallel axes. The term crossed helical gears has superseded the term spiral gears. There is theoretically point contact between the teeth at any instant. They have teeth of the same or different helix angles, of the same or opposite hand.

  5. Recirculating ball - Wikipedia

    en.wikipedia.org/wiki/Recirculating_ball

    Recirculating ball, also known as recirculating ball and nut or worm and sector, is a steering mechanism commonly found in older automobiles, off-road vehicles, and some trucks. Most newer cars use the more economical rack and pinion steering instead, but some upmarket manufacturers (such as BMW and Mercedes-Benz ) held on to the design until ...

  6. .400 Cor-Bon - Wikipedia

    en.wikipedia.org/wiki/.400_Cor-bon

    573 ft⋅lbf (777 J) Source (s): Corbon [1] The .400 Corbon (10.2x22mm) is an automatic pistol cartridge developed by Cor-Bon in 1997. [2] It was created to mimic the ballistics of the 10 mm Auto cartridge in a .45 ACP form factor. It is essentially a .45 ACP case, necked down to .40 caliber with a 25-degree shoulder.

  7. Gear - Wikipedia

    en.wikipedia.org/wiki/Gear

    A worm is meshed with a worm wheel, which looks similar to a spur gear. Worm-and-gear sets are a simple and compact way to achieve a high torque, low speed gear ratio. For example, helical gears are normally limited to gear ratios of less than 10:1 while worm-and-gear sets vary from 10:1 to 500:1. [45]

  8. Strain wave gearing - Wikipedia

    en.wikipedia.org/wiki/Strain_Wave_Gearing

    Strain wave gearing (also known as harmonic gearing) is a type of mechanical gear system that uses a flexible spline with external teeth, which is deformed by a rotating elliptical plug to engage with the internal gear teeth of an outer spline. The German company Harmonic Drive SE manufactured the first series-produced gears under the product ...

  9. .38-40 Winchester - Wikipedia

    en.wikipedia.org/wiki/.38-40_Winchester

    The .38-40 Winchester (10.17x33mmR) is actually a .40 caliber (10 mm) cartridge shooting .401 in (10.2 mm) caliber bullets. The cartridge was introduced by Winchester in 1874 and is derived from their .44-40 Winchester. This cartridge was introduced for rifles, but in its reintroduction for cowboy action shooting it has seen some popularity as ...

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