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  2. Strain wave gearing - Wikipedia

    en.wikipedia.org/wiki/Strain_Wave_Gearing

    Harmonic Drive SE strain wave gear set consisting of wave generator bearing (top left), flexspline cup (top right) and circular spline ring (bottom). 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 ...

  3. Electric generator - Wikipedia

    en.wikipedia.org/wiki/Electric_generator

    Electric generator. U.S. NRC image of a modern steam turbine generator (STG). In electricity generation, a generator[ 1] is a device that converts motion-based power ( potential and kinetic energy) or fuel-based power ( chemical energy) into electric power for use in an external circuit. Sources of mechanical energy include steam turbines, gas ...

  4. Commutator (electric) - Wikipedia

    en.wikipedia.org/wiki/Commutator_(electric)

    A commutator consists of a set of contact bars fixed to the rotating shaft of a machine, and connected to the armature windings. As the shaft rotates, the commutator reverses the flow of current in a winding. For a single armature winding, when the shaft has made one-half complete turn, the winding is now connected so that current flows through ...

  5. Edwin R. Fellows - Wikipedia

    en.wikipedia.org/wiki/Edwin_R._Fellows

    Edwin R. Fellows (May 29, 1865 – May 21, 1945) was an American inventor and entrepreneur from Torrington, Connecticut who designed and built a new type of gear shaper in 1896 and, with the mentoring of James Hartness, left the Jones & Lamson Machine Company to co-found the Fellows Gear Shaper Company in Springfield, Vermont, which became one of the leading firms in the gear-cutting segment ...

  6. Epicyclic gearing - Wikipedia

    en.wikipedia.org/wiki/Epicyclic_gearing

    Epicyclic gearing or planetary gearing is a gear system consisting of one or more outer, or planet, gears or pinions, revolving about a central sun gear or sun wheel. [ 4][ 5] Typically, the planet gears are mounted on a movable arm or carrier, which itself may rotate relative to the sun gear.

  7. Engine-generator - Wikipedia

    en.wikipedia.org/wiki/Engine-generator

    Engine-generator. An engine–generator is the combination of an electrical generator and an engine ( prime mover) mounted together to form a single piece of equipment. This combination is also called an engine–generator set or a gen-set. In many contexts, the engine is taken for granted and the combined unit is simply called a generator.

  8. Gear - Wikipedia

    en.wikipedia.org/wiki/Gear

    A gear[ 1][ 2] or gearwheel[ 3][ 4][ 5] is a rotating machine part typically used to transmit rotational motion and/or torque by means of a series of teeth that engage with compatible teeth of another gear or other part. The teeth can be integral saliences or cavities machined on the part, or separate pegs inserted into it.

  9. Gear manufacturing - Wikipedia

    en.wikipedia.org/wiki/Gear_manufacturing

    Gear manufacturing refers to the making of gears. Gears can be manufactured by a variety of processes, including casting, forging, extrusion, powder metallurgy, and blanking. As a general rule, however, machining is applied to achieve the final dimensions, shape and surface finish in the gear. The initial operations that produce a semifinishing ...