Attempting to understand a fulcrum gear operation in the application of a patent. For two different sized meshed gears in-line where is the "fulcrum point"? Where the two gears mesh? If I have a drive gear (G1) that is internal to and meshed with a larger internal toothed driven gear (G2), where is the "fulcrum point" located? If I have a third gear (G3) that is meshed with teeth external to G2, G2 has teeth both interior and exterior to the gear ring, where is the fulcrum point of this three-gear combination? With G3 as the driven gear, how do I determine the forces on G3?
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