To achieve a gearset which will maintain the beneficial properties of using involute shaped teeth, while allowing the gear ratio to vary, a new gear profile has been identified. This new gear profile termed the “Hybrid Involute Profile”, maintains the unique characteristics of an involute gear profile with the addition of a specified angular acceleration. This allows for one gear to be engaged with another gear while the ratio between the two gears is changing. The development of the Hybrid Involute Profile exploits involutometry relationships and properties. The derivation of the Hybrid Involute Profile along with validation case studies are presented.

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