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non-circular gear; elliptical gear; variable transmission; kinematic properties.


The gearing with changing transmission gear ratio are used in the practice, even though the "standard" gearing with constant transmission gear ratio are used more often. The article examines the mesh conditions proposed in elliptical gears, as I speed and power ratios in this proposed gearings. The work is devoted to the analysis of these kinematic conditions in the proposed gearings and examines their differences from "standard" ring gear transmission with a constant transference number. The problem is solved for elliptical, eccentric gear with a continuously variable gear ratio to a range from 0.5 through 1 to 2.


Acta Mechanica Slovaca. Volume 20, Issue 2, Pages 16 – 21, ISSN 1335-2393


  Meshing Condition and Kinematic Properties of non-circular Gear


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