FIELD: machine building.
SUBSTANCE: one of engaging profiles corresponds to gear (1) with at least two screw teeth (2). Side working sections of surface of each tooth in main sections of this gear are outlined with arcs of circumference (3) eccentrically set off relative to rotation centre of the gear. Conjugating screw teeth (6) of second profile (5) in the same sections are outlined with sections of fronts of cycloidal curves. Vertexes and indentations between teeth (6) can be of any shape not crossing with teeth of wheel (1).
EFFECT: transmission with high gear ratio, small dimensions and high load capacity.
2 cl, 13 dwg
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