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F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16H—GEARING
F16H13/00—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
F16H13/10—Means for influencing the pressure between the members
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FR722242D1930-09-191931-09-01Perfectionnements aux changements de vitesse à friction
ExpiredFR722242A
(fr)