30-04-2015 дата публикации
Номер: US20150119179A1
A speed change device comprising an inner race having an outer surface, an outer race having an inner surface, and set of orbital rollers including inner rollers in rolling contact with the outer surface of the inner race and outer rollers in rolling contact with the inner surface of the outer race. 1. A speed change device comprising:an inner race having an outer surface;an outer race having an inner surface;a set of orbital rollers including inner rollers in rolling contact with the outer surface of the inner race and outer rollers in rolling contact with the inner surface of the outer race;each and every inner roller being in rolling contact with two outer rollers; andeach and every outer roller being in rolling contact with two inner rollers.2. The speed change device of in which each of the inner race and outer race are centered on an axis claim 1 , and claim 1 , for each pair of a first inner roller that contacts a first outer roller claim 1 , where a traction angle ø is defined as the angle between a first line extending outward from the axis through a center of the first inner roller and a second line extending from the contact point of the first outer roller with the outer race and a contact point of the first diner roller with the inner race claim 1 , and the first inner roller contacts the inner race with a first coefficient of friction cf1 and the first outer roller contacts the outer race with claim 1 , a second coefficient of friction cf2 claim 1 , cf1>tan(ø) and cf2>tan(ø).3. The speed change device of in which the traction angle is less than or equal to 45 claim 2 , 40 claim 2 , 39 claim 2 , 38 claim 2 , 37 claim 2 , 36 claim 2 , 35 claim 2 , 34 claim 2 , 33 claim 2 , 32 claim 2 , 31 claim 2 , 30 claim 2 , 29 claim 2 , 28 claim 2 , 27 claim 2 , 26 claim 2 , 25 claim 2 , 24 claim 2 , 23 claim 2 , 22 claim 2 , 21 claim 2 , 20 claim 2 , 19 claim 2 , 18 claim 2 , 17 claim 2 , 16 or 15 degrees.4. The speed change device of claim 2 , or in which one or ...
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