美国科罗拉多州的“先进能量技术”公司设计了一种新型无轮齿的减摩减速传动装置,它与行星式、齿轮式和蜗轮式传动装置相比有许多优点。该装置与以往的齿轮传动装置不同,它以球轴承代替齿轮轮齿使得传动中的滑动摩擦减少到非常小。球轴承在一个“摆动的”(通常所说余摆线的)、定位在四个座圈之间的轨道里运动。由于球追随着类似月亮绕太阳那么一个余摆线轨迹运动,所以新传动装置是一个变型的轴承。这 Advanced Energy Technologies, Colorado, USA, has designed a new, gearless, decelerated gearing that has many advantages over planetary, geared and worm gear transmissions. This device is different from the conventional gear transmission, which uses ball bearings instead of gear teeth to reduce the sliding friction in the transmission to very small. Ball bearings move in a “swinging” (often referred to as trochoid) locating in a track between four races. Since the ball follows a trochoidal trajectory like a moon orbiting the sun, the new transmission is a modified bearing. This