Patent ID: 9605742
Date: 2017-03-28
CPC Classifications: F16H,Y10T

Claim:
1. A strain wave gearing speed changing apparatus for changing an input speed at an input shaft to an output speed at an output shaft, the apparatus comprising: a coaxial pair of circular splines including a first circular spline having a spline tooth number T a coaxial pair of flex splines including a first flex spline having a spline tooth number T a wave generator connected to one of the input and output shafts of the apparatus; wherein the coaxial pair of flex splines being fixed together to operate flexingly on the wave generator and having equal spline tooth engagement pitch circle circumference lengths; one circular spline being fixed to a frame of the apparatus and another circular spline being connected to another of the input and output shafts that is not connected to the wave generator; and the coaxial pairs of circular and flex splines satisfying spline tooth number relationships of T