Patent ID: 8887592

Claim:
A spherical involute gear coupling comprising: a. a first gear having a first axis of rotation and a second gear having a second axis of rotation, b. the first gear and the second gear each comprising a plurality of teeth, i. the teeth having engagement surfaces configured to engage contact surfaces on teeth of the opposing gear, and wherein ii. the engagement surfaces comprise spherical involute curves, c. wherein a first set of teeth on the first gear, and a first set of teeth on the second gear contact on a first circumferential side of the first sets of teeth for torque transfer; d. wherein a second set of teeth on the first gear, and a second set of teeth on the second gear contact a second circumferential side of the second sets of teeth upon reversal of the gear coupling for backlash prevention; and e. wherein the first sets of teeth are radially opposed to the second sets of teeth.