Patent ID: 7959533
Filing Date: 2011-06-14
Classification: F16H,Y10T

Abstract:
1. A continuously variable transmission (CVT) comprising: a first traction ring; a second traction ring; a plurality of power rollers interposed between and in contact with the first and second traction rings, wherein the power rollers are configured to spin about a tiltable axis; first and second torsion springs, wherein the first and second traction rings each include a recess adapted to receive and partially house the first and the second torsion springs, respectively; a first roller cage having a circumferential extension, said extension having a slit for receiving the first torsion spring, said extension adapted to cooperate with the first traction ring for substantially housing the first torsion spring in the first traction ring; and a second roller cage having a circumferential extension, said extension having a slit for receiving the second torsion spring, said extension adapted to cooperate with the second traction ring for substantially housing the second torsion spring in the second traction ring.