Patent ID: 8764605

Claim:
A variator comprising first and second races mounted for rotation about a variator axis and having facing semi-toroidally recessed surfaces, first and second rollers disposed between the races to run upon their recessed surfaces and so transfer drive from one race to the other at a continuously variable speed ratio, each roller being rotatably mounted upon a respective carrier and being free to undergo a tilting motion to change a tilt angle between its axis and the variator axis, and a roller control part provided with mountings which permit it to undergo both (a) rotation about a fulcrum and (b) translation, the carriers being coupled to the control part on opposite sides of the fulcrum so that rotation of the control part causes the rollers both to move in the same circumferential direction about the variator axis and consequently to steer themselves in unison to new tilt angles thereby providing a change in the speed ratio, and translation of the control part permits the tilt angle of one roller to vary relative to that of the other and so enables the rollers to adopt positions in which load upon them is balanced, the variator being characterised by provision of a damper which damps translation of the control part.