Patent ID: 6375594
Filing Date: 2002-04-23
Classification: F16H

Abstract:
A continuously variable toroidal transmission having:an input shaft (1); an input disc (4,6) coaxially disposed for rotation with the input shaft and having a toroidal inner surface; an output disc (5,7) coaxially disposed relative to the input shaft and having a toroidal inner surface, the input disc and the output disc forming one pair; a plurality of tiltable wheels (18,19) placed between the toroidal surfaces of the input disc and output disc for transmitting a torque from the input disc to the output disc; a pressure application device (8) adjacent the input disc in order to urge it in a direction toward the output disc; an output component for rotation with the output disc; and an axial member (2) supporting the output disc; supports (16,17) are provided for the wheels (18,19) and are mounted to the ends of lower and upper cross yokes; and wherein the ends (28â€²) of the upper cross yokes (12,13) are shaped to reduce the spacing from the lower cross yokes (27), the supports (16,17) have upper bearings (20) and lower bearings (21) which penetrate corresponding recesses (29â€²) in the ends (28â€²) of the upper cross yokes (12,13) and of the lower cross yokes (27) and a diameter (d2) of the upper bearings (20) is larger than a diameter (d1) of the lower bearings (21).