Continuously variable transmission

Details Continuously variable transmission Continuously variable transmission

1984-10-05

1986-05-20

Levy, Stuart S.

Endless belt power transmission systems or components

System including spaced pulleys interconnected by a belt

474 28, 474167, F16H 1100, F16H 702

Patent

active

045898596

ABSTRACT:
A continuously variable transmission for a vehicle (FIG. 1) has a drive pulley (4), a driven pulley (11), and a tension pulley (19) each having a pair of axially spaced rotors. The opposed inner faces of the rotors of each pulley are formed with slopes which have gradients with respect to the respective axis of rotation increasing continuously in proportion to the radii of the faces. A plurality of belts made up of thin bands (22a, 22b, 22c) run on the three pulleys (4, 11, 19) such that the respective band edges are in contact with the respective slopes of the three pulleys. The distances between the respective slopes of the drive and driven pulleys are variable, so that the rotating speed ratio between the drive and driven pulleys can be varied by varying the contacting radii of the belts with the drive and driven pulleys, while uniform tension is imparted to the belts by the tension pulley.

REFERENCES:
patent: 2459377 (1949-01-01), Halliman
patent: 2920494 (1960-11-01), Dodwell
patent: 3494210 (1970-02-01), Ashton et al.

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