Variable speed transmission

Details Variable speed transmission Variable speed transmission

1990-12-21

1991-12-24

Bui, Thuy M.

Endless belt power transmission systems or components

Pulley with expansible rim means or pulleys with alternately...

F16H 5517

Patent

active

050748262

ABSTRACT:
A variable speed transmission in which the output speed is infinitely adjustable within a given speed range and is accurately controlled. The variable speed transmission includes two pulley assemblies that are rotatably connected by an endless chain, control levers and a control screw for varying the effective pitch radius of at least one of the pulley assemblies and the associated chain. The output from one of the pulley assemblies serves as the elliptical ball bearing assembly input that serves to deform a nonrigid external gear of a flexible gear assembly. The output from the other pulley assembly through gears controls a round rigid internal gear that intermittently meshes with the nonrigid external gear. This arrangement provides extremely accurate speed control of the output from the flexible gear assembly that comes form the nonrigid external gear. The pulley assemblies, the endless chain, control levers, and the flexible gear assembly are located within the same compact hollow unitary housing.

REFERENCES:
patent: 3604282 (1971-09-01), Shambaugh

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