Planetary gear transmission systems or components – Nonplanetary variable speed or direction transmission... – Nonplanetary transmission is friction gearing
Patent
1990-06-27
1991-09-03
Herrmann, Allan D.
Planetary gear transmission systems or components
Nonplanetary variable speed or direction transmission...
Nonplanetary transmission is friction gearing
F16H 3700
Patent
active
050450379
ABSTRACT:
A friction stepless speed change device includes an input shaft, a driven shaft and an output shaft arranged on a common axis, and a countershaft rotatably provided in parallel with the common axis. The device further includes tow rockable arms rockable about the countershaft, a cylindrical driving rotary assembly rotatably provided on free ends of the rockable arms to enclose the driven shaft, a set of driving friction discs rotating together with the driving rotary assembly, and a set of driven friction discs rotating together with the driven shaft. The countershaft includes a first gear in mesh with a gear fixed to the input shaft, a second gear in mesh with a gear fixed to the driving rotary assembly, and a third gear in mesh with a sun gear of a planetary gear provided on the driven shaft. The output shaft is integrally formed with an internal gear in mesh with planet gears of the planetary gear.
REFERENCES:
patent: 1963599 (1934-06-01), Tscherne
patent: 2583496 (1952-01-01), Rougelot
Hirai Kiyofumi
Takamiya Kikuzo
Tamura Yoshitaka
Bridgestone Cycle Co. Ltd.
Herrmann Allan D.
Massey Ryan W.
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