Variable speed transmission unit

Details Variable speed transmission unit Variable speed transmission unit

1988-08-19

1990-06-26

Wright, Dirk

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Fluid pump and motor in one of plural paths to or from...

475151, 475211, 475330, F16H 3700

Patent

active

049361651

ABSTRACT:
A variable speed transmission assembly comprises a variator (3) connected between main power input and output shafts (1 and 4), a power split differential gear assembly (2) splits power from the input between the output and the variator and the variator output is connected to a ratio spread differential (5), one output of which is connected to the main power output shaft, the other output also feeding the variator input, so that the variator handles less than one half of the total power and, the variator input runs at a speed which is inversely proportional to the output speed. In this way, the variator is better able to handle its power throughput.

REFERENCES:
patent: 2117340 (1938-05-01), Maurer
patent: 2384776 (1945-09-01), Trofimor
patent: 2647417 (1953-08-01), Trofimor
patent: 2972905 (1961-02-01), Bullard III
patent: 3046814 (1962-07-01), Soehrman
patent: 4690016 (1987-09-01), Whalen

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