Hydraulically operated continuously variable transmission

Details Hydraulically operated continuously variable transmission Hydraulically operated continuously variable transmission

1987-09-23

1990-05-08

Look, Edward K.

Power plants

Pressure fluid source and motor

Having distinct cooling or lubricating structure

60488, 60489, F16D 3102

Patent

active

049227173

ABSTRACT:
A continuously variable transmission employing a hydraulic motor and a hydraulic pump that are interconnected by a closed hydraulic circuit. An oil chamber is defined between the pump cylinder of the hydraulic pump and the motor cylinder of the hydraulic motor. A common oil cooling unit is connected through oil passages to the closed hydraulic circuit and the oil chamber for cooling heated oil supplied therefrom. The common oil cooling unit effectively cools the oil from the two sources since the heat developed in the oil from the two sources generally varies inversely during different modes of operation.

REFERENCES:
patent: 2777286 (1957-01-01), Badalini
patent: 3364680 (1968-01-01), Osojnak
patent: 3449912 (1969-06-01), Dunikowski
patent: 3464206 (1969-09-01), Badalini
patent: 3508401 (1970-04-01), Aplin
patent: 3555817 (1971-01-01), Hann
patent: 3907043 (1975-09-01), Appleman
patent: 3999387 (1976-12-01), Knopf
patent: 4087969 (1978-05-01), Takahashi
patent: 4274505 (1981-06-01), Maust
patent: 4444093 (1984-04-01), Koga
patent: 4478134 (1984-10-01), Kawahara
patent: 4548036 (1985-10-01), Matsuda
patent: 4646520 (1987-03-01), Furumoto

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