Hydraulically operated continuously variable transmission

Details Hydraulically operated continuously variable transmission Hydraulically operated continuously variable transmission

1987-12-09

1990-05-08

Look, Edward K.

Power plants

Pressure fluid source and motor

Condition responsive control means responsive to, or...

60468, 60487, 60488, F16D 3100

Patent

active

049227157

ABSTRACT:
A hydraulically operated continuously variable transmission includes a hydraulic pump coupled to an input shaft, a hydraulic motor coupled to an output shaft, a closed hydraulic circuit interconnecting the hydraulic pump and the hydraulic motor, and a control valve coupled to an inlet of the hydraulic pump and openable for discharging working oil from the hydraulic pump when the pressure of oil in the inlet of the hydraulic pump is below a prescribed pressure level. The transmission also includes a hydraulically hermetic chamber defined between the pump and motor cylinders and accommodating therein the pump swash plate and the pump plungers, and oil discharge means disposed in the motor cylinder for discharging oil from the hydraulically hermetic chamber when the pressure of oil in the hydraulically hermetic chamber is below a prescribed pressure level.

REFERENCES:
patent: 2617360 (1952-11-01), Barker
patent: 2777286 (1957-01-01), Badalini
patent: 3295459 (1967-01-01), Griffith
patent: 3364679 (1968-01-01), Osojnak
patent: 3522999 (1970-08-01), Liles
patent: 3704588 (1972-12-01), Trabbic
patent: 4158290 (1979-06-01), Cornell
patent: 4170153 (1979-10-01), Mizuno
patent: 4253347 (1981-03-01), Mizuno
patent: 4261229 (1981-04-01), Mizuno
patent: 4444093 (1984-04-01), Koga
patent: 4478134 (1984-10-01), Kawahara et al.
patent: 4646520 (1987-03-01), Furumoto
patent: 4699571 (1987-10-01), Bartholomaus

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