Method and apparatus for controlling an infinitely variable tran

Details Method and apparatus for controlling an infinitely variable tran Method and apparatus for controlling an infinitely variable tran

1981-12-11

1983-01-25

Bonck, Rodney H.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74868, 474 18, 474 28, B60K 4112, F16H 1106

Patent

active

043696759

ABSTRACT:
In apparatus for controlling the transmission ratio of an infinitely variable V-belt transmission having variable pitch input and output pulleys operable by hydraulic cylinders, each pulley being formed of a pair of conical discs, at least one of which is axially movable relative to the other disc of that pair and the input pulley being driven by a power source: a hydraulic control valve for operating the cylinders, the valve having an internal axially movable spool; a device responsive to the speed of the input pulley for urging the spool in one direction; a compression spring urging the spool in an opposite direction, the spring being loaded through an intermediate connecting assembly by an external loading device; and a regulating device connected to the intermediate connecting assembly, the regulating device being responsive to an operating variable of the transmission.

REFERENCES:
patent: 3115049 (1961-11-01), Moan
patent: 3195368 (1965-07-01), Boudewijn
patent: 3368426 (1968-02-01), Karig
patent: 3596528 (1971-08-01), Dittrich
patent: 3600960 (1971-08-01), Karig
patent: 3600961 (1971-08-01), Rattunde
patent: 3893344 (1975-07-01), Dantlgraber
patent: 3918312 (1975-11-01), Espenschied
patent: 3941016 (1976-03-01), Will
patent: 4161894 (1979-07-01), Gircosa
patent: 4187742 (1980-02-01), Achard

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