Control system for an infinitely variable transmission

Details Control system for an infinitely variable transmission Control system for an infinitely variable transmission

1985-01-29

1986-12-09

Staab, Lawrence J.

Machine element or mechanism

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

Preselected indexed position

474 28, 474 18, B60K 4112

Patent

active

046273131

ABSTRACT:
A control system for an infinitely variable belt-drive transmission which has a drive pulley having a hydraulically shiftable disc and a servo chamber for shifting the disc, a driven pulley having a hydraulically shiftable disc and a servo chamber for shifting the disc, and a belt engaged with both the pulleys. A hydraulic control circuit is provided for supplying oil to the servo chambers and for draining the servo chambers. A lubricating oil circuit is provided in the hydraulic control circuit for supplying lubricating oil to the drive pulley, and a passage is provided for supplying a part of the lubricating oil to the servo chamber of the drive pulley, thereby filling the servo chamber with the oil before the starting of transmission operation.

REFERENCES:
patent: 4369675 (1983-01-01), van Deursen
patent: 4475416 (1984-10-01), Underwood
patent: 4534243 (1985-08-01), Yokoyama et al.
patent: 4545265 (1985-10-01), Abo et al.

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