Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1981-03-24
1984-07-17
Herrmann, Allan D.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74870, 74862, 74866, 474 12, 474 28, 474 18, A60K 4112
Patent
active
044598793
ABSTRACT:
In a V-belt type continuously variable transmission for vehicles, the line pressure is supplied to a hydraulic servo system of the output pulley, while the pressure to a hydraulic servo system of the input pulley is regulated by a torque ratio control device. The torque ratio control device of the invention comprises an electric control circuit receiving input signals of the vehicle running conditions such as the throttle opening, the vehicle speed or the input pulley revolution speed and generating output signals to control the effective diameter of the input pulley, two electromagnetic solenoid valves controlled by the output signals of the electric control circuit, and a torque ratio control valve controlled by the two solenoid valves and regulating the hydraulic pressure supplied to the hydraulic servo system of the input pulley. The output hydraulic pressure of the torque ratio control device is supplied to the hydraulic servo system of the input pulley thereby continuously variable shifting is effected.
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patent: 4308764 (1982-01-01), Kawamoto et al.
Miki Nobuaki
Yokoyama Shoji
Herrmann Allan D.
Rolnicki Joseph M.
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