Continuously variable transmission system with by-pass check val

Details Continuously variable transmission system with by-pass check val Continuously variable transmission system with by-pass check val

1989-02-23

1990-07-24

Braun, Leslie A.

Machine element or mechanism

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

Preselected indexed position

474 28, B60K 4116

Patent

active

049427865

ABSTRACT:
To provide for rapid response of a fluid pressure element pressing conical disks towards each other, to prevent slippage of a belt (25) between the conical faces of the conical disks (3, 3', 4, 4') upon abrupt changes in torque being transmitted to the driving shaft (1; 51, 52); additional fluid supply lines (23, 24; 73, 74) with check valves therein (21, 22; 71, 72) are connected between the torque sensor (19; 69, 70) and the connecting line (11, 12; 61, 62) extending between a control valve (10; 50) and the fluid pressure arrangement, typically a cylinder-piston arrangement (5, 7, 8, 6, 9), providing axial pressure of the movable one of the conical disks, the check valves having a fluid path direction from the pressure source--torque sensor line (18; 65, 75, 218) to the control valve (10, 50)--fluid pressure arrangement line (11, 12; 61, 62) and bypassing the control valve (10; 50).

REFERENCES:
patent: 4261213 (1981-04-01), Rattunde
patent: 4292031 (1981-09-01), Rattunde
patent: 4439170 (1984-03-01), Steuer
patent: 4608031 (1986-08-01), Vahabzadeh
patent: 4798561 (1989-01-01), Hattori et al.
patent: 4884997 (1989-12-01), Hattori

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