Steering valve with activation threshold

Details Steering valve with activation threshold Steering valve with activation threshold

1995-03-23

1997-10-28

Herrmann, Allan D.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

13762524, 464 38, 464 39, 464 97, B62D 5083

Patent

active

056808046

ABSTRACT:
A steering valve (1) for supplying an actuator with hydraulic pressure, consists of an input shaft (2), an output shaft (3), a torque rod (4), connected at one end to the input shaft (2) and at the other end to the output shaft (3), and a valve sleeve (5) surrounding the input shaft (2). A torsionally resistant, axially elastic element (9) is contained within the steering valve (1), connected at one end to the input shaft (2) and at the other end to a catch device (10). The catch device (10) ensures no relative displacement between the valve sleeve (5) and the input shaft (2); prior to a predetermined degree of torque, and converts the torque acting upon the input shaft (2) to axial forces acting upon the elastic element (9) until a release position is reached. The elastic element (9) is mounted on the input shaft (2) by means of a bearing sleeve (11), which is fixed in an axial position on the input shaft (2).

REFERENCES:
patent: 4774847 (1988-10-01), Breitweg
patent: 5001824 (1991-03-01), Ayers
patent: 5361861 (1994-11-01), Miller

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