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US 4,905,782 AGranted
Steering valve for vehicles
AssigneeZahnradfabrik Friedrichshafen AG
InventorsWolfgang Rieger, Werner Breitweg
Life of this patent
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AssigneeZahnradfabrik Friedrichshafen AG
InventorsWolfgang Rieger, Werner Breitweg
Estimating the term…
A steering valve for vehicles has a torque input member for connection to a steering wheel and connects through a torque rod to an output shaft, having coacting valving components operated by relative rotation during the initial torque stress on the steering wheel between the input member and the output shaft in order to control flow to and from the servomotor. The torque rod has an average reduced cross section and is particularly manufactured to take torque stress for simulation of steering resistance. The torque rod has end connecting members and a connecting member can be utilized to effect a shorter overall length of the torque rod which determines the overall length of the steering valve as well as affording support. Thus, one such connecting member adjacent the output shaft is elongated as a bearing for the valving component rotated by the steering wheel, and also has a return flow throttling port for pressure reduction of return flow to quiet the noise of such flow.
In a vehicle steering valve of the kind having a torque input member (1) for connection to a steering wheel and comprising a valve rotor (R) within a valve sleeve (2) which connects to an output member (3) for steering actuation and a torque rod (6) transmits torque for said input member to said output member between limit stops with relative rotation of said valve rotor and valve sleeve to control flow to and from a servomotor;
In a vehicle steering valve of the kind having a torque input member (1) for connection to a steering column and comprising a valve rotor (R) within a valve sleeve (2) which connects to an output member (3) for steering actuation and a torque rod (6) transmits torque from said input member to said output member between limit stops with relative rotation of said valve rotor and valve sleeve to control flow to and from a servomotor;
Dependencies are inferred from the claim text.