Power steering mechanism

Details Power steering mechanism Power steering mechanism

1976-08-11

1978-04-25

Maslousky, Paul E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91465, F15B 910

Patent

active

040856577

ABSTRACT:
A power steering mechanism comprises distributing means for communicating fluid pressure to the compartments of a fluid motor associated with the steering linkage of the vehicle. Each distributing means comprises a ball valve member disposed in a chamber of a housing. The valve member is urged towards a first valve seat defined in a low pressure supply passage, by means of spring means, and towards a second valve seat defined in a high pressure supply passage by means of an extension of an actuating piston, said extension extending through the low pressure passage. The piston is moved by way of a sleeve disposed intermediate between the input and output members and connected thereto by means of a spline and screw arrangement. In response to a torque applied to the input member, the sleeve is allowed to move axially for displacing the piston and modifying the position of the valve member, thereby changing the value of the pressure transmitted to the associated compartment.

REFERENCES:
patent: 786652 (1905-04-01), Larsson
patent: 2685211 (1954-08-01), Haynes et al.
patent: 3310284 (1967-03-01), Inaba et al.

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