Control units for vehicle powersteering mechanisms

Details Control units for vehicle powersteering mechanisms Control units for vehicle powersteering mechanisms

1976-07-06

1978-01-24

Geoghegan, Edgar W.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91391R, 60386, F15B 910

Patent

active

040697436

ABSTRACT:
The present invention relates to a control unit for a vehicle powersteering mechanism comprising a housing having an inlet for connection to a source of fluid under pressure, an outlet for returning hydraulic fluid under pressure to said source, a pair of ports for connection to a hydraulic servomotor the movement of which controls the steering of the dirigible wheels of the vehicle, a hydraulic motor provided with a rotatable element and a follower element in operative combination with a distributor valve means provided with at least one displaceable body, said combination being operable on rotation of a control shaft connected thereto to divert hydraulic fluid flowing from said inlet through said housing to said outlet to one of said ports, and thus to its associated chamber of said servomotor, via said hydraulic motor, the hydraulic fluid being exhausted from the other chamber of the servomotor to said outlet, via said other port.

REFERENCES:
patent: 3385057 (1968-05-01), Pruvot et al.
patent: 3452543 (1969-07-01), Goff et al.

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