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Machine translation
1. (WO1979000762) VARIABLE FLOW CONTROL VALVE FOR STEERING SYSTEMS OF ARTICULATED VEHICLES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000762    International Application No.:    PCT/US1979/000089
Publication Date: 04.10.1979 International Filing Date: 15.02.1979
IPC:
B62D 5/09 (2006.01), B62D 5/32 (2006.01)
Applicants:
Inventors:
Priority Data:
886970 15.03.1978 US
Title (EN) VARIABLE FLOW CONTROL VALVE FOR STEERING SYSTEMS OF ARTICULATED VEHICLES
(FR) SOUPAPE DE COMMANDE A DEBIT VARIABLE P0UR SYSTEME DE DIRECTION DE VEHICULES ARTICULES
Abstract: front page image
(EN)The steering system comprises at least one double-acting fluid cylinder (10, 11), a directional control valve (12) connected to the cylinder for alternately extending and retracting the cylinder and a hand metering unit (14) for communicating a fluid steering signal to the directional control valve whereby an engine-driven pump (13) is adapted to communicate pressurized fluid to the cylinder for steering purposes. A variable flow control valve (20) is interconnected between the pump and the hand metering unit for communicating a variable fluid flow to the hand metering unit in proportion to the speed of the pump to vary the fluid steering signal whereby an operator can sense the speed of the pump. In the preferred embodiment of this invention, the variable flow control valve comprises a pair of spring-biased, reciprocal members (26, 31) which sense a differential pressure across the valve to control fluid flow through an outlet which is adapted to be connected to the hand metering unit.
(FR)Le systeme de direction comprend au moins un cylindre hydraulique a double effet (10, 11), une soupape de commande directionnelle (12) reliee au cylindre pour produire alternativement son extension et sa contraction et un doseur manuel (14) servant a communiquer un signal hydraulique de direction a la soupape de commande directionnelle de maniere a ce qu"une pompe a moteur envoie du fluide sous pression au cylindre. Une soupape de commande a debit variable (20) est disposee entre la pompe et le doseur manuel afin que ce dernier puisse etre alimente en fluide sous un debit variable proportionnel a la vitesse de la pompe afin de faire varier le signal hydraulique de direction permettant a un operateur de detecter la vitesse de la pompe. Dans le mode preferentiel de realisation de cette invention, la soupape de commande a debit variable comprend une paire d"elements (26, 31) animees d"un mouvement de va-et-vient sous l"effet de ressorts opposes qui detectent la pression differentielle de la soupape pour commander le debit de fluide par une sortie connectee ou doseur manuel.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)