(19)
(11) EP 0 081 941 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.08.1984 Bulletin 1984/31

(43) Date of publication A2:
22.06.1983 Bulletin 1983/25

(21) Application number: 82306373

(22) Date of filing: 01.12.1982
(84) Designated Contracting States:
BE DE FR GB NL SE

(30) Priority: 11.12.1981 US 329960

(71) Applicants:
  • FORD MOTOR COMPANY LIMITED
     ()
  • FORD-WERKE AKTIENGESELLSCHAFT
     ()
  • FORD FRANCE SOCIETE ANONYME
     ()
  • Ford Motor Company
     ()

(72) Inventors:
  • Rajagopal, Ganesh
     ()
  • Tallian, Richard
     ()

   


(54) Hydraulic valve


(57) A hydraulic valve for controlling the flow of hydraulic fluid from a source of fluid under pressure (17, 21) to and from at least one load shifting hydraulic motor (25). The valve comprises a valve body (10) housing an axially movable spool (11) and a spool manipulator means actuable to shift the spool (11) in opposite directions from a neutral position to cause fluid flow to a hydraulic motor to move a load coupled thereto in a desired direction. Incorporated in the valve are pilot operated poppet valves (34, 35) operative to substantially prevent fluid leakage past the main spool (11) when the latter is in its neutral position.






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