(19)
(11) EP 0 238 356 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
17.01.1990 Bulletin 1990/03

(43) Date of publication A2:
23.09.1987 Bulletin 1987/39

(21) Application number: 87302438.4

(22) Date of filing: 20.03.1987
(51) International Patent Classification (IPC)4: B66D 1/56, B66D 1/44
(84) Designated Contracting States:
DE FR GB IT NL

(30) Priority: 20.03.1986 GB 8606940
31.10.1986 GB 8626045

(71) Applicant: Monyana Engineering Services
Oldmeldrum Aberdeenshire AB5 0GA Scotland (GB)

(72) Inventor:
  • Rogerson, James
    Kintore Aberdeenshire Scotland (GB)

(74) Representative: Pattullo, Norman et al
Murgitroyd and Company 373 Scotland Street
Glasgow G5 8QA
Glasgow G5 8QA (GB)


(56) References cited: : 
   
       


    (54) Control system for a fluid actuated motor


    (57) A control system for a fluid actuated motor, such as that driving the prime mover of a winch, said system comprising a conduit for feeding fluid to the motor, a valve actuable to open and close the conduit, and means for actuating the valve to open or close the conduit when a predetermined condition, such as an upper or a lower limit of a load, is achieved through operation of the motor. The actuating means may comprise a second conduit for feeding fluid to the valve, and means for closing the second conduit for feeding fluid to the valve, and means for closing the second conduit when said predetermined condition is achieved; the closure of the second conduit results in actuation of the first valve to close the main conduit.






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