(19)
(11) EP 0 124 024 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.11.1985 Bulletin 1985/48

(43) Date of publication A2:
07.11.1984 Bulletin 1984/45

(21) Application number: 84104407

(22) Date of filing: 18.04.1984
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 22.04.1983 US 487638

(71) Applicant: FMC CORPORATION
 ()

(72) Inventor:
  • Cuhel, Leon L.
     ()

   


(54) Hydraulic circuit for self-undecking crane


(57) A hydraulic circuit for a self-undecking crane having a separable upper and retractable legs with extendable jacks for elevating the upper, said circuit comprising first means to raise and lower said legs, second means to extend and retract said jacks, and third means responsive to the extension of said jacks to render said first means inoperative.







Search report