(19)
(11) EP 0 197 620 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.04.1987 Bulletin 1987/14

(43) Date of publication A2:
15.10.1986 Bulletin 1986/42

(21) Application number: 86300228

(22) Date of filing: 15.01.1986
(84) Designated Contracting States:
CH DE FR GB IT LI NL

(30) Priority: 09.04.1985 JP 7467485

(71) Applicant: Matsui. Akio
 ()

(72) Inventor:
  • Matsui. Akio
     ()

   


(54) Cylinder locking device


(57) A cylinder locking device for a fluid pressure cylinder in which two brake members (6, 7) are formed by dividing axially into two a thick cylinder having outer and inner circumferences in eccentric relation, the division being made in the region of maximum thickness and the region of minimum thickness. A piston rod (5) of a fluid pressure cylinder (1) is slidably fitted within the inner circumferential portion of the nearly semi-cylindrical brake members (6, 7). Support members (8, 9) rotatably support the outer circumferential portions of the two brake members (6, 7). A spring (14) is arranged to bias the brake members (6, 7) in a direction to lock the piston rod (5), and an actuator (20) can rotate the brake members (6,7) in a direction to release them from their locking condition against the biasing force of the spring (14).






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