(19)
(11) EP 0 306 507 A1

(12)

(43) Date of publication:
15.03.1989 Bulletin 1989/11

(21) Application number: 88902110.0

(22) Date of filing: 11.02.1988
(51) International Patent Classification (IPC): 
G01B 7/ 00( . )
 F15B 15/ 28( . )
(86) International application number:
PCT/DK1988/000019
(87) International publication number:
WO 1988/006243 (25.08.1988 Gazette 1988/19)
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(30) Priority: 20.02.1987 DK 19870000886

(71) Applicants:
  • HVILSTED, Niels
    DK-3250 Gilleleje (DK)
  • PEDERSEN, Kaj
    DK-4000 Roskilde (DK)

(72) Inventors:
  • HVILSTED, Niels
    DK-3250 Gilleleje (DK)
  • PEDERSEN, Kaj
    DK-4000 Roskilde (DK)

(74) Representative: Selting, Günther, Dipl.-Ing., et al 
Patentanwälte von Kreisler, Selting, Werner Postfach 10 22 41
D-50462 Köln
D-50462 Köln (DE)

   


(54) A HYDRAULIC CYLINDER WITH A BUILT-IN ELECTRIC PISTON POSITION INDICATOR