(19)
(11) EP 0 447 384 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.03.1992 Bulletin 1992/10

(43) Date of publication A2:
18.09.1991 Bulletin 1991/38

(21) Application number: 91850064.6

(22) Date of filing: 13.03.1991
(51) International Patent Classification (IPC)5: B66C 1/02, B66F 3/24
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI LU NL

(30) Priority: 14.03.1990 SE 9000901

(71) Applicant: CONVACOR AB
S-431 53 Mölndal (SE)

(72) Inventor:
  • Emblad, Leif
    S-434 23 Kungsbacka (SE)

(74) Representative: Lautmann, Kurt O. 
KURT LAUTMANNS PATENTBYRA AB Box 245
S-691 25 Karlskoga
S-691 25 Karlskoga (SE)


(56) References cited: : 
   
       


    (54) Control device in vacuum hoist means


    (57) ) The present invention relates to vacuum hoist means (1-11) of the type described in US Patent 4 413 853 of 8 November, 1983, for instance. In such hoist means (1-11) the speed of the lowering movement can be controlled but not that of the hoisting movement. The invention enables speed-control of the latter movement by supplying the vacuum-generating means (5) with a controllable quantity of air in parallel with air from the container (1) of the vacuum hoist means.






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