(19)
(11) EP 0 327 789 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.06.1990 Bulletin 1990/25

(43) Date of publication A2:
16.08.1989 Bulletin 1989/33

(21) Application number: 88830144.7

(22) Date of filing: 31.03.1988
(51) International Patent Classification (IPC)4: B05C 3/08, C23G 3/00, C25D 17/20
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR LI LU NL SE

(30) Priority: 12.02.1988 IT 1939688

(71) Applicant: ACCIAIERIE E FERRIERE LOMBARDE FALCK S.P.A.
I-20121 Milan (IT)

(72) Inventors:
  • Morando, Mario
    I-20099 Sesto San Giovanni (Milano) (IT)
  • Ceriani, Bruno
    I-20139 Milano (IT)

(74) Representative: Perani, Aurelio et al
c/o JACOBACCI & PERANI S.p.A Via Visconti di Modrone, 7
20122 Milano
20122 Milano (IT)


(56) References cited: : 
   
       


    (54) A tumbler for chemical and/or thermal surface treatment of blanks, and an apparatus incorporating the tumbler


    (57) A tumbler (1) for chemical and/or thermal surface treatment of bulk blanks (2) comprises a substantially cylindrical drum (5) having a perforated skirt (9) formed with a longitudinal aperture (10) which is closed by an arcuate wall (15) slidable around the drum (5).







    Search report