(19)
(11) EP 2 743 225 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.10.2014 Bulletin 2014/40

(43) Date of publication A2:
18.06.2014 Bulletin 2014/25

(21) Application number: 13178244.3

(22) Date of filing: 12.03.2012
(51) International Patent Classification (IPC): 
B66B 5/02(2006.01)
 B66B 5/00(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 11.03.2011 FI 20115246
14.03.2011 FI 20115248

(62) Application number of the earlier application in accordance with Art. 76 EPC:
12757008.3 / 2665669

(71) Applicant: Kone Corporation
00330 Helsinki (FI)

(72) Inventors:
  • Tenhunen, Asmo
    05830 Hyvinkää (FI)
  • Hakala, Harri
    05860 Hyvinkää (FI)
  • Karimpanackal Natarajan, Nithil
    00900 Helsinki (FI)
  • Rantanen, Pekka
    05800 Hyvinkää (FI)
  • Vuoti, Pekka
    05840 Hyvinkää (FI)
  • Lampinen, Riku
    00520 Helsinki (FI)
  • Jokinen, Risto
    05820 Hyvinkää (FI)
  • Korvenranta, Sakari
    05830 Hyvinkää (FI)
  • Kauppinen, Tuukka
    215121 Suzhou (CN)
  • Pikivirta, Ari
    12400 Tervakoski (FI)
  • Saarinen, Marko
    11710 Riihimäki (FI)
  • Valjus, Petteri
    00430 Helsinki (FI)

(74) Representative: Graf Glück Kritzenberger 
Hermann-Köhl-Strasse 2a
93049 Regensburg
93049 Regensburg (DE)

   


(54) Elevator system


(57) The invention relates to an elevator system and also to a method for ensuring the safety of an elevator system. The elevator system comprises a driving member (1) and also a hoisting means (3), which engages with the aforementioned driving member (1) by frictional traction. The elevator system comprises traction determination means (4, 5, 6A, 6B, 7) for determining the traction of the driving member (1), and the elevator system comprises a control circuit (4), which is configured to start a procedure ensuring the safety of the elevator system after the traction determination means (4, 5, 6A, 6B, 7) have detected that the traction of the driving member (1) has weakened.







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