(19)
(11) EP 1 431 228 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.11.2004 Bulletin 2004/45

(43) Date of publication A2:
23.06.2004 Bulletin 2004/26

(21) Application number: 04006916.3

(22) Date of filing: 09.02.2000
(51) International Patent Classification (IPC)7: B66B 5/00
(84) Designated Contracting States:
DE FR GB NL

(62) Application number of the earlier application in accordance with Art. 76 EPC:
00902881.2 / 1167268

(71) Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
Tokyo 100-8310 (JP)

(72) Inventors:
  • Ishii, Toshiaki
    Tokyo 100-8310 (JP)
  • Ito, Kazumasa
    Tokyo 100-8310 (JP)
  • Tomidokoro, Makoto
    Tokyo 100-8310 (JP)

(74) Representative: HOFFMANN - EITLE 
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München
81925 München (DE)

   


(54) Safety device for working on top of an elevator car


(57) A safety device for working on top of an elevator car, employed in an elevator in which a driving machine (21) for raising and lowering a car (5) is disposed at an upper portion of a hoistway (1) and a portion of the driving machine (21) is disposed in an area where the car (5) is projected in its raising and lowering direction, comprises:
  • a light projecting device (51) provided on a side wall of the hoistway (1) for horizontally projecting a plurality of light beams (53) below the driving machine (21);
  • a light receiving device (52) provided on a side wall of the hoistway (1) opposite to said light projecting device (51) for receiving the light beams (53) projected from said light projecting device (51); and
  • a stop circuit (40) for stopping the raising of the car (5) when at least one of the light beams (53) is intercepted.






Search report