(19)
(11) EP 1 340 563 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.10.2004 Bulletin 2004/44

(43) Date of publication A2:
03.09.2003 Bulletin 2003/36

(21) Application number: 03003057.1

(22) Date of filing: 12.02.2003
(51) International Patent Classification (IPC)7: B22D 1/00, B22D 41/00
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
Designated Extension States:
AL LT LV MK RO

(30) Priority: 19.02.2002 JP 2002041843

(71) Applicant: TOKYO YOGYO KABUSHIKI KAISHA
Tajimi-shi, Gifu-ken 507-8607 (JP)

(72) Inventors:
  • Egashira, Hiroaki
    Tajimi-shi, Gifu-ken 507-8607 (JP)
  • Aramaki, Keizo
    Tajimi-shi, Gifu-ken 507-8607 (JP)
  • Kondo, Jyunya
    Tajimi-shi, Gifu-ken 507-8607 (JP)
  • Nakakita, Satoshi
    Tajimi-shi, Gifu-ken 507-8607 (JP)

(74) Representative: Sajda, Wolf E., Dipl.-Phys. et al
MEISSNER, BOLTE & PARTNER Postfach 86 06 24
81633 München
81633 München (DE)

   


(54) Ladle equipped with gas-blowing device having accumulator cylinder


(57) A ladle (1) equipped with a gas blowing device having an accumulator cylinder (7) is provided, which has the capability of suppressing molten metal from penetrating into an injection plug (3) embedded in the ladle (1) and having a high resistance leading to a longer service life of the injection plug (3). The gas-blowing device (5) comprises a main pipe (8) for blowing gas into the ladle (1) via a gas-blowing plug (3) from a positionally independent gas supply source (4); an accumulator cylinder (7) for accumulating the gas supplied through the main pipe (8); and a controller (6). The controller (6) is used for accumulating the gas into the accumulator cylinder (7) when the gas blowing through the main pipe (8) begins or when the gas blowing is carried out, and for starting to blow the gas accumulated in the accumulator cylinder (7) simultaneously with a termination of the gas blowing through the main pipe (8).






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