(19)
(11) EP 1 378 476 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.04.2004 Bulletin 2004/16

(43) Date of publication A2:
07.01.2004 Bulletin 2004/02

(21) Application number: 03014622.9

(22) Date of filing: 26.06.2003
(51) International Patent Classification (IPC)7: B65H 54/48
(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 RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 01.07.2002 JP 2002191621

(71) Applicant: Murata Kikai Kabushiki Kaisha
Minami-ku, Kyoto-shi, Kyoto 601 (JP)

(72) Inventors:
  • Kimura, Hidetoshi, Roureru Couto Muromachi 310
    Nakagyo-ku, Kyoto-shi, Kyoto (JP)
  • Muraya, Kenji
    Kaga-shi, Ishikawa (JP)
  • Hidaka, Ichiro
    Narutaki, Ukyo-ku, Kyoto-shi, Kyoto (JP)

(74) Representative: Liedl, Christine et al
c/o Hansmann & Vogeser, Albert-Rosshaupter-Strasse 65
81369 München
81369 München (DE)

   


(54) Traversing drum


(57) The present invention provides a traversing drum used in an automatic winder or the like, the traversing drum being made of ceramics and thus having a small mass. A drum main body of a traversing drum 1 used in an automatic winder or the like is composed of a double cylinder including inner cylinders 5A, 5B and an outer cylinder 9. The inner cylinders 5A, 5B and the outer cylinder 9 are integrally molded of a ceramic burned member. Consequently, a traversing drum can be manufactured which is rigid and light even if it is thin. It is thus possible to significantly reduce the power consumption of a rotative driving source for the traversing drum 1 and to extend the lifetime of the rotative driving source (Fig. 1).






Search report