(19)
(11) EP 2 455 518 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.04.2015 Bulletin 2015/17

(43) Date of publication A2:
23.05.2012 Bulletin 2012/21

(21) Application number: 11180923.2

(22) Date of filing: 12.09.2011
(51) International Patent Classification (IPC): 
D01H 5/78(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: 18.11.2010 JP 2010258249

(71) Applicant: Murata Machinery, Ltd.
Minami-ku Kyoto-shi Kyoto 601-8326 (JP)

(72) Inventors:
  • Ota, Naritoshi
    Kyoto-shi, Kyoto 612-8686 (JP)
  • Fujita, Manabu
    Kyoto-shi, Kyoto 612-8686 (JP)
  • Mori, Hideshige
    Kyoto-shi, Kyoto 612-8686 (JP)
  • Ikkai, Tomoyuki
    Kyoto-shi, Kyoto 612-8686 (JP)
  • Satomi, Shinichi
    Kyoto-shi, Kyoto 612-8686 (JP)
  • Ikeno, Masayuki
    Kyoto-shi, Kyoto 612-8686 (JP)
  • Morita, Akihiro
    Kyoto-shi, Kyoto 612-8686 (JP)
  • Hata, Naoki
    Kyoto-shi, Kyoto 612-8686 (JP)

(74) Representative: Zimmermann, Tankred Klaus et al
Schoppe, Zimmermann, Stöckeler Zinkler, Schenk & Partner mbB Patentanwälte Radlkoferstrasse 2
81373 München
81373 München (DE)

   


(54) Draft roller, draft device, and spinning machine


(57) A top front roller (20) includes a fiber-contacting portion (30) formed with a substantially uniform diameter and adapted to make a fiber bundle to contact with an outer peripheral surface thereof, and a reduced-diameter portion (31) having a diameter shorter than the fiber-contacting portion (30) at both ends of the fiber-contacting portion in an axial direction. A total width of the fiber-contacting portion (30) and the reduced-diameter portion (31) in the axial direction is 30 mm or longer and 34 mm or shorter, and a width of the fiber-contacting portion (30) in the axial direction is less than 18 mm.







Search report









Search report