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Machine translation
1. (WO1998003772) SPIRAL-SHAPED ROLLER CUTTER AND TUNNEL EXCAVATOR CUTTER HEAD PROVIDED WITH SAME
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1998/003772    International Application No.:    PCT/JP1997/002512
Publication Date: 29.01.1998 International Filing Date: 22.07.1997
Chapter 2 Demand Filed:    22.07.1997    
IPC:
E21B 10/16 (2006.01), E21B 29/10 (2006.01), E21D 9/10 (2006.01)
Applicants: KOMATSU LTD. [JP/JP]; 3-6, Akasaka 2-chome, Minato-ku, Tokyo 107 (JP) (For All Designated States Except US).
KURAMOTO, Toyoshi [JP/JP]; (JP) (For US Only).
TAKADA, Hiroshi [JP/JP]; (JP) (For US Only).
OKUYAMA, Junichirou [JP/JP]; (JP) (For US Only)
Inventors: KURAMOTO, Toyoshi; (JP).
TAKADA, Hiroshi; (JP).
OKUYAMA, Junichirou; (JP)
Agent: HASHIZUME, Yoshihiko; Komatsu Building, 8th floor, 3-6, Akasaka 2-chome, Minato-ku, Tokyo 107 (JP)
Priority Data:
8/210580 22.07.1996 JP
Title (EN) SPIRAL-SHAPED ROLLER CUTTER AND TUNNEL EXCAVATOR CUTTER HEAD PROVIDED WITH SAME
(FR) ORGANE CYLINDRIQUE DE COUPE A SPIRALES ET TETE DE COUPE POUR FOREUSE DE GALERIE LE COMPORTANT
Abstract: front page image
(EN)A spiral-shaped roller cutter (3), which can efficiently and surely cut reinforcement (7) embedded in existing pipes (6), and a tunnel excavator cutter head (1) provided with the same. Thus the spiral-shaped roller cutter (3) is provided with a plurality of spiral-shaped blade portions (3a). Also, the cutter head (1) is provided with respective roller cutters (3, 3) which extend substantially radially of the cutter head and are rotatable about respective axes (2, 2) of rotation.
(FR)L'invention a trait à un organe cylindrique de coupe à spirales (3) susceptible de couper efficacement et sûrement un élément de renfort (7) encastré dans des canalisations (6) ainsi qu'à une tête de coupe pour foreuse de galerie (1) le comportant. Cet organe cylindrique de coupe à spirales (3) comprend plusieurs lames spiralées (3a). Des organes cylindriques de coupe (3, 3) sont également disposés radialement à la tête de coupe (1) et peuvent tourner autour de leurs axes de rotation (2, 2) respectifs.
Designated States: US.
European Patent Office (DE, FR, GB).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)