Global Patent Index - EP 0915231 A4

EP 0915231 A4 2000-11-15 - SPIRAL-SHAPED ROLLER CUTTER AND TUNNEL EXCAVATOR CUTTER HEAD PROVIDED WITH SAME

Title (en)

SPIRAL-SHAPED ROLLER CUTTER AND TUNNEL EXCAVATOR CUTTER HEAD PROVIDED WITH SAME

Title (de)

SPIRALFÖRMIGER ROLLENBOHRMEISSEL UND TUNNELBOHRMASCHINE BESTÜCKT DAMIT

Title (fr)

ORGANE CYLINDRIQUE DE COUPE A SPIRALES ET TETE DE COUPE POUR FOREUSE DE GALERIE LE COMPORTANT

Publication

EP 0915231 A4 (EN)

Application

EP 97930849 A

Priority

  • JP 9702512 W
  • JP 21058096 A

Abstract (en)

[origin: WO9803772A1] 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.

IPC 1-7 (main, further and additional classification)

E21D 9/08; E21B 10/10; E21B 10/16; E21D 9/06; E21D 9/10

IPC 8 full level (invention and additional information)

E21D 9/06 (2006.01); E21B 10/16 (2006.01); E21B 29/10 (2006.01); E21D 9/10 (2006.01)

CPC (invention and additional information)

E21B 29/10 (2013.01); E21B 10/16 (2013.01); E21D 9/104 (2013.01)

Citation (search report)

  • No further relevant documents disclosed
  • See also references of WO 9803772A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 9803772 A1 19980129; EP 0915231 A1 19990512; EP 0915231 A4 20001115; JP H1037680 A 19980210

INPADOC legal status


2004-06-30 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20031223

2002-11-06 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20020919

2000-11-15 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20001005

2000-11-15 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB

2000-11-15 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- Free Format Text: 7E 21D 9/08 A, 7E 21D 9/06 B, 7E 21B 10/10 B, 7E 21B 10/16 B, 7E 21D 9/10 B

1999-05-12 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19990106

1999-05-12 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB