Global patent index - EP 1084324 A1

EP 1084324 A1 2001-03-21 - ROLLER BIT FOR TUNNEL-BORING MACHINES HAVING REPLACEABLE BIT POINTS

Title (en)

ROLLER BIT FOR TUNNEL-BORING MACHINES HAVING REPLACEABLE BIT POINTS

Title (de)

ROLLENMEISSEL FÜR TUNNELVORTRIEBSMASCHINEN MIT AUSWECHSELBAREN MEISSELSTIFTEN

Title (fr)

TREPAN A MOLETTES POUR MACHINES DE CREUSEMENT DE TUNNEL A POINTES DE TREPAN REMPLA ABLES

Publication

EP 1084324 A1 (DE)

Application

EP 99924927 A

Priority

  • DE 19821390 A
  • EP 9903202 W

Abstract (en)

[origin: DE19821390A1] The segments (2) of the cutting ring (1) are arranged in specific position on the roller basic body by means of a profile connection, e.g. a dovetail guide and adjustment springs. The segments of the cutting ring are connected with the roller basic body by screwable segment retainers. The segments can also be connected with the roller basic body by clamp nuts. The cutting components (3) are formed as chisels with a head and a shaft (11), the shaft being held in a recess (12) of the cutting ring, shaft and recess being provided with matching threads.

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

E21B 10/12; E21B 10/10; E21B 10/20; E21B 10/52

IPC 8 full level (invention and additional information)

E21B 10/10 (2006.01); E21B 10/12 (2006.01); E21B 10/20 (2006.01); E21B 10/52 (2006.01); E21D 9/10 (2006.01)

CPC (invention and additional information)

E21B 10/52 (2013.01); E21B 10/10 (2013.01); E21B 10/20 (2013.01)

Citation (search report)

See references of WO 9958808A1

Designated contracting state (EPC)

AT CH DE FR IT LI

EPO simple patent family

DE 19821390 A1 19991125; AU 4141199 A 19991129; EP 1084324 A1 20010321; JP 2002514702 A 20020521; WO 9958808 A1 19991118; ZA 9903212 B 20020812

INPADOC legal status

2003-10-22 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030416

2001-03-21 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001128

2001-03-21 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT CH DE FR IT LI