EP 0862678 B1 20000105 - DRILL BIT
Title (en)
DRILL BIT
Title (de)
BOHRKRONE
Title (fr)
COURONNE DE FLEURET
Publication
Application
Priority
- AT 9600234 W 19961122
- AT 64195 U 19951123
Abstract (en)
[origin: WO9719247A1] Described is a drill bit (1), in particulare a bit for a percussion or rotary-percussion drill, the tip of the bit having cutting edges (3, 4) designed to detach and/or break up the material to be removed, at least one cutting edge (4) running in a curve radially across the face (2) of the bit. The invention calls for at least one additional, straight, cutting edge (3) located on the convex side of the curved cutting edge (4).
IPC 1-7
IPC 8 full level
E21B 10/36 (2006.01)
CPC (source: EP)
E21B 10/36 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FI FR GB GR IT LI NL PT SE
DOCDB simple family (publication)
WO 9719247 A1 19970529; AT 1513 U1 19970625; AT E188535 T1 20000115; AU 7684996 A 19970611; CZ 155998 A3 19980916; CZ 290060 B6 20020515; DE 59604134 D1 20000210; EP 0862678 A1 19980909; EP 0862678 B1 20000105; ES 2143244 T3 20000501; GR 3033073 T3 20000831; PL 180429 B1 20010228; PL 326764 A1 19981026; PT 862678 E 20000630
DOCDB simple family (application)
AT 9600234 W 19961122; AT 64195 U 19951123; AT 96939744 T 19961122; AU 7684996 A 19961122; CZ 155998 A 19961122; DE 59604134 T 19961122; EP 96939744 A 19961122; ES 96939744 T 19961122; GR 20000400762 T 20000327; PL 32676496 A 19961122; PT 96939744 T 19961122