EP 1083293 B1 20051102 - Drilling tool
Title (en)
Drilling tool
Title (de)
Bohrwerkzeug
Title (fr)
Outil de forage
Publication
Application
Priority
DE 19942986 A 19990909
Abstract (en)
[origin: EP1083293A1] The drilling tool has a shaft (2) with a drill head (4) with at least two cutters (5) of hard metal. The cutters project radially from the edge of the drill head and have dust grooves (7) at least partly between them, which open into at least one spiral conveying groove (3) along the shaft. The bore head has an expanded peripheral contour (8) at least in the area of two of the cutters, which projects radially over the edge (9) of the shaft.
IPC 1-7
IPC 8 full level
B23B 51/00 (2006.01); B28D 1/14 (2006.01); E21B 10/40 (2006.01); E21B 10/44 (2006.01); E21B 10/58 (2006.01)
CPC (source: EP US)
E21B 10/40 (2013.01 - EP US); E21B 10/445 (2013.01 - EP US); E21B 10/58 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB LI NL
DOCDB simple family (publication)
EP 1083293 A1 20010314; EP 1083293 B1 20051102; CN 1156641 C 20040707; CN 1287898 A 20010321; DE 19942986 A1 20010315; DE 50011494 D1 20051208; JP 2001121331 A 20010508; US 6405813 B1 20020618; ZA 200004375 B 20010228
DOCDB simple family (application)
EP 00810739 A 20000821; CN 00126325 A 20000904; DE 19942986 A 19990909; DE 50011494 T 20000821; JP 2000275250 A 20000911; US 65890000 A 20000911; ZA 200004375 A 20000824