EP 0607958 B1 19980819 - Rock drill bit
Title (en)
Rock drill bit
Title (de)
Gesteinsbohrer
Title (fr)
Trépan de roche
Publication
Application
Priority
DE 4301708 A 19930122
Abstract (en)
[origin: EP0607958A1] In a rock drill bit (10), at least one secondary cutting tip (20, 22) is provided in addition to a main cutting tip (16). The secondary cutting tip (20, 22) extends essentially parallel to and in particular at a slight angle to the main cutting tip and is arranged offset from the main cutting tip. <IMAGE>
IPC 1-7
IPC 8 full level
E21B 10/58 (2006.01)
CPC (source: EP)
E21B 10/58 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK FR GB LI NL
DOCDB simple family (publication)
EP 0607958 A1 19940727; EP 0607958 B1 19980819; AT E169987 T1 19980915; DE 4301708 A1 19940728; DE 4301708 C2 20021031; DE 59406700 D1 19980924; DK 0607958 T3 19981026
DOCDB simple family (application)
EP 94100784 A 19940120; AT 94100784 T 19940120; DE 4301708 A 19930122; DE 59406700 T 19940120; DK 94100784 T 19940120