EP 0516581 B1 19980715 - Drilling and chiselling tool with basic body and cutting element
Title (en)
Drilling and chiselling tool with basic body and cutting element
Title (de)
Bohr- und Meisselwerkzeug mit Grundkörper und Schneidkörper
Title (fr)
Outil de forage et de burinage avec corps de base et élément de coupe
Publication
Application
Priority
DE 4114271 A 19910502
Abstract (en)
[origin: JPH05124027A] PURPOSE: To provide a drill and chisel tool in which the life of the whole tool is improved by eliminating overload of various parts in operation. CONSTITUTION: The drill and chisel tool which has a steel base 1 has a welded joint 4 which secures a cutting tool 2 made of hard alloy in the recess 3. The cutting tool 2 is secured at the base 1 in such manner as to avoid generation of the peak value of shearing stress at the edge region of the recess 3. For this purpose, a stress relief notch is provided, and the thickness of the welded joint 4 is increased toward the end.
IPC 1-7
IPC 8 full level
B28D 1/14 (2006.01); B25D 17/02 (2006.01); E21B 10/58 (2006.01)
CPC (source: EP US)
E21B 10/58 (2013.01 - EP US); Y10T 408/909 (2015.01 - EP US)
Citation (examination)
- DE 765003 C 19531026 - WALLRAM HARTMETALLWERK, et al
- US 2101376 A 19371207 - HERMANN VOIGTLANDER
- FR 1414023 A 19651015 - FORGES & ATELIERS DU SAUT DU T
- DE 2802119 A1 19780803 - BOART INT LTD
- FR 1006219 A 19520421
- DE 671959 C 19390217 - MEUTSCH VOIGTLAENDER & CO VORM
- CH 272188 A 19501215 - SANDVIKENS JERNVERKS AB [SE]
- FR 981182 A 19510523 - SANDVIKENS JERNVERKS AB
- US 4181187 A 19800101 - LUMEN KARL L G [SE]
Designated contracting state (EPC)
CH DE DK FR GB LI SE
DOCDB simple family (publication)
EP 0516581 A2 19921202; EP 0516581 A3 19930707; EP 0516581 B1 19980715; DE 4114271 A1 19921105; DE 59209416 D1 19980820; DK 0516581 T3 19990419; JP 3426614 B2 20030714; JP H05124027 A 19930521; US 5265989 A 19931130
DOCDB simple family (application)
EP 92810283 A 19920416; DE 4114271 A 19910502; DE 59209416 T 19920416; DK 92810283 T 19920416; JP 11283492 A 19920501; US 87506592 A 19920428