EP 0468230 A3 19921125 - A MILL OR OTHER METAL CUTTING TOOL
Title (en)
A MILL OR OTHER METAL CUTTING TOOL
Publication
Application
Priority
GB 9016311 A 19900725
Abstract (en)
[origin: EP0468230A2] A metal cutting tool is made by taking a plate of hard metal carbide, and crushing the plate to form a mosaic consisting of a plurality of irregularly sized and irregularly shaped platelettes. The platelettes, in the form of a mosaic, are secured to a support surface. The support surface may form a blade protruding radially from a body which forms a mill to cut casing in a well bore. <IMAGE>
IPC 1-7
IPC 8 full level
E21B 29/00 (2006.01)
CPC (source: EP)
E21B 29/002 (2013.01)
Citation (search report)
- [AP] EP 0392519 A2 19901017 - MITSUBISHI METAL CORP [JP]
- [A] US 2846193 A 19580805 - JACK CHADDERDON
- [A] US 3110084 A 19631112 - KINZBACH ROBERT B
Designated contracting state (EPC)
AT DE DK ES FR GB GR IT NL SE
DOCDB simple family (publication)
EP 0468230 A2 19920129; EP 0468230 A3 19921125; GB 9016311 D0 19900912; NO 912791 D0 19910716; NO 912791 L 19920127
DOCDB simple family (application)
EP 91110886 A 19910701; GB 9016311 A 19900725; NO 912791 A 19910716