EP 0304421 B1 19920715 - OPEN-CUT MINING CUTTER
Title (en)
OPEN-CUT MINING CUTTER
Publication
Application
Priority
- DE 3611580 A 19860407
- DE 3621420 A 19860625
Abstract (en)
[origin: US4960306A] PCT No. PCT/EP87/00185 Sec. 371 Date Oct. 7, 1988 Sec. 102(e) Date Oct. 7, 1988 PCT Filed Apr. 4, 1987 PCT Pub. No. WO87/06301 PCT Pub. Date Oct. 22, 1987.The present invention provides a crawler unit having a superstructure and a substructure and an excavating device for recovering bulk material. The excavating device has bearing regions and drive regions and also has vertically arranged shearing drums for cutting free the bearing and drive regions. The shearing drums have upper ends which are inclined obliquely forward.
IPC 1-7
IPC 8 full level
E21C 27/00 (2006.01); E21C 47/00 (2006.01)
IPC 8 main group level
CPC (source: EP US)
E21C 27/00 (2013.01 - EP US); E21C 47/00 (2013.01 - EP US)
Citation (examination)
GB 2163797 A 19860305 - VOEST ALPINE AG
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
US 4960306 A 19901002; AT E78319 T1 19920815; AU 591283 B2 19891130; AU 7282287 A 19871109; CA 1261888 A 19890926; DE 3621420 C1 19871029; DE 3780462 D1 19920820; EP 0304421 A1 19890301; EP 0304421 B1 19920715; IN 165473 B 19891028; WO 8706301 A1 19871022; ZA 872486 B 19871125
DOCDB simple family (application)
US 27275088 A 19881007; AT 87902484 T 19870404; AU 7282287 A 19870404; CA 534057 A 19870407; DE 3621420 A 19860625; DE 3780462 T 19870404; EP 8700185 W 19870404; EP 87902484 A 19870404; IN 280CA1987 A 19870407; ZA 872486 A 19870407