EP 0036449 B1 19841212 - TROUGH SECTIONS FOR MINE SUPPORTS

Title (en)

TROUGH SECTIONS FOR MINE SUPPORTS

Publication

EP 0036449 B1 19841212 (DE)

Application

EP 80107969 A 19801217

Priority

DE 3011119 A 19800322

Abstract (en)

[origin: EP0036449A1] 1. Channel profile member for relatively-displaceable yieldable mine arch supports, with a strengthened base (3) and curved side webs (4), which run into outwardly-directed flanges (5) having a central thickness (52) which corresponds to 0.9 to 1.1 times the base thickness (31) and a central height (51) which corresponds to 1.25 to 1.50 times the base thickness (31), the base (3) being flattened externally, characterized in that the minimum web thickness (41) at the flanges (5) corresponds to 0.30 to 0.35 times the base thickness (31) and the base (3) is flattened externally to have, at a maximum, a width (32) corresponding to the base thickness (31) and the full width (23) of the profile member amounts to 0.9 to 1.1 times the full profile height (22).

IPC 1-7

E21D 11/20; E21D 11/18

IPC 8 full level

E21D 11/18 (2006.01); E21D 11/20 (2006.01)

CPC (source: EP)

E21D 11/18 (2013.01); E21D 11/20 (2013.01)

Citation (examination)

DE 1166121 B 19640326 - BOCHUMER EISEN HEINTZMANN
DE 960532 C 19570321 - BOCHUMER EISEN HEINTZMANN
FR 63275 E 19550912 - BOCHUMER EISEN HEINTZMANN
DE 2538697 A1 19770310 - EISENHUETTE PRINZ RUDOLPH AG
DE 975869 C 19621108 - BOCHUMER EISEN HEINTZMANN
DE 1010031 B 19570613 - BERGBAUSTAHL GMBH & CO

Designated contracting state (EPC)

BE FR GB LU

DOCDB simple family (publication)

EP 0036449 A1 19810930; EP 0036449 B1 19841212; DE 3011119 A1 19811001; DE 3011119 C2 19850221; ES 265207 U 19821201; ES 265207 Y 19830616; JP S56143000 A 19811107; PL 229417 A1 19811002; YU 12581 A 19831031; YU 41758 B 19871231; ZA 811852 B 19820428

DOCDB simple family (application)

EP 80107969 A 19801217; DE 3011119 A 19800322; ES 265207 U 19810119; JP 3969681 A 19810320; PL 22941781 A 19810128; YU 12581 A 19810119; ZA 811852 A 19810319