BE664853A - - Google Patents
Info
- Publication number
- BE664853A BE664853A BE664853DA BE664853A BE 664853 A BE664853 A BE 664853A BE 664853D A BE664853D A BE 664853DA BE 664853 A BE664853 A BE 664853A
- Authority
- BE
- Belgium
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/0213—Assembling devices for pivoting caps upwardly
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
- E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV26100A DE1207319B (en) | 1964-06-06 | 1964-06-06 | Cap connection for pit construction in underground operations |
| DEV28346A DE1220370B (en) | 1964-06-06 | 1965-04-28 | Cap connection for pit construction in underground operations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE664853A true BE664853A (en) | 1965-10-01 |
Family
ID=26001768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE664853D BE664853A (en) | 1964-06-06 | 1965-06-03 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE664853A (en) |
| DE (1) | DE1220370B (en) |
| FR (1) | FR1435672A (en) |
| GB (2) | GB1083217A (en) |
-
1964
- 1964-11-18 GB GB4702164A patent/GB1083217A/en not_active Expired
-
1965
- 1965-04-28 DE DEV28346A patent/DE1220370B/en active Pending
- 1965-06-03 BE BE664853D patent/BE664853A/xx unknown
- 1965-06-04 GB GB2401865A patent/GB1083218A/en not_active Expired
- 1965-06-04 FR FR19737A patent/FR1435672A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1083218A (en) | 1967-09-13 |
| DE1220370B (en) | 1966-07-07 |
| FR1435672A (en) | 1966-04-15 |
| GB1083217A (en) | 1967-09-13 |