BE579173A - - Google Patents
Info
- Publication number
- BE579173A BE579173A BE579173DA BE579173A BE 579173 A BE579173 A BE 579173A BE 579173D A BE579173D A BE 579173DA BE 579173 A BE579173 A BE 579173A
- Authority
- BE
- Belgium
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV14483A DE1198310B (en) | 1958-05-30 | 1958-05-30 | Expansion cap for mining operations |
| DEV14768A DE1224252B (en) | 1958-05-30 | 1958-07-25 | Expansion cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE579173A true BE579173A (en) |
Family
ID=26001295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE579173D BE579173A (en) | 1958-05-30 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3091088A (en) |
| BE (1) | BE579173A (en) |
| DE (1) | DE1224252B (en) |
| FR (1) | FR1230085A (en) |
| GB (1) | GB845976A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1140890B (en) * | 1960-06-11 | 1962-12-13 | Karl Maria Groetschel Dipl Ing | Vorpfaendkappe, in particular Vorpfaendwendekappe |
| US4676970A (en) * | 1985-05-14 | 1987-06-30 | Elkem Metals Company | Method for producing metal sulfide and the product produced therefrom |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL80173C (en) * | ||||
| GB722202A (en) * | 1951-11-13 | 1955-01-19 | Josef Brand | Improvements in lagging members for mine galleries and the like |
| GB774109A (en) * | 1953-04-21 | 1957-05-08 | Eisenwerk Wanheim Gmbh | Improvements in or relating to mine roof support assemblies |
| AT199149B (en) * | 1954-01-29 | 1958-08-11 | Karl Maria Dipl Ing Groetschel | Connection for shell iron for pit lining |
-
0
- BE BE579173D patent/BE579173A/xx unknown
-
1958
- 1958-07-25 DE DEV14768A patent/DE1224252B/en active Pending
-
1959
- 1959-05-29 GB GB18471/59A patent/GB845976A/en not_active Expired
- 1959-05-30 FR FR796165A patent/FR1230085A/en not_active Expired
- 1959-07-23 US US828985A patent/US3091088A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE1224252B (en) | 1966-09-08 |
| FR1230085A (en) | 1960-09-13 |
| GB845976A (en) | 1960-08-24 |
| US3091088A (en) | 1963-05-28 |