BE500611A - - Google Patents
Info
- Publication number
- BE500611A BE500611A BE500611DA BE500611A BE 500611 A BE500611 A BE 500611A BE 500611D A BE500611D A BE 500611DA BE 500611 A BE500611 A BE 500611A
- 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)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP56413A DE829436C (de) | 1949-09-30 | 1949-09-30 | Stahlkappenverbindung fuer den Strebausbau im Grubenbetrieb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE500611A true BE500611A (fr) |
Family
ID=7388420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE500611D BE500611A (fr) | 1949-09-30 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE500611A (fr) |
| DE (1) | DE829436C (fr) |
| NL (1) | NL74988C (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2991097A (en) * | 1948-07-08 | 1961-07-04 | Vanwersch Aloys | Connecting structure for beams of a roof support or the like |
| DE1097388B (de) * | 1952-05-29 | 1961-01-19 | Aloys Vanwersch | Kappenverbindung fuer den Strebausbau |
-
0
- NL NL74988D patent/NL74988C/xx active
- BE BE500611D patent/BE500611A/xx unknown
-
1949
- 1949-09-30 DE DEP56413A patent/DE829436C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE829436C (de) | 1952-01-24 |
| NL74988C (fr) |