BE497570A - - Google Patents
Info
- Publication number
- BE497570A BE497570A BE497570DA BE497570A BE 497570 A BE497570 A BE 497570A BE 497570D A BE497570D A BE 497570DA BE 497570 A BE497570 A BE 497570A
- Authority
- BE
- Belgium
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/43—Details of wedges
-
- 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE699297X | 1948-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE497570A true BE497570A (en) | 1950-12-01 |
Family
ID=6608398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE497570D BE497570A (en) | 1948-10-01 | 1950-08-14 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE497570A (en) |
| FR (1) | FR983542A (en) |
| GB (1) | GB699297A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE938006C (en) * | 1954-02-09 | 1956-01-19 | Wilhelm Reppel | Caps designed to be lined up for pit lining, especially for longwall mining |
| US3179447A (en) * | 1960-06-27 | 1965-04-20 | Fairchild Camera Instr Co | Limited movement hinge connection |
| DE7033832U (en) * | 1970-09-11 | 1971-01-28 | Gewerk Eisenhuette Westfalia | HINGED CAP FOR HIKING EXTENSION OF MOUNTAIN MINE EXTRACTIONS. |
| CN112962955B (en) * | 2021-02-24 | 2022-07-22 | 重庆拓达建设（集团）有限公司 | Kitchen and bathroom concrete waterproof guide wall pouring template and construction method |
-
1949
- 1949-02-03 FR FR983542D patent/FR983542A/en not_active Expired
-
1950
- 1950-08-11 GB GB20019/50A patent/GB699297A/en not_active Expired
- 1950-08-14 BE BE497570D patent/BE497570A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB699297A (en) | 1953-11-04 |
| FR983542A (en) | 1951-06-25 |