BE491088R - - Google Patents
Info
- Publication number
- BE491088R BE491088R BE491088A BE491088A BE491088R BE 491088 R BE491088 R BE 491088R BE 491088 A BE491088 A BE 491088A BE 491088 A BE491088 A BE 491088A BE 491088 R BE491088 R BE 491088R
- Authority
- BE
- Belgium
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D15/38—Telescopic props with parts held relatively to each other by friction or gripping with longitudinally-divided upper or lower prop parts, e.g. interfitting laminations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/58—Devices for setting props or chocks
- E21D15/581—Devices for setting props or chocks in which the props are pre- loaded
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Clamps And Clips (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1004600X | 1949-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE491088R true BE491088R (ro) | 1949-09-30 |
Family
ID=7656555
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE491065A BE491065A (ro) | 1949-03-04 | 1949-09-10 | |
| BE491088A BE491088R (ro) | 1949-03-04 | 1949-09-13 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE491065A BE491065A (ro) | 1949-03-04 | 1949-09-10 |
Country Status (2)
| Country | Link |
|---|---|
| BE (2) | BE491065A (ro) |
| FR (1) | FR1004600A (ro) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE975699C (de) * | 1950-03-16 | 1962-05-30 | Niederlaendischer Staat | Nachgiebiger metallener Grubenstempel |
-
1949
- 1949-07-27 FR FR1004600D patent/FR1004600A/fr not_active Expired
- 1949-09-10 BE BE491065A patent/BE491065A/fr unknown
- 1949-09-13 BE BE491088A patent/BE491088R/fr active
Also Published As
| Publication number | Publication date |
|---|---|
| BE491065A (ro) | 1949-09-30 |
| FR1004600A (fr) | 1952-03-31 |