BE537573A - - Google Patents
Info
- Publication number
- BE537573A BE537573A BE537573DA BE537573A BE 537573 A BE537573 A BE 537573A BE 537573D A BE537573D A BE 537573DA BE 537573 A BE537573 A BE 537573A
- Authority
- BE
- Belgium
- Prior art keywords
- lock
- corner
- punch
- inner corner
- support
- Prior art date
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
- E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations
-
- 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
- E21D15/40—Collar or other support gripped to one or both parts by toggle-action, cam, or other member pivoted or similarly mounted
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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE537573A true BE537573A (en:Method) |
Family
ID=167888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE537573D BE537573A (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE537573A (en:Method) |
-
0
- BE BE537573D patent/BE537573A/fr unknown
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