BE502815A - - Google Patents
Info
- Publication number
- BE502815A BE502815A BE502815DA BE502815A BE 502815 A BE502815 A BE 502815A BE 502815D A BE502815D A BE 502815DA BE 502815 A BE502815 A BE 502815A
- Authority
- BE
- Belgium
- Prior art keywords
- teeth
- upright
- prop
- housing
- face
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims description 7
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 2
- 230000000295 complement effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
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
- E21D15/50—Component parts or details of props
- E21D15/56—Details of locks of telescopic props
-
- 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
- E21D15/42—Telescopic props with parts held relatively to each other by friction or gripping with special parts to influence the friction
-
- 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
- E21D15/5817—Devices for setting props or chocks in which the props are pre- loaded in which the lock is also activated
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)
- Sliding-Contact Bearings (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE502815A true BE502815A (enEXAMPLES) |
Family
ID=144210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE502815D BE502815A (enEXAMPLES) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE502815A (enEXAMPLES) |
-
0
- BE BE502815D patent/BE502815A/fr unknown
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