DE293938C - - Google Patents
Info
- Publication number
- DE293938C DE293938C DENDAT293938D DE293938DA DE293938C DE 293938 C DE293938 C DE 293938C DE NDAT293938 D DENDAT293938 D DE NDAT293938D DE 293938D A DE293938D A DE 293938DA DE 293938 C DE293938 C DE 293938C
- Authority
- DE
- Germany
- Prior art keywords
- clamping
- clamp
- close
- similar
- held together
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000284 resting effect Effects 0.000 claims 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
- E21D15/14—Telescopic props
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/32—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring
- E21D15/325—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring by a clamping ring
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)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Securing Of Glass Panes Or The Like (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE293938C true DE293938C (fr) |
Family
ID=548556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT293938D Active DE293938C (fr) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE293938C (fr) |
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0
- DE DENDAT293938D patent/DE293938C/de active Active
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