DE253974C - - Google Patents
Info
- Publication number
- DE253974C DE253974C DENDAT253974D DE253974DA DE253974C DE 253974 C DE253974 C DE 253974C DE NDAT253974 D DENDAT253974 D DE NDAT253974D DE 253974D A DE253974D A DE 253974DA DE 253974 C DE253974 C DE 253974C
- Authority
- DE
- Germany
- Prior art keywords
- plunger
- marked
- sheet
- arrangement
- pipe
- 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
- 150000001875 compounds Chemical class 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
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
- E21D15/18—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with one part resting on a supporting medium, e.g. rubber, sand, bitumen, lead, located in the other part, with or without expulsion or displacement of the medium upon excessive pressure
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)
- Injection Moulding Of Plastics Or The Like (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE253974C true DE253974C (cg-RX-API-DMAC7.html) |
Family
ID=512205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT253974D Active DE253974C (cg-RX-API-DMAC7.html) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE253974C (cg-RX-API-DMAC7.html) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4322662A1 (de) * | 1993-07-07 | 1995-01-12 | Max Homeier | Dunstabzugshaubenanordnung |
-
0
- DE DENDAT253974D patent/DE253974C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4322662A1 (de) * | 1993-07-07 | 1995-01-12 | Max Homeier | Dunstabzugshaubenanordnung |
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