DE207303C - - Google Patents
Info
- Publication number
- DE207303C DE207303C DENDAT207303D DE207303DA DE207303C DE 207303 C DE207303 C DE 207303C DE NDAT207303 D DENDAT207303 D DE NDAT207303D DE 207303D A DE207303D A DE 207303DA DE 207303 C DE207303 C DE 207303C
- Authority
- DE
- Germany
- Prior art keywords
- core
- wedge
- pieces
- parts
- jacket
- 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
- 230000008602 contraction Effects 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/86—Cores
- B28B21/88—Cores adjustable, collapsible or expansible
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE207303C true DE207303C (cs) |
Family
ID=469410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT207303D Active DE207303C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE207303C (cs) |
-
0
- DE DENDAT207303D patent/DE207303C/de active Active
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