DE235427C - - Google Patents
Info
- Publication number
- DE235427C DE235427C DENDAT235427D DE235427DA DE235427C DE 235427 C DE235427 C DE 235427C DE NDAT235427 D DENDAT235427 D DE NDAT235427D DE 235427D A DE235427D A DE 235427DA DE 235427 C DE235427 C DE 235427C
- Authority
- DE
- Germany
- Prior art keywords
- sleeve band
- air
- ducts
- weather
- band
- 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
- 239000004744 fabric Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000037303 wrinkles Effects 0.000 claims description 2
- 239000003351 stiffener Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 3
- 235000000396 iron Nutrition 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
- E21F1/06—Duct connections
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Duct Arrangements (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE235427C true DE235427C (https=) |
Family
ID=495201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT235427D Active DE235427C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE235427C (https=) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE965485C (de) * | 1951-05-26 | 1957-06-13 | Hans Georg Schauenburg | Harmonika-artig faltbare Wetterlutte |
-
0
- DE DENDAT235427D patent/DE235427C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE965485C (de) * | 1951-05-26 | 1957-06-13 | Hans Georg Schauenburg | Harmonika-artig faltbare Wetterlutte |
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