BE335281R - - Google Patents
Info
- Publication number
- BE335281R BE335281R BE335281A BE335281A BE335281R BE 335281 R BE335281 R BE 335281R BE 335281 A BE335281 A BE 335281A BE 335281 A BE335281 A BE 335281A BE 335281 R BE335281 R BE 335281R
- Authority
- BE
- Belgium
- Prior art keywords
- foot
- movable head
- props
- prop
- head
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000000750 progressive effect Effects 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 22
- 229910052742 iron Inorganic materials 0.000 description 11
- 230000008901 benefit Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 244000182067 Fraxinus ornus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21D15/14—Telescopic props
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Clamps And Clips (AREA)
- Braking Arrangements (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Emergency Lowering Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE333312A BE333312A (sv) | 1926-04-16 | 1926-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE335281R true BE335281R (sv) | 1926-08-31 |
Family
ID=12101
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE333312A BE333312A (sv) | 1926-04-16 | 1926-04-16 | |
| BE335281A BE335281R (sv) | 1926-04-16 | 1929-07-20 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE333312A BE333312A (sv) | 1926-04-16 | 1926-04-16 |
Country Status (4)
| Country | Link |
|---|---|
| BE (2) | BE333312A (sv) |
| DE (1) | DE507981C (sv) |
| FR (1) | FR632897A (sv) |
| GB (1) | GB269571A (sv) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2890854A (en) * | 1956-01-09 | 1959-06-16 | Gutehoffnungshuette Sterkrade | Torsion pit prop |
| US20070261338A1 (en) * | 2006-05-12 | 2007-11-15 | Mccracken Robert | Spring assembly for reshore posts |
-
1926
- 1926-04-16 BE BE333312A patent/BE333312A/fr unknown
- 1926-05-29 DE DEP52969D patent/DE507981C/de not_active Expired
-
1927
- 1927-04-13 GB GB10222/27A patent/GB269571A/en not_active Expired
- 1927-04-15 FR FR632897D patent/FR632897A/fr not_active Expired
-
1929
- 1929-07-20 BE BE335281A patent/BE335281R/fr active
Also Published As
| Publication number | Publication date |
|---|---|
| GB269571A (en) | 1927-08-04 |
| BE333312A (sv) | 1926-05-31 |
| DE507981C (de) | 1930-09-22 |
| FR632897A (sv) | 1928-01-16 |
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