FR632897A - - Google Patents
Info
- Publication number
- FR632897A FR632897A FR632897DA FR632897A FR 632897 A FR632897 A FR 632897A FR 632897D A FR632897D A FR 632897DA FR 632897 A FR632897 A FR 632897A
- Authority
- FR
- France
- 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.)
- Expired
Links
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)
- Portable Nailing Machines And Staplers (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Clamps And Clips (AREA)
- Braking Arrangements (AREA)
- Emergency Lowering Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE333312A BE333312A (pt) | 1926-04-16 | 1926-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR632897A true FR632897A (pt) | 1928-01-16 |
Family
ID=12101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR632897D Expired FR632897A (pt) | 1926-04-16 | 1927-04-15 |
Country Status (4)
| Country | Link |
|---|---|
| BE (2) | BE333312A (pt) |
| DE (1) | DE507981C (pt) |
| FR (1) | FR632897A (pt) |
| GB (1) | GB269571A (pt) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2890854A (en) * | 1956-01-09 | 1959-06-16 | Gutehoffnungshuette Sterkrade | Torsion pit prop |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2890854A (en) * | 1956-01-09 | 1959-06-16 | Gutehoffnungshuette Sterkrade | Torsion pit prop |
Also Published As
| Publication number | Publication date |
|---|---|
| DE507981C (de) | 1930-09-22 |
| BE333312A (pt) | 1926-05-31 |
| GB269571A (en) | 1927-08-04 |
| BE335281R (pt) | 1926-08-31 |