BE485770A - - Google Patents
Info
- Publication number
- BE485770A BE485770A BE485770DA BE485770A BE 485770 A BE485770 A BE 485770A BE 485770D A BE485770D A BE 485770DA BE 485770 A BE485770 A BE 485770A
- Authority
- BE
- Belgium
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
- E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB76549A GB706762A (en) | 1949-01-11 | 1949-01-11 | Improvements in or relating to connecting means for caps used in mining, more particularly for pivot-jointed steel caps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE485770A true BE485770A (en) |
Family
ID=9710135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE485770D BE485770A (en) | 1949-01-11 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE485770A (en) |
| FR (1) | FR955232A (en) |
| GB (1) | GB706762A (en) |
| NL (1) | NL72525C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1122915B (en) * | 1952-06-16 | 1962-02-01 | Gerlach Karl | Swivel cap for pit construction |
| DE938366C (en) * | 1952-06-18 | 1956-01-26 | Ernst Tosch | Articulated cap for rigid pre-connecting |
| US5380117A (en) * | 1989-06-16 | 1995-01-10 | Buschulte; Joachim | Apparatus for the detachable coupling of gripping devices or corresponding tools on robot arms |
| CN114701596A (en) * | 2022-04-06 | 2022-07-05 | 奕江山环境科技(北京)有限公司 | Floating island flexible connecting piece |
-
0
- NL NL72525D patent/NL72525C/xx active
- FR FR955232D patent/FR955232A/fr not_active Expired
- BE BE485770D patent/BE485770A/xx unknown
-
1949
- 1949-01-11 GB GB76549A patent/GB706762A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL72525C (en) | |
| FR955232A (en) | 1950-01-11 |
| GB706762A (en) | 1954-04-07 |