BE521312A - - Google Patents
Info
- Publication number
- BE521312A BE521312A BE521312DA BE521312A BE 521312 A BE521312 A BE 521312A BE 521312D A BE521312D A BE 521312DA BE 521312 A BE521312 A BE 521312A
- 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 |
|---|---|---|---|
| DEG10833A DE952976C (en) | 1953-01-28 | 1953-01-28 | Swivel jointed cup irons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE521312A true BE521312A (en) | 1953-07-31 |
Family
ID=6662586
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE521312D BE521312A (en) | 1953-01-28 | 1953-07-09 | |
| BE525927D BE525927A (en) | 1953-01-28 | 1954-01-22 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE525927D BE525927A (en) | 1953-01-28 | 1954-01-22 |
Country Status (4)
| Country | Link |
|---|---|
| BE (2) | BE521312A (en) |
| DE (1) | DE952976C (en) |
| FR (2) | FR1077402A (en) |
| GB (1) | GB760604A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE199149C (en) * | 1954-01-29 | |||
| US2997319A (en) * | 1958-04-22 | 1961-08-22 | Schwarz Kg Hermann | Cap unit for use in connection with mining |
| DE1198310B (en) * | 1958-05-30 | 1965-08-12 | Aloys Vanwersch | Expansion cap for mining operations |
| DE1214184B (en) * | 1958-05-30 | 1966-04-14 | Ludwig Vanwersch | Securing device for wedges and hinge pins of expansion caps |
| DE1243128B (en) * | 1963-09-25 | 1967-06-29 | Aloys Vanwersch | Cap connection for Vorpfaendkappen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE804317C (en) * | 1949-03-22 | 1951-04-19 | Otto Leppak | Process for creating a stamp-free mining front in iron longwall construction |
-
1953
- 1953-01-28 DE DEG10833A patent/DE952976C/en not_active Expired
- 1953-05-18 FR FR1077402D patent/FR1077402A/en not_active Expired
- 1953-07-09 BE BE521312D patent/BE521312A/xx unknown
-
1954
- 1954-01-12 GB GB86154A patent/GB760604A/en not_active Expired
- 1954-01-19 FR FR1094700D patent/FR1094700A/fr not_active Expired
- 1954-01-22 BE BE525927D patent/BE525927A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE952976C (en) | 1956-11-22 |
| FR1094700A (en) | 1955-05-23 |
| FR1077402A (en) | 1954-11-08 |
| BE525927A (en) | 1954-02-15 |
| GB760604A (en) | 1956-11-07 |