NL68832C - - Google Patents
Info
- Publication number
- NL68832C NL68832C NL68832DA NL68832C NL 68832 C NL68832 C NL 68832C NL 68832D A NL68832D A NL 68832DA NL 68832 C NL68832 C NL 68832C
- Authority
- NL
- Netherlands
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
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)
- Tents Or Canopies (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR652701X | 1947-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL68832C true NL68832C (de) |
Family
ID=9005391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL68832D NL68832C (de) | 1947-03-20 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2554210A (de) |
| BE (1) | BE481299A (de) |
| DE (1) | DE808581C (de) |
| FR (4) | FR58703E (de) |
| GB (1) | GB652701A (de) |
| NL (1) | NL68832C (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2991097A (en) * | 1948-07-08 | 1961-07-04 | Vanwersch Aloys | Connecting structure for beams of a roof support or the like |
| DE977123C (de) * | 1948-07-30 | 1965-03-11 | Karl Gerlach | Gelenkverbindung fuer unter der Wirkung einer Spannvorrichtung verschwenkbare Kappen fuer den Grubenausbau |
| US2729945A (en) * | 1949-03-09 | 1956-01-10 | Gerlach Karl | Mine filling frame structure comprising props and pivotally connected girders |
| US2749712A (en) * | 1949-11-25 | 1956-06-12 | Gerlach Karl | Mine supporting structure for working mines |
| FR1130143A (fr) * | 1955-07-27 | 1957-01-31 | Rallonge articulée pour supports de mines | |
| US3107902A (en) * | 1958-12-29 | 1963-10-22 | Joy Mfg Co | Method of supporting mine roofs and supporting means therefor |
| DE1169881B (de) * | 1960-09-09 | 1964-05-14 | Hermann Schwarz Kommanditgesel | In der Laengsrichtung in mehrere im wesentlichen gleiche Stuecke aufgeteilte Kappe |
-
0
- FR FR960300D patent/FR960300A/fr not_active Expired
- NL NL68832D patent/NL68832C/xx active
- BE BE481299D patent/BE481299A/xx unknown
-
1948
- 1948-03-15 GB GB7782/48A patent/GB652701A/en not_active Expired
- 1948-03-17 US US15364A patent/US2554210A/en not_active Expired - Lifetime
- 1948-04-02 FR FR58703D patent/FR58703E/fr not_active Expired
- 1948-07-14 FR FR58581D patent/FR58581E/fr not_active Expired
- 1948-12-31 DE DEP28769A patent/DE808581C/de not_active Expired
-
1949
- 1949-10-11 FR FR59723D patent/FR59723E/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR58703E (fr) | 1954-03-22 |
| FR58581E (fr) | 1954-01-27 |
| FR960300A (de) | 1950-04-15 |
| US2554210A (en) | 1951-05-22 |
| DE808581C (de) | 1951-07-16 |
| GB652701A (en) | 1951-05-02 |
| FR59723E (fr) | 1954-07-16 |
| BE481299A (de) |