LU41944A1 - - Google Patents
Info
- Publication number
- LU41944A1 LU41944A1 LU41944DA LU41944A1 LU 41944 A1 LU41944 A1 LU 41944A1 LU 41944D A LU41944D A LU 41944DA LU 41944 A1 LU41944 A1 LU 41944A1
- Authority
- LU
- Luxembourg
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
- E21D17/082—Cap joints for obtaining a coal-face free of pit-props of sliding type
-
- 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
- E21D17/0206—Hydraulically operated extension devices
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
- E21D23/063—Retractable cantilever extensions therefor
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)
- Architecture (AREA)
- Structural Engineering (AREA)
- Safety Valves (AREA)
- Lining And Supports For Tunnels (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR868738A FR1303511A (fr) | 1961-07-22 | 1961-07-22 | Système de rallonges télescopiques à portance hydraulique pour éléments de soutènement en taille |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU41944A1 true LU41944A1 (pt) | 1962-08-27 |
Family
ID=8759869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU41944D LU41944A1 (pt) | 1961-07-22 | 1962-06-26 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3240021A (pt) |
| BE (1) | BE618721A (pt) |
| FR (1) | FR1303511A (pt) |
| GB (1) | GB981568A (pt) |
| LU (1) | LU41944A1 (pt) |
| OA (1) | OA00401A (pt) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1290506B (de) * | 1962-11-10 | 1969-03-13 | Groetschel Karl Maria | Wanderausbauaggregat |
| LU44403A1 (pt) * | 1963-09-09 | 1963-11-09 | ||
| GB1045353A (en) * | 1964-02-12 | 1966-10-12 | Gullick Ltd | Improvements in or relating to mine roof supports |
| HU167711B (pt) * | 1973-12-07 | 1975-12-25 | ||
| GB1583647A (en) * | 1976-09-24 | 1981-01-28 | Huwood Ltd | Mine roof supports |
| US4480946A (en) * | 1981-10-19 | 1984-11-06 | Kelley Jay H | Gob canopy for a mine roof support |
| DE3221486A1 (de) * | 1982-06-07 | 1983-12-08 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Vorpfaendeinrichtung fuer hydraulische schreitausbaugestelle |
| GB2123885B (en) * | 1982-07-09 | 1986-02-19 | Dowty Mining Equipment Ltd | Roof support for use in mines |
| US4483644A (en) * | 1982-09-15 | 1984-11-20 | Johnson Thomas P | Cantilevered mobile marine rig with hydraulic load equalizer |
| US4565263A (en) * | 1985-06-10 | 1986-01-21 | Southworth Ted J | Sawhorse with extendible and contractible leg assemblies |
| GB2196371B (en) * | 1986-10-15 | 1990-05-09 | Gullick Dobson Ltd | Mine roof supports |
| CN102305090A (zh) * | 2011-09-29 | 2012-01-04 | 郑州四维机电设备制造有限公司 | 伸缩梁机构 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1182188B (de) * | 1956-06-05 | 1964-11-26 | Hoesch Ag | Vorpfaendeinrichtung |
| FR1192849A (fr) * | 1957-04-20 | 1959-10-28 | Hoesch Werke Ag | Allonge de soutènement |
| GB881364A (en) * | 1959-01-16 | 1961-11-01 | Gullick Ltd | Improvements in or relating to hydraulic ram devices, particularly applicable to mine roof supports |
| DE1077618B (de) * | 1959-04-16 | 1960-03-17 | Hermann Schwarz Kommanditgesel | Nachgiebige Streckenstuetze |
| US3127748A (en) * | 1960-05-10 | 1964-04-07 | Gullick Ltd | Mine roof supports |
-
1961
- 1961-07-22 FR FR868738A patent/FR1303511A/fr not_active Expired
-
1962
- 1962-06-08 BE BE618721A patent/BE618721A/fr unknown
- 1962-06-26 LU LU41944D patent/LU41944A1/xx unknown
- 1962-07-06 GB GB25992/62A patent/GB981568A/en not_active Expired
- 1962-07-20 US US211344A patent/US3240021A/en not_active Expired - Lifetime
-
1964
- 1964-10-23 OA OA50478A patent/OA00401A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB981568A (en) | 1965-01-27 |
| FR1303511A (fr) | 1962-09-14 |
| US3240021A (en) | 1966-03-15 |
| OA00401A (fr) | 1966-05-15 |
| BE618721A (fr) | 1962-10-01 |