FR1318110A - Extension system for walking retaining elements - Google Patents
Extension system for walking retaining elementsInfo
- Publication number
- FR1318110A FR1318110A FR891743A FR891743A FR1318110A FR 1318110 A FR1318110 A FR 1318110A FR 891743 A FR891743 A FR 891743A FR 891743 A FR891743 A FR 891743A FR 1318110 A FR1318110 A FR 1318110A
- Authority
- FR
- France
- Prior art keywords
- retaining elements
- extension system
- walking
- walking retaining
- extension
- Prior art date
- 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
- 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
-
- 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
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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR891743A FR1318110A (en) | 1962-03-21 | 1962-03-21 | Extension system for walking retaining elements |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR891743A FR1318110A (en) | 1962-03-21 | 1962-03-21 | Extension system for walking retaining elements |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1318110A true FR1318110A (en) | 1963-02-15 |
Family
ID=8774989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR891743A Expired FR1318110A (en) | 1962-03-21 | 1962-03-21 | Extension system for walking retaining elements |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1318110A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1207318B (en) * | 1963-07-26 | 1965-12-23 | Roger Louis Redhaber | Striding expansion team for mining operations |
DE1223790B (en) * | 1963-06-21 | 1966-09-01 | Dowty Mining Equipment Ltd | Extension frame with two extension frames arranged parallel to each other |
DE1289806B (en) * | 1963-07-02 | 1969-02-27 | Rheinstahl Wanheim Gmbh | Extension trestle |
US3718265A (en) * | 1970-02-24 | 1973-02-27 | Demay Ag | Lift truck for hot vessels, particularly for steel-mill converters |
-
1962
- 1962-03-21 FR FR891743A patent/FR1318110A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1223790B (en) * | 1963-06-21 | 1966-09-01 | Dowty Mining Equipment Ltd | Extension frame with two extension frames arranged parallel to each other |
DE1289806B (en) * | 1963-07-02 | 1969-02-27 | Rheinstahl Wanheim Gmbh | Extension trestle |
DE1289806C2 (en) * | 1963-07-02 | 1973-02-01 | Rheinstahl Wanheim Gmbh | Extension trestle |
DE1207318B (en) * | 1963-07-26 | 1965-12-23 | Roger Louis Redhaber | Striding expansion team for mining operations |
US3718265A (en) * | 1970-02-24 | 1973-02-27 | Demay Ag | Lift truck for hot vessels, particularly for steel-mill converters |
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