FR2415719B1 - - Google Patents
Info
- Publication number
- FR2415719B1 FR2415719B1 FR7836622A FR7836622A FR2415719B1 FR 2415719 B1 FR2415719 B1 FR 2415719B1 FR 7836622 A FR7836622 A FR 7836622A FR 7836622 A FR7836622 A FR 7836622A FR 2415719 B1 FR2415719 B1 FR 2415719B1
- Authority
- FR
- France
- 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
- 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
- E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports
-
- 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
- E21D23/08—Advancing mechanisms
- E21D23/081—Advancing mechanisms forming parts of the roof supports
- E21D23/085—Advancing mechanisms forming parts of the roof supports acting on a conveyor or a guide for the mining machine
- E21D23/086—Details of fixing devices 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)
- Framework For Endless Conveyors (AREA)
- Processing Of Meat And Fish (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782803816 DE2803816A1 (en) | 1978-01-28 | 1978-01-28 | EQUIPMENT FOR THE FINAL SUPPORT OF A STEP EXTENSION IN INCLINED AND STEEP POSITIONING |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2415719A1 FR2415719A1 (en) | 1979-08-24 |
FR2415719B1 true FR2415719B1 (en) | 1983-10-21 |
Family
ID=6030658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7836622A Granted FR2415719A1 (en) | 1978-01-28 | 1978-12-28 | Mine support system for sloping seams - has arm on height adjustable beam on face conveyor to swing adjacent support sideways |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2803816A1 (en) |
FR (1) | FR2415719A1 (en) |
PL (1) | PL115454B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2942943C2 (en) * | 1979-10-24 | 1981-11-26 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal | Device for maintaining the specified center-to-center distance of the support elements of a step support for the dismantling of long fronts |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1054651A (en) * | 1900-01-01 | |||
GB1153573A (en) * | 1965-07-17 | 1969-05-29 | Dobson Ltd W E & F | Improvements in or relating to Mine Roof Support systems |
DE1277789B (en) * | 1967-01-13 | 1968-09-19 | Gewerk Eisenhuette Westfalia | Hydraulically moving support frame |
DE2355234A1 (en) * | 1973-11-05 | 1975-05-07 | Groetschel Karl Maria Dipl Ber | DEVICE FOR ADJUSTING THE WALKING DIRECTION OF A GROUP OF WALKING EXTENSIONS |
DE2455938C2 (en) * | 1974-11-27 | 1976-09-02 | Ruhrkohle Ag | DEVICE FOR ALIGNING THE BOTTOM SHIELD OF A STRUT WITH SHIELD EXTENSION |
-
1978
- 1978-01-28 DE DE19782803816 patent/DE2803816A1/en not_active Withdrawn
- 1978-12-28 FR FR7836622A patent/FR2415719A1/en active Granted
-
1979
- 1979-01-26 PL PL21301679A patent/PL115454B1/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE2803816A1 (en) | 1979-08-09 |
PL115454B1 (en) | 1981-04-30 |
PL213016A1 (en) | 1979-12-17 |
FR2415719A1 (en) | 1979-08-24 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |