FR2181878B1 - - Google Patents
Info
- Publication number
- FR2181878B1 FR2181878B1 FR7313326A FR7313326A FR2181878B1 FR 2181878 B1 FR2181878 B1 FR 2181878B1 FR 7313326 A FR7313326 A FR 7313326A FR 7313326 A FR7313326 A FR 7313326A FR 2181878 B1 FR2181878 B1 FR 2181878B1
- 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
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/08—Guiding the machine
- E21C35/12—Guiding the machine along a conveyor for the cut material
- E21C35/14—Equipment for pressing the conveyor towards the working face
-
- 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
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
- E21D23/0073—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with advancing shifting devices connected therewith
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/08—Shifting conveyors or other transport devices from one location at the working face to another
- E21F13/086—Armoured conveyors shifting devices
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)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Actuator (AREA)
- Jigging Conveyors (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2220452A DE2220452C3 (de) | 1972-04-26 | 1972-04-26 | Rückzylinder für Strebförderer mit einer eingebauten Dosiervorrichtung zur Hubbegrenzung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2181878A1 FR2181878A1 (US07943777-20110517-C00090.png) | 1973-12-07 |
| FR2181878B1 true FR2181878B1 (US07943777-20110517-C00090.png) | 1975-12-26 |
Family
ID=5843326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7313326A Expired FR2181878B1 (US07943777-20110517-C00090.png) | 1972-04-26 | 1973-04-12 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3857246A (US07943777-20110517-C00090.png) |
| DE (1) | DE2220452C3 (US07943777-20110517-C00090.png) |
| FR (1) | FR2181878B1 (US07943777-20110517-C00090.png) |
| GB (1) | GB1377455A (US07943777-20110517-C00090.png) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2807431C2 (de) * | 1978-02-22 | 1986-10-23 | Bochumer Eisenhütte Heintzmann GmbH & Co, 4630 Bochum | Steuereinrichtung für die mit einem hydraulischen Arbeitsmedium beaufschlagbaren Verbraucher eines Ausbaugestells im untertägigen Grubenausbau |
| DE2924380A1 (de) * | 1979-06-16 | 1981-01-08 | Gewerk Eisenhuette Westfalia | Hubbegrenzungsvorrichtung fuer schubkolbengetriebe, insbesondere fuer schreitund rueckzylinder fuer das ruecken eines foerderers und/oder eines schreitausbaus in bergbau-untertagebetrieben |
| DE8318615U1 (de) * | 1983-06-28 | 1983-11-03 | Klöckner-Becorit GmbH, 4620 Castrop-Rauxel | Richtzylinder fuer den schildausbau |
| AT406600B (de) * | 1998-05-29 | 2000-06-26 | Hygrama Ag | Arbeitszylinder |
| US10914170B2 (en) | 2018-10-29 | 2021-02-09 | Joy Global Underground Mining Llc | Roof support connector |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2163982A (en) * | 1935-03-11 | 1939-06-27 | Mereier Jean | Fluid-operated jack |
| US2186266A (en) * | 1936-08-20 | 1940-01-09 | Onions John Henry | Shock absorber for aircraft |
| US2623502A (en) * | 1947-06-12 | 1952-12-30 | Fairey Aviat Co Ltd | Aircraft control system with fluid operated holding device |
| US2789712A (en) * | 1953-07-31 | 1957-04-23 | Clark Equipment Co | Positioning system for tractor shoveles and the like |
-
1972
- 1972-04-26 DE DE2220452A patent/DE2220452C3/de not_active Expired
-
1973
- 1973-04-12 US US00350469A patent/US3857246A/en not_active Expired - Lifetime
- 1973-04-12 FR FR7313326A patent/FR2181878B1/fr not_active Expired
- 1973-04-18 GB GB1885773A patent/GB1377455A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1377455A (en) | 1974-12-18 |
| DE2220452B2 (de) | 1979-07-19 |
| DE2220452C3 (de) | 1980-03-20 |
| US3857246A (en) | 1974-12-31 |
| FR2181878A1 (US07943777-20110517-C00090.png) | 1973-12-07 |
| DE2220452A1 (de) | 1973-11-15 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |