PL221456A1 - - Google Patents

Info

Publication number
PL221456A1
PL221456A1 PL22145680A PL22145680A PL221456A1 PL 221456 A1 PL221456 A1 PL 221456A1 PL 22145680 A PL22145680 A PL 22145680A PL 22145680 A PL22145680 A PL 22145680A PL 221456 A1 PL221456 A1 PL 221456A1
Authority
PL
Poland
Application number
PL22145680A
Inventor
Heinrich Sussenbeck
Alfred Zitz
Andreas Pakh
Original Assignee
Voest Alpine Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3491720&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=PL221456(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voest Alpine Ag filed Critical Voest Alpine Ag
Publication of PL221456A1 publication Critical patent/PL221456A1/xx

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
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E21D23/0034—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member
    • 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

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)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Tents Or Canopies (AREA)
PL22145680A 1979-01-23 1980-01-19 PL221456A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT48079A AT361430B (en) 1979-01-23 1979-01-23 EXTENSION BLOCK

Publications (1)

Publication Number Publication Date
PL221456A1 true PL221456A1 (en) 1980-09-22

Family

ID=3491720

Family Applications (1)

Application Number Title Priority Date Filing Date
PL22145680A PL221456A1 (en) 1979-01-23 1980-01-19

Country Status (10)

Country Link
EP (1) EP0014188B1 (en)
JP (1) JPS55126700A (en)
AT (1) AT361430B (en)
AU (1) AU5480780A (en)
DE (1) DE3060979D1 (en)
ES (1) ES487915A1 (en)
HU (1) HU184230B (en)
IN (1) IN153639B (en)
PL (1) PL221456A1 (en)
YU (1) YU9880A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4016929C1 (en) * 1990-05-25 1991-09-26 Hermann Hemscheidt Maschinenfabrik Gmbh & Co., 5600 Wuppertal, De Roof support for mine - has canopy with bar hinged to floor skids by extendable props
CN1052526C (en) * 1996-10-03 2000-05-17 中国矿业大学北京研究生部 Light low-level hydraulic prop for caving coal-mining method
CN102704975B (en) * 2012-06-29 2015-08-19 中国矿业大学 A kind of top-coal caving face coal separation hydraulic support

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2170295A5 (en) * 1971-11-18 1973-09-14 Alacchi Georges
GB1477136A (en) * 1973-10-18 1977-06-22 Dowty Mining Equipment Ltd Mine roof support
US4065929A (en) * 1976-03-08 1978-01-03 Atlantic Richfield Company Mine roof support and method in longwall mining of thick mineral seams
GB1557814A (en) * 1976-03-13 1979-12-12 Dowty Mining Equipment Ltd Mine roof support
DE7616114U1 (en) * 1976-05-20 1976-10-14 Bochumer Eisenhuette Heintzmann Gmbh & Co, 4630 Bochum SHIELD STRUCTURE
FR2369414A1 (en) * 1976-10-29 1978-05-26 Bennes Marrel Advancing mine roof support - has box-section rear link with variable size opening to allow passage of material from rear of face
DE2705460A1 (en) * 1977-02-10 1978-08-17 Hemscheidt Maschf Hermann Mine gallery roof drilling protective support - has overhead sloping plate with opening for drill between front and rear supports
DE2808487C2 (en) * 1978-02-28 1986-10-02 Gewerkschaft Eisenhütte Westfalia GmbH, 4670 Lünen Extraction facility for the extraction of seam-like deposits, especially of great thickness

Also Published As

Publication number Publication date
AT361430B (en) 1981-03-10
DE3060979D1 (en) 1982-12-02
EP0014188A1 (en) 1980-08-06
YU9880A (en) 1983-04-30
EP0014188B1 (en) 1982-10-27
JPS55126700A (en) 1980-09-30
IN153639B (en) 1984-08-04
HU184230B (en) 1984-07-30
AU5480780A (en) 1980-07-31
ES487915A1 (en) 1980-10-01
ATA48079A (en) 1980-08-15

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