FR2184733B3 - - Google Patents

Info

Publication number
FR2184733B3
FR2184733B3 FR7317136A FR7317136A FR2184733B3 FR 2184733 B3 FR2184733 B3 FR 2184733B3 FR 7317136 A FR7317136 A FR 7317136A FR 7317136 A FR7317136 A FR 7317136A FR 2184733 B3 FR2184733 B3 FR 2184733B3
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
Application number
FR7317136A
Other languages
French (fr)
Other versions
FR2184733A1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bochumer Eisenhuette Heintzmann GmbH and Co KG
Original Assignee
Bochumer Eisenhuette Heintzmann GmbH and Co KG
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
Priority claimed from DE19722224207 external-priority patent/DE2224207C2/en
Application filed by Bochumer Eisenhuette Heintzmann GmbH and Co KG filed Critical Bochumer Eisenhuette Heintzmann GmbH and Co KG
Publication of FR2184733A1 publication Critical patent/FR2184733A1/fr
Application granted granted Critical
Publication of FR2184733B3 publication Critical patent/FR2184733B3/fr
Expired legal-status Critical Current

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
    • E21D23/0427—Shield operating devices; Hinges therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D19/00—Provisional protective covers for working space
    • E21D19/02—Provisional protective covers for working space for use in longwall working

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)
  • Lining And Supports For Tunnels (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
FR7317136A 1972-05-18 1973-05-11 Expired FR2184733B3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722224207 DE2224207C2 (en) 1972-05-18 Extension element for the shield extension of struts in underground mining operations

Publications (2)

Publication Number Publication Date
FR2184733A1 FR2184733A1 (en) 1973-12-28
FR2184733B3 true FR2184733B3 (en) 1976-04-23

Family

ID=5845198

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7317136A Expired FR2184733B3 (en) 1972-05-18 1973-05-11

Country Status (5)

Country Link
US (1) US3854293A (en)
AU (1) AU474950B2 (en)
BE (1) BE799668A (en)
FR (1) FR2184733B3 (en)
GB (1) GB1428256A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2253143B1 (en) * 1973-11-30 1978-11-03 Alsace Mines Potasse
DE2413538C2 (en) * 1974-03-21 1978-05-24 Bochumer Eisenhuette Heintzmann & Co, 4630 Bochum Shield support frame
DE2843857C2 (en) * 1978-10-07 1986-06-19 Bochumer Eisenhütte Heintzmann GmbH & Co, 4630 Bochum Shield support frame
GB2150192B (en) * 1983-11-16 1987-04-15 Dobson Park Ind Mineroof support
CN114607432A (en) * 2022-03-28 2022-06-10 中国矿业大学(北京) Support area adjustable support device for rib forming treatment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781888A (en) * 1947-07-02 1957-02-19 Gewerk Eisenhuette Westfalia Flexible conveyor having successively shiftable sections for long face mining
US2566003A (en) * 1947-07-07 1951-08-28 Mavor & Coulson Ltd Anchoring device for coal and other mines
FR1503990A (en) * 1966-10-11 1967-12-01 Bennes Marrel Improvements to support piles, especially for mines or underground work sites
FR1600845A (en) * 1968-07-08 1970-08-03

Also Published As

Publication number Publication date
GB1428256A (en) 1976-03-17
DE2224207B1 (en) 1973-01-04
BE799668A (en) 1973-11-19
AU5576473A (en) 1974-11-21
DE2224207A1 (en) 1973-01-04
FR2184733A1 (en) 1973-12-28
US3854293A (en) 1974-12-17
AU474950B2 (en) 1976-08-05

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Legal Events

Date Code Title Description
ST Notification of lapse