FR2043018A5 - - Google Patents

Info

Publication number
FR2043018A5
FR2043018A5 FR7012498A FR7012498A FR2043018A5 FR 2043018 A5 FR2043018 A5 FR 2043018A5 FR 7012498 A FR7012498 A FR 7012498A FR 7012498 A FR7012498 A FR 7012498A FR 2043018 A5 FR2043018 A5 FR 2043018A5
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
FR7012498A
Other languages
French (fr)
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.)
Gullick Dobson Ltd
Original Assignee
Gullick Dobson Ltd
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
Application filed by Gullick Dobson Ltd filed Critical Gullick Dobson Ltd
Application granted granted Critical
Publication of FR2043018A5 publication Critical patent/FR2043018A5/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
    • E21D23/0409—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
    • E21D23/04—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
    • E21D23/0418—Positioning devices and stabilizing means for the props

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
FR7012498A 1969-04-08 1970-04-07 Expired FR2043018A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1784969 1969-04-08

Publications (1)

Publication Number Publication Date
FR2043018A5 true FR2043018A5 (en) 1971-02-12

Family

ID=10102300

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7012498A Expired FR2043018A5 (en) 1969-04-08 1970-04-07

Country Status (5)

Country Link
US (1) US3646768A (en)
AU (1) AU1304770A (en)
DE (1) DE2014372C3 (en)
FR (1) FR2043018A5 (en)
GB (1) GB1295075A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030308A (en) * 1976-05-21 1977-06-21 Fletcher Sutcliffe Wild Limited Mine roof supports
GB1546630A (en) * 1976-12-29 1979-05-23 Fletcher Sutcliffe Wild Ltd Mine roof supports
US4664563A (en) * 1984-09-21 1987-05-12 Basf Corporation Rigid polyurethane foams with constant or slightly decreasing strain with an increasing stress in compression

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1001412A (en) * 1960-09-15 1965-08-18 Dowty Mining Equipment Ltd Roof supports suitable for use in mines
DE1160389B (en) * 1961-08-21 1964-01-02 Mannesmann Ag Setting device for pit stamp
GB1038952A (en) * 1961-11-21 1966-08-17 Dobson Ltd W E & F Improvements in or relating to mine roof supports
GB1091601A (en) * 1964-01-24 1967-11-22 Dowty Mining Equipment Ltd Roof supports suitable for use in a mine
GB1107379A (en) * 1964-08-11 1968-03-27 Gullick Ltd Improvements in or relating to pivotally supported members particularly of mine roof supports
GB1115763A (en) * 1964-12-23 1968-05-29 Gullick Ltd Improvements in or relating to mine roof and like supports
DE1533762A1 (en) * 1967-06-07 1970-01-22 Rheinstahi Wanheim Gmbh Mechanically retractable extension element, in particular extension frame

Also Published As

Publication number Publication date
DE2014372A1 (en) 1970-10-15
US3646768A (en) 1972-03-07
GB1295075A (en) 1972-11-01
AU1304770A (en) 1970-03-25
DE2014372C3 (en) 1973-01-04

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Legal Events

Date Code Title Description
ST Notification of lapse