FR1450084A - Supports de toits de mines actionnés hydrauliquement - Google Patents

Supports de toits de mines actionnés hydrauliquement

Info

Publication number
FR1450084A
FR1450084A FR34360A FR34360A FR1450084A FR 1450084 A FR1450084 A FR 1450084A FR 34360 A FR34360 A FR 34360A FR 34360 A FR34360 A FR 34360A FR 1450084 A FR1450084 A FR 1450084A
Authority
FR
France
Prior art keywords
hydraulically actuated
mine roof
roof supports
actuated mine
supports
Prior art date
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
FR34360A
Other languages
English (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.)
Electro Hydraulics Ltd
Original Assignee
Electro Hydraulics 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 Electro Hydraulics Ltd filed Critical Electro Hydraulics Ltd
Priority to FR34360A priority Critical patent/FR1450084A/fr
Application granted granted Critical
Publication of FR1450084A publication Critical patent/FR1450084A/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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting 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)
FR34360A 1965-10-08 1965-10-08 Supports de toits de mines actionnés hydrauliquement Expired FR1450084A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR34360A FR1450084A (fr) 1965-10-08 1965-10-08 Supports de toits de mines actionnés hydrauliquement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR34360A FR1450084A (fr) 1965-10-08 1965-10-08 Supports de toits de mines actionnés hydrauliquement

Publications (1)

Publication Number Publication Date
FR1450084A true FR1450084A (fr) 1966-05-06

Family

ID=8590090

Family Applications (1)

Application Number Title Priority Date Filing Date
FR34360A Expired FR1450084A (fr) 1965-10-08 1965-10-08 Supports de toits de mines actionnés hydrauliquement

Country Status (1)

Country Link
FR (1) FR1450084A (fr)

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