FR1417328A - Extension section of a support strut intended to be moved - Google Patents

Extension section of a support strut intended to be moved

Info

Publication number
FR1417328A
FR1417328A FR990049A FR990049A FR1417328A FR 1417328 A FR1417328 A FR 1417328A FR 990049 A FR990049 A FR 990049A FR 990049 A FR990049 A FR 990049A FR 1417328 A FR1417328 A FR 1417328A
Authority
FR
France
Prior art keywords
moved
extension section
support strut
intended
strut intended
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
FR990049A
Other languages
French (fr)
Inventor
Henryk Czosnyka
Zygmunt Biernat
Andrzej Skowron
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.)
KOPLANIA RUDY ZELAZA DZBOW
Original Assignee
KOPLANIA RUDY ZELAZA DZBOW
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 KOPLANIA RUDY ZELAZA DZBOW filed Critical KOPLANIA RUDY ZELAZA DZBOW
Priority to FR990049A priority Critical patent/FR1417328A/en
Application granted granted Critical
Publication of FR1417328A publication Critical patent/FR1417328A/en
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
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement

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)
FR990049A 1964-10-01 1964-10-01 Extension section of a support strut intended to be moved Expired FR1417328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR990049A FR1417328A (en) 1964-10-01 1964-10-01 Extension section of a support strut intended to be moved

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR990049A FR1417328A (en) 1964-10-01 1964-10-01 Extension section of a support strut intended to be moved

Publications (1)

Publication Number Publication Date
FR1417328A true FR1417328A (en) 1965-11-12

Family

ID=8839513

Family Applications (1)

Application Number Title Priority Date Filing Date
FR990049A Expired FR1417328A (en) 1964-10-01 1964-10-01 Extension section of a support strut intended to be moved

Country Status (1)

Country Link
FR (1) FR1417328A (en)

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