FR1132827A - mine prop - Google Patents

mine prop

Info

Publication number
FR1132827A
FR1132827A FR1132827DA FR1132827A FR 1132827 A FR1132827 A FR 1132827A FR 1132827D A FR1132827D A FR 1132827DA FR 1132827 A FR1132827 A FR 1132827A
Authority
FR
France
Prior art keywords
mine prop
prop
mine
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
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.)
Gutehoffnungshutte Sterkrade AG
Original Assignee
Gutehoffnungshutte Sterkrade 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
Application filed by Gutehoffnungshutte Sterkrade AG filed Critical Gutehoffnungshutte Sterkrade AG
Application granted granted Critical
Publication of FR1132827A publication Critical patent/FR1132827A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR1132827D 1954-10-18 1955-10-17 mine prop Expired FR1132827A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1132827X 1954-10-18

Publications (1)

Publication Number Publication Date
FR1132827A true FR1132827A (en) 1957-03-18

Family

ID=7725743

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1132827D Expired FR1132827A (en) 1954-10-18 1955-10-17 mine prop

Country Status (1)

Country Link
FR (1) FR1132827A (en)

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