FR1009849A - étançon de mine en acier - Google Patents

étançon de mine en acier

Info

Publication number
FR1009849A
FR1009849A FR1009849DA FR1009849A FR 1009849 A FR1009849 A FR 1009849A FR 1009849D A FR1009849D A FR 1009849DA FR 1009849 A FR1009849 A FR 1009849A
Authority
FR
France
Prior art keywords
mine prop
steel mine
steel
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
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.)
SCHWARZ KG HERMANN
Hermann Schwarz KG
Original Assignee
SCHWARZ KG HERMANN
Hermann Schwarz 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
Application filed by SCHWARZ KG HERMANN, Hermann Schwarz KG filed Critical SCHWARZ KG HERMANN
Application granted granted Critical
Publication of FR1009849A publication Critical patent/FR1009849A/fr
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
    • E21D15/50—Component parts or details of props
    • E21D15/52—Extensible units located above or below standard props
    • E21D15/526—Extensible units located above or below standard props for step-by-step extension of the prop
    • 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)
FR1009849D 1948-07-01 1948-07-01 étançon de mine en acier Expired FR1009849A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1009849T 1948-07-01

Publications (1)

Publication Number Publication Date
FR1009849A true FR1009849A (fr) 1952-06-04

Family

ID=9568517

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1009849D Expired FR1009849A (fr) 1948-07-01 1948-07-01 étançon de mine en acier

Country Status (1)

Country Link
FR (1) FR1009849A (fr)

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