FR1004614A - étançon pour mines - Google Patents

étançon pour mines

Info

Publication number
FR1004614A
FR1004614A FR1004614DA FR1004614A FR 1004614 A FR1004614 A FR 1004614A FR 1004614D A FR1004614D A FR 1004614DA FR 1004614 A FR1004614 A FR 1004614A
Authority
FR
France
Prior art keywords
mining prop
prop
mining
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)
Inventor
Arnold Haarmann
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 filed Critical
Application granted granted Critical
Publication of FR1004614A publication Critical patent/FR1004614A/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
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/40—Collar or other support gripped to one or both parts by toggle-action, cam, or other member pivoted or similarly mounted
    • 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
    • E21D15/42—Telescopic props with parts held relatively to each other by friction or gripping with special parts to influence the friction

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)
FR1004614D 1949-01-17 1949-11-26 étançon pour mines Expired FR1004614A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1004614X 1949-01-17

Publications (1)

Publication Number Publication Date
FR1004614A true FR1004614A (fr) 1952-04-01

Family

ID=7656651

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1004614D Expired FR1004614A (fr) 1949-01-17 1949-11-26 étançon pour mines

Country Status (1)

Country Link
FR (1) FR1004614A (fr)

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