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FR806574A - étançon de mine télescopique - Google Patents

étançon de mine télescopique

Info

Publication number
FR806574A
FR806574A FR806574DA FR806574A FR 806574 A FR806574 A FR 806574A FR 806574D A FR806574D A FR 806574DA FR 806574 A FR806574 A FR 806574A
Authority
FR
France
Prior art keywords
mine prop
telescopic
telescopic mine
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.)
Hammerwerk Schulte M B H & Co
Original Assignee
Hammerwerk Schulte M B H & Co
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 Hammerwerk Schulte M B H & Co filed Critical Hammerwerk Schulte M B H & Co
Application granted granted Critical
Publication of FR806574A publication Critical patent/FR806574A/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
    • E21D15/285—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)
FR806574D 1936-05-18 1936-05-18 étançon de mine télescopique Expired FR806574A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR806574T 1936-05-18

Publications (1)

Publication Number Publication Date
FR806574A true FR806574A (fr) 1936-12-19

Family

ID=9251983

Family Applications (1)

Application Number Title Priority Date Filing Date
FR806574D Expired FR806574A (fr) 1936-05-18 1936-05-18 étançon de mine télescopique

Country Status (1)

Country Link
FR (1) FR806574A (fr)

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