FR1274703A - étançon de mine ou analogue - Google Patents

étançon de mine ou analogue

Info

Publication number
FR1274703A
FR1274703A FR840036A FR840036A FR1274703A FR 1274703 A FR1274703 A FR 1274703A FR 840036 A FR840036 A FR 840036A FR 840036 A FR840036 A FR 840036A FR 1274703 A FR1274703 A FR 1274703A
Authority
FR
France
Prior art keywords
similar
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
FR840036A
Other languages
English (en)
Inventor
Karl Gerlach
Hans Gerlach
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
Priority to FR840036A priority Critical patent/FR1274703A/fr
Application granted granted Critical
Publication of FR1274703A publication Critical patent/FR1274703A/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
    • E21D15/42—Telescopic props with parts held relatively to each other by friction or gripping with special parts to influence the friction
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR840036A 1960-09-30 1960-09-30 étançon de mine ou analogue Expired FR1274703A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR840036A FR1274703A (fr) 1960-09-30 1960-09-30 étançon de mine ou analogue

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR840036A FR1274703A (fr) 1960-09-30 1960-09-30 étançon de mine ou analogue

Publications (1)

Publication Number Publication Date
FR1274703A true FR1274703A (fr) 1961-10-27

Family

ID=8739976

Family Applications (1)

Application Number Title Priority Date Filing Date
FR840036A Expired FR1274703A (fr) 1960-09-30 1960-09-30 étançon de mine ou analogue

Country Status (1)

Country Link
FR (1) FR1274703A (fr)

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