FR792433A - étancon de mine élastique - Google Patents

étancon de mine élastique

Info

Publication number
FR792433A
FR792433A FR792433DA FR792433A FR 792433 A FR792433 A FR 792433A FR 792433D A FR792433D A FR 792433DA FR 792433 A FR792433 A FR 792433A
Authority
FR
France
Prior art keywords
elastic
mine prop
prop
mine
elastic 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)
French (fr)
Inventor
Wilhelm Fehlemann
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 FR792433A publication Critical patent/FR792433A/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
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props

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)
  • Actuator (AREA)
FR792433D 1935-07-13 1935-07-13 étancon de mine élastique Expired FR792433A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR792433T 1935-07-13

Publications (1)

Publication Number Publication Date
FR792433A true FR792433A (fr) 1935-12-31

Family

ID=9230148

Family Applications (1)

Application Number Title Priority Date Filing Date
FR792433D Expired FR792433A (fr) 1935-07-13 1935-07-13 étancon de mine élastique

Country Status (2)

Country Link
BE (1) BE410506A (enrdf_load_stackoverflow)
FR (1) FR792433A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE410506A (enrdf_load_stackoverflow)

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