FR1371098A - mine prop - Google Patents

mine prop

Info

Publication number
FR1371098A
FR1371098A FR950307A FR950307A FR1371098A FR 1371098 A FR1371098 A FR 1371098A FR 950307 A FR950307 A FR 950307A FR 950307 A FR950307 A FR 950307A FR 1371098 A FR1371098 A FR 1371098A
Authority
FR
France
Prior art keywords
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
FR950307A
Other languages
French (fr)
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.)
EWALD WIEMANN MASCHF
Original Assignee
EWALD WIEMANN MASCHF
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 EWALD WIEMANN MASCHF filed Critical EWALD WIEMANN MASCHF
Priority to FR950307A priority Critical patent/FR1371098A/en
Application granted granted Critical
Publication of FR1371098A publication Critical patent/FR1371098A/en
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
    • E21D15/30—Telescopic props with parts held relatively to each other by friction or gripping by means expanded or contracted by pressure applied through the medium of a fluid or quasi- fluid, e.g. rubber
    • E21D15/306—Telescopic props with parts held relatively to each other by friction or gripping by means expanded or contracted by pressure applied through the medium of a fluid or quasi- fluid, e.g. rubber by means of a liquid

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)
FR950307A 1963-10-11 1963-10-11 mine prop Expired FR1371098A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR950307A FR1371098A (en) 1963-10-11 1963-10-11 mine prop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR950307A FR1371098A (en) 1963-10-11 1963-10-11 mine prop

Publications (1)

Publication Number Publication Date
FR1371098A true FR1371098A (en) 1964-08-28

Family

ID=8814190

Family Applications (1)

Application Number Title Priority Date Filing Date
FR950307A Expired FR1371098A (en) 1963-10-11 1963-10-11 mine prop

Country Status (1)

Country Link
FR (1) FR1371098A (en)

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