FR1002177A - metal prop - Google Patents

metal prop

Info

Publication number
FR1002177A
FR1002177A FR1002177DA FR1002177A FR 1002177 A FR1002177 A FR 1002177A FR 1002177D A FR1002177D A FR 1002177DA FR 1002177 A FR1002177 A FR 1002177A
Authority
FR
France
Prior art keywords
metal prop
prop
metal
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
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.)
ENTPR S ET DE MATERIEL IND SOC
Original Assignee
ENTPR S ET DE MATERIEL IND SOC
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 ENTPR S ET DE MATERIEL IND SOC filed Critical ENTPR S ET DE MATERIEL IND SOC
Application granted granted Critical
Publication of FR1002177A publication Critical patent/FR1002177A/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
    • E21D15/36—Telescopic props with parts held relatively to each other by friction or gripping by a tiltable collar surrounding one or both parts

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)
FR1002177D 1946-08-09 1946-08-09 metal prop Expired FR1002177A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1002177T 1946-08-09

Publications (1)

Publication Number Publication Date
FR1002177A true FR1002177A (en) 1952-03-03

Family

ID=9561910

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1002177D Expired FR1002177A (en) 1946-08-09 1946-08-09 metal prop

Country Status (1)

Country Link
FR (1) FR1002177A (en)

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