FR1171836A - prop with locking element - Google Patents

prop with locking element

Info

Publication number
FR1171836A
FR1171836A FR1171836DA FR1171836A FR 1171836 A FR1171836 A FR 1171836A FR 1171836D A FR1171836D A FR 1171836DA FR 1171836 A FR1171836 A FR 1171836A
Authority
FR
France
Prior art keywords
prop
locking element
locking
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)
Inventor
Hermann Lutz
Friedrich Karl Sauer
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 FR1171836A publication Critical patent/FR1171836A/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)
FR1171836D 1957-04-23 1957-04-23 prop with locking element Expired FR1171836A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1171836T 1957-04-23

Publications (1)

Publication Number Publication Date
FR1171836A true FR1171836A (en) 1959-01-30

Family

ID=9657800

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1171836D Expired FR1171836A (en) 1957-04-23 1957-04-23 prop with locking element

Country Status (1)

Country Link
FR (1) FR1171836A (en)

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