FR1321875A - friction prop - Google Patents

friction prop

Info

Publication number
FR1321875A
FR1321875A FR897136A FR897136A FR1321875A FR 1321875 A FR1321875 A FR 1321875A FR 897136 A FR897136 A FR 897136A FR 897136 A FR897136 A FR 897136A FR 1321875 A FR1321875 A FR 1321875A
Authority
FR
France
Prior art keywords
friction prop
prop
friction
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
FR897136A
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.)
Rheinstahl Wanheim GmbH
Original Assignee
Rheinstahl Wanheim GmbH
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 Rheinstahl Wanheim GmbH filed Critical Rheinstahl Wanheim GmbH
Priority to FR897136A priority Critical patent/FR1321875A/en
Application granted granted Critical
Publication of FR1321875A publication Critical patent/FR1321875A/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
    • E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations

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)
FR897136A 1962-05-10 1962-05-10 friction prop Expired FR1321875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR897136A FR1321875A (en) 1962-05-10 1962-05-10 friction prop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR897136A FR1321875A (en) 1962-05-10 1962-05-10 friction prop

Publications (1)

Publication Number Publication Date
FR1321875A true FR1321875A (en) 1963-03-22

Family

ID=8778655

Family Applications (1)

Application Number Title Priority Date Filing Date
FR897136A Expired FR1321875A (en) 1962-05-10 1962-05-10 friction prop

Country Status (1)

Country Link
FR (1) FR1321875A (en)

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