FR762281A - Combined support structure - Google Patents

Combined support structure

Info

Publication number
FR762281A
FR762281A FR762281DA FR762281A FR 762281 A FR762281 A FR 762281A FR 762281D A FR762281D A FR 762281DA FR 762281 A FR762281 A FR 762281A
Authority
FR
France
Prior art keywords
support structure
combined support
combined
support
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.)
GAMOT FRERES
Original Assignee
GAMOT FRERES
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 GAMOT FRERES filed Critical GAMOT FRERES
Application granted granted Critical
Publication of FR762281A publication Critical patent/FR762281A/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
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/20—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with pawl, pin, cross-piece, or the like engaging with ratchet teeth, notches, holes, or the like, spaced apart at intervals

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)
FR762281D 1933-10-12 1933-10-12 Combined support structure Expired FR762281A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR762281T 1933-10-12

Publications (1)

Publication Number Publication Date
FR762281A true FR762281A (en) 1934-04-09

Family

ID=9176173

Family Applications (1)

Application Number Title Priority Date Filing Date
FR762281D Expired FR762281A (en) 1933-10-12 1933-10-12 Combined support structure

Country Status (1)

Country Link
FR (1) FR762281A (en)

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