FR1120796A - Perfectionnements apportés aux étançons, plus spécialement aux étançons, de mines - Google Patents

Perfectionnements apportés aux étançons, plus spécialement aux étançons, de mines

Info

Publication number
FR1120796A
FR1120796A FR1120796DA FR1120796A FR 1120796 A FR1120796 A FR 1120796A FR 1120796D A FR1120796D A FR 1120796DA FR 1120796 A FR1120796 A FR 1120796A
Authority
FR
France
Prior art keywords
props
mines
specifically
improvements made
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
English (en)
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.)
Becorit Grubenausbau GmbH
Original Assignee
Becorit Grubenausbau 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 Becorit Grubenausbau GmbH filed Critical Becorit Grubenausbau GmbH
Application granted granted Critical
Publication of FR1120796A publication Critical patent/FR1120796A/fr
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
    • E21D15/38—Telescopic props with parts held relatively to each other by friction or gripping with longitudinally-divided upper or lower prop parts, e.g. interfitting laminations

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)
FR1120796D 1954-03-13 1955-03-12 Perfectionnements apportés aux étançons, plus spécialement aux étançons, de mines Expired FR1120796A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1120796X 1954-03-13

Publications (1)

Publication Number Publication Date
FR1120796A true FR1120796A (fr) 1956-07-12

Family

ID=7724592

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1120796D Expired FR1120796A (fr) 1954-03-13 1955-03-12 Perfectionnements apportés aux étançons, plus spécialement aux étançons, de mines

Country Status (1)

Country Link
FR (1) FR1120796A (fr)

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