FR1040546A - étançon - Google Patents

étançon

Info

Publication number
FR1040546A
FR1040546A FR1040546DA FR1040546A FR 1040546 A FR1040546 A FR 1040546A FR 1040546D A FR1040546D A FR 1040546DA FR 1040546 A FR1040546 A FR 1040546A
Authority
FR
France
Prior art keywords
prop
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.)
LE PROGRES CHARBONNIER PROCHAR
Original Assignee
LE PROGRES CHARBONNIER PROCHAR
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 LE PROGRES CHARBONNIER PROCHAR filed Critical LE PROGRES CHARBONNIER PROCHAR
Application granted granted Critical
Publication of FR1040546A publication Critical patent/FR1040546A/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
    • E21D15/285—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)
FR1040546D 1950-09-09 1951-08-16 étançon Expired FR1040546A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE1040546X 1950-09-09

Publications (1)

Publication Number Publication Date
FR1040546A true FR1040546A (fr) 1953-10-15

Family

ID=3892720

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1040546D Expired FR1040546A (fr) 1950-09-09 1951-08-16 étançon

Country Status (1)

Country Link
FR (1) FR1040546A (fr)

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