FR1133974A - mine prop - Google Patents

mine prop

Info

Publication number
FR1133974A
FR1133974A FR1133974DA FR1133974A FR 1133974 A FR1133974 A FR 1133974A FR 1133974D A FR1133974D A FR 1133974DA FR 1133974 A FR1133974 A FR 1133974A
Authority
FR
France
Prior art keywords
mine prop
prop
mine
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
Wilhelm Steinkopf
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 FR1133974A publication Critical patent/FR1133974A/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
    • E21D15/32—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring

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)
FR1133974D 1954-10-25 1955-06-24 mine prop Expired FR1133974A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1133974X 1954-10-25

Publications (1)

Publication Number Publication Date
FR1133974A true FR1133974A (en) 1957-04-04

Family

ID=7725837

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1133974D Expired FR1133974A (en) 1954-10-25 1955-06-24 mine prop

Country Status (1)

Country Link
FR (1) FR1133974A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147321A (en) * 1976-10-07 1979-04-03 C. Evans & Sons Limited Drop-head support assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147321A (en) * 1976-10-07 1979-04-03 C. Evans & Sons Limited Drop-head support assembly

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