FR1281995A - Multi-piece, friction-locking mine prop - Google Patents

Multi-piece, friction-locking mine prop

Info

Publication number
FR1281995A
FR1281995A FR845142A FR845142A FR1281995A FR 1281995 A FR1281995 A FR 1281995A FR 845142 A FR845142 A FR 845142A FR 845142 A FR845142 A FR 845142A FR 1281995 A FR1281995 A FR 1281995A
Authority
FR
France
Prior art keywords
friction
piece
mine prop
locking
locking 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
FR845142A
Other languages
French (fr)
Inventor
Karl Gerlach
Hans Gerlach
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
Priority to FR845142A priority Critical patent/FR1281995A/en
Application granted granted Critical
Publication of FR1281995A publication Critical patent/FR1281995A/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)
FR845142A 1960-11-26 1960-11-26 Multi-piece, friction-locking mine prop Expired FR1281995A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR845142A FR1281995A (en) 1960-11-26 1960-11-26 Multi-piece, friction-locking mine prop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR845142A FR1281995A (en) 1960-11-26 1960-11-26 Multi-piece, friction-locking mine prop

Publications (1)

Publication Number Publication Date
FR1281995A true FR1281995A (en) 1962-01-19

Family

ID=8743506

Family Applications (1)

Application Number Title Priority Date Filing Date
FR845142A Expired FR1281995A (en) 1960-11-26 1960-11-26 Multi-piece, friction-locking mine prop

Country Status (1)

Country Link
FR (1) FR1281995A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5590862A (en) * 1993-11-25 1997-01-07 Ono; Tatsuo Device for adjusting the length of a support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5590862A (en) * 1993-11-25 1997-01-07 Ono; Tatsuo Device for adjusting the length of a support

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