FR1169760A - multi-piece mine prop - Google Patents

multi-piece mine prop

Info

Publication number
FR1169760A
FR1169760A FR1169760DA FR1169760A FR 1169760 A FR1169760 A FR 1169760A FR 1169760D A FR1169760D A FR 1169760DA FR 1169760 A FR1169760 A FR 1169760A
Authority
FR
France
Prior art keywords
mine prop
piece
piece mine
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
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
Application granted granted Critical
Publication of FR1169760A publication Critical patent/FR1169760A/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
    • E21D15/325—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 by a clamping 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)
FR1169760D 1956-03-19 1957-03-18 multi-piece mine prop Expired FR1169760A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1169760X 1956-03-19

Publications (1)

Publication Number Publication Date
FR1169760A true FR1169760A (en) 1959-01-06

Family

ID=7729204

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1169760D Expired FR1169760A (en) 1956-03-19 1957-03-18 multi-piece mine prop

Country Status (1)

Country Link
FR (1) FR1169760A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240184A (en) * 1978-11-02 1980-12-23 Bicc Limited Pipe and cable clamps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240184A (en) * 1978-11-02 1980-12-23 Bicc Limited Pipe and cable clamps

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