FR969365A - metal mine prop - Google Patents

metal mine prop

Info

Publication number
FR969365A
FR969365A FR969365DA FR969365A FR 969365 A FR969365 A FR 969365A FR 969365D A FR969365D A FR 969365DA FR 969365 A FR969365 A FR 969365A
Authority
FR
France
Prior art keywords
metal mine
mine prop
prop
metal
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
Alexander Schmidt
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 FR969365A publication Critical patent/FR969365A/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
    • E21D15/36—Telescopic props with parts held relatively to each other by friction or gripping by a tiltable collar surrounding one or both parts
    • 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
    • E21D15/42—Telescopic props with parts held relatively to each other by friction or gripping with special parts to influence the friction
    • 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
    • E21D15/50—Component parts or details of props
    • E21D15/502—Prop bodies characterised by their shape, e.g. of specified cross-section

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)
FR969365D 1946-08-10 1946-08-10 metal mine prop Expired FR969365A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR969365T 1946-08-10

Publications (1)

Publication Number Publication Date
FR969365A true FR969365A (en) 1950-12-19

Family

ID=9501917

Family Applications (1)

Application Number Title Priority Date Filing Date
FR969365D Expired FR969365A (en) 1946-08-10 1946-08-10 metal mine prop

Country Status (1)

Country Link
FR (1) FR969365A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490783A (en) * 1967-06-23 1970-01-20 Ever New Inc Ski boot heel binding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490783A (en) * 1967-06-23 1970-01-20 Ever New Inc Ski boot heel binding device

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