FR60553E - mine prop - Google Patents

mine prop

Info

Publication number
FR60553E
FR60553E FR60553DA FR60553E FR 60553 E FR60553 E FR 60553E FR 60553D A FR60553D A FR 60553DA FR 60553 E FR60553 E FR 60553E
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
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 FR60553E publication Critical patent/FR60553E/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)
FR60553D 1950-01-12 1950-01-12 mine prop Expired FR60553E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR60553T 1950-01-12

Publications (1)

Publication Number Publication Date
FR60553E true FR60553E (en) 1954-11-09

Family

ID=8694242

Family Applications (1)

Application Number Title Priority Date Filing Date
FR60553D Expired FR60553E (en) 1950-01-12 1950-01-12 mine prop

Country Status (1)

Country Link
FR (1) FR60553E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113638752A (en) * 2021-09-09 2021-11-12 西安经发城市更新建设投资有限公司 Prefabricated bracket structure of electric power tunnel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113638752A (en) * 2021-09-09 2021-11-12 西安经发城市更新建设投资有限公司 Prefabricated bracket structure of electric power tunnel

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