FR11141E - Mining prop - Google Patents

Mining prop

Info

Publication number
FR11141E
FR11141E FR11141DA FR11141E FR 11141 E FR11141 E FR 11141E FR 11141D A FR11141D A FR 11141DA FR 11141 E FR11141 E FR 11141E
Authority
FR
France
Prior art keywords
mining prop
prop
mining
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
John Heinrich Eickershoff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 by Individual filed Critical Individual
Application granted granted Critical
Publication of FR11141E publication Critical patent/FR11141E/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
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/18—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with one part resting on a supporting medium, e.g. rubber, sand, bitumen, lead, located in the other part, with or without expulsion or displacement of the medium upon excessive pressure

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)
FR11141D 1908-10-20 1909-06-16 Mining prop Expired FR11141E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR395517T 1908-10-20
FR11141T 1909-06-16

Publications (1)

Publication Number Publication Date
FR11141E true FR11141E (en) 1909-12-09

Family

ID=1353476

Family Applications (1)

Application Number Title Priority Date Filing Date
FR11141D Expired FR11141E (en) 1908-10-20 1909-06-16 Mining prop

Country Status (1)

Country Link
FR (1) FR11141E (en)

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