FR445890A - étancon de mine - Google Patents

étancon de mine

Info

Publication number
FR445890A
FR445890A FR445890DA FR445890A FR 445890 A FR445890 A FR 445890A FR 445890D A FR445890D A FR 445890DA FR 445890 A FR445890 A FR 445890A
Authority
FR
France
Prior art keywords
stanchion
mine
mine stanchion
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
English (en)
Inventor
Paul Schulte
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 FR445890A publication Critical patent/FR445890A/fr
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)
FR445890D 1912-07-09 1912-07-09 étancon de mine Expired FR445890A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR445890T 1912-07-09

Publications (1)

Publication Number Publication Date
FR445890A true FR445890A (fr) 1912-11-21

Family

ID=1486725

Family Applications (1)

Application Number Title Priority Date Filing Date
FR445890D Expired FR445890A (fr) 1912-07-09 1912-07-09 étancon de mine

Country Status (1)

Country Link
FR (1) FR445890A (fr)

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