FR45248E - étançon de mines - Google Patents

étançon de mines

Info

Publication number
FR45248E
FR45248E FR45248DA FR45248E FR 45248 E FR45248 E FR 45248E FR 45248D A FR45248D A FR 45248DA FR 45248 E FR45248 E FR 45248E
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
English (en)
Inventor
Heinrich Toussaint
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.)
Bochumer Eisenhuette Heintzmann GmbH and Co KG
Original Assignee
Bochumer Eisenhuette Heintzmann GmbH and Co KG
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 Bochumer Eisenhuette Heintzmann GmbH and Co KG filed Critical Bochumer Eisenhuette Heintzmann GmbH and Co KG
Application granted granted Critical
Publication of FR45248E publication Critical patent/FR45248E/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
    • E21D15/28—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)
FR45248D 1934-09-11 1934-09-11 étançon de mines Expired FR45248E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR45248T 1934-09-11

Publications (1)

Publication Number Publication Date
FR45248E true FR45248E (fr) 1935-07-17

Family

ID=8681016

Family Applications (1)

Application Number Title Priority Date Filing Date
FR45248D Expired FR45248E (fr) 1934-09-11 1934-09-11 étançon de mines

Country Status (1)

Country Link
FR (1) FR45248E (fr)

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