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FR923323A - étançon de mine télescopique - Google Patents

étançon de mine télescopique

Info

Publication number
FR923323A
FR923323A FR923323DA FR923323A FR 923323 A FR923323 A FR 923323A FR 923323D A FR923323D A FR 923323DA FR 923323 A FR923323 A FR 923323A
Authority
FR
France
Prior art keywords
mine prop
telescopic
telescopic mine
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)
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.)
Directie van de Staatsmijnen in Limburg
Original Assignee
Directie van de Staatsmijnen in Limburg
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 Directie van de Staatsmijnen in Limburg filed Critical Directie van de Staatsmijnen in Limburg
Application granted granted Critical
Publication of FR923323A publication Critical patent/FR923323A/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)
  • Clamps And Clips (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
FR923323D 1944-01-13 1946-02-26 étançon de mine télescopique Expired FR923323A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL114704A NL60450C (nl) 1944-01-13 1944-01-13 Metalen mijnstut met in elkaar schuifbare boven-en onderstut

Publications (1)

Publication Number Publication Date
FR923323A true FR923323A (fr) 1947-07-03

Family

ID=1815791

Family Applications (1)

Application Number Title Priority Date Filing Date
FR923323D Expired FR923323A (fr) 1944-01-13 1946-02-26 étançon de mine télescopique

Country Status (4)

Country Link
BE (1) BE463207A (fr)
FR (1) FR923323A (fr)
GB (1) GB609493A (fr)
NL (1) NL60450C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972849C (de) * 1950-09-09 1959-10-08 Le Progres Charbonnier Prochar Grubenstempel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972849C (de) * 1950-09-09 1959-10-08 Le Progres Charbonnier Prochar Grubenstempel

Also Published As

Publication number Publication date
GB609493A (en) 1948-10-01
NL60450C (nl) 1947-12-16
BE463207A (nl) 1946-03-30

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