FR1289101A - étançon de mine - Google Patents

étançon de mine

Info

Publication number
FR1289101A
FR1289101A FR861302A FR861302A FR1289101A FR 1289101 A FR1289101 A FR 1289101A FR 861302 A FR861302 A FR 861302A FR 861302 A FR861302 A FR 861302A FR 1289101 A FR1289101 A FR 1289101A
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
FR861302A
Other languages
English (en)
Inventor
Karl Gerlach
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
Priority to FR861302A priority Critical patent/FR1289101A/fr
Application granted granted Critical
Publication of FR1289101A publication Critical patent/FR1289101A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
FR861302A 1961-05-09 1961-05-09 étançon de mine Expired FR1289101A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR861302A FR1289101A (fr) 1961-05-09 1961-05-09 étançon de mine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR861302A FR1289101A (fr) 1961-05-09 1961-05-09 étançon de mine

Publications (1)

Publication Number Publication Date
FR1289101A true FR1289101A (fr) 1962-03-30

Family

ID=8754819

Family Applications (1)

Application Number Title Priority Date Filing Date
FR861302A Expired FR1289101A (fr) 1961-05-09 1961-05-09 étançon de mine

Country Status (1)

Country Link
FR (1) FR1289101A (fr)

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