BE514564A - - Google Patents

Info

Publication number
BE514564A
BE514564A BE514564DA BE514564A BE 514564 A BE514564 A BE 514564A BE 514564D A BE514564D A BE 514564DA BE 514564 A BE514564 A BE 514564A
Authority
BE
Belgium
Application number
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.)
Publication of BE514564A publication Critical patent/BE514564A/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/01—Caps for supporting mine roofs characterised by the shape of the cap, e.g. of specified cross-section

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
BE514564D 1952-10-01 BE514564A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE769430X 1952-10-01

Publications (1)

Publication Number Publication Date
BE514564A true BE514564A (xx)

Family

ID=3880140

Family Applications (3)

Application Number Title Priority Date Filing Date
BE514563D BE514563A (xx) 1952-10-01
BE514564D BE514564A (xx) 1952-10-01
BE531878D BE531878A (xx) 1952-10-01

Family Applications Before (1)

Application Number Title Priority Date Filing Date
BE514563D BE514563A (xx) 1952-10-01

Family Applications After (1)

Application Number Title Priority Date Filing Date
BE531878D BE531878A (xx) 1952-10-01

Country Status (4)

Country Link
BE (3) BE531878A (xx)
DE (1) DE1102078B (xx)
FR (1) FR1087566A (xx)
GB (1) GB769430A (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2959924A (en) * 1954-01-29 1960-11-15 Groetschel Karl Maria Connection for lagging irons

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5839690A (en) * 1990-06-11 1998-11-24 Blanchette; David John Inertial acceleration aircraft
WO2006076828A1 (fr) * 2005-01-21 2006-07-27 Zeyu Li Support de toit hydraulique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2959924A (en) * 1954-01-29 1960-11-15 Groetschel Karl Maria Connection for lagging irons

Also Published As

Publication number Publication date
DE1102078B (de) 1961-03-16
FR1087566A (fr) 1955-02-25
BE514563A (xx)
BE531878A (xx)
GB769430A (en) 1957-03-06

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