NL73200C - - Google Patents

Info

Publication number
NL73200C
NL73200C NL73200DA NL73200C NL 73200 C NL73200 C NL 73200C NL 73200D A NL73200D A NL 73200DA NL 73200 C NL73200 C NL 73200C
Authority
NL
Netherlands
Application number
Publication of NL73200C publication Critical patent/NL73200C/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
    • E21D17/0213—Assembling devices for pivoting caps upwardly

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)
NL73200D NL73200C (pm)

Publications (1)

Publication Number Publication Date
NL73200C true NL73200C (pm)

Family

ID=1824096

Family Applications (1)

Application Number Title Priority Date Filing Date
NL73200D NL73200C (pm)

Country Status (1)

Country Link
NL (1) NL73200C (pm)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2991104A (en) * 1948-07-08 1961-07-04 Eisenwerk Wanheim G M B H Fa Connecting structure for beams of a roof support or the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2991104A (en) * 1948-07-08 1961-07-04 Eisenwerk Wanheim G M B H Fa Connecting structure for beams of a roof support or the like

Similar Documents

Publication Publication Date Title
US2991103A (en) Connecting structure for beams of a roof support or the like
DE833937C (de) Kappenverbindung fuer den Strebausbau
US2915328A (en) Bars for supporting the roof in mines and for like purposes
GB722202A (en) Improvements in lagging members for mine galleries and the like
US2729945A (en) Mine filling frame structure comprising props and pivotally connected girders
FR1074334A (fr) Bèle, spécialement pour tailles de faible hauteur
FR1135845A (fr) Chapeau de boisage utilisable pour l'avancement du soutènement de la taille notamment dans les mines
US3018126A (en) Connecting structure for beams of a roof support or the like
US3614141A (en) Hinge connections
US3762172A (en) Mine roof support bar assemblies
DE974883C (de) Kappen-Gelenkverbindung fuer den Strebausbau
DE977597C (de) Ausbaukappe
GB794008A (en) Roof bar for mine roof support systems
DE1033163B (de) Vorrichtung zum Versteifen der Gelenkverbindung zweier Grubenausbaukappen
DE1127301B (de) Kappenverbindung fuer den Strebausbau
DE1189939B (de) Gelenkverbindung fuer Grubenausbaukappen
BE503400A (pm)
DE1188024B (de) Kappenverbindung fuer den Strebausbau
NL73200C (pm)