NL6414602A - - Google Patents

Info

Publication number
NL6414602A
NL6414602A NL6414602A NL6414602A NL6414602A NL 6414602 A NL6414602 A NL 6414602A NL 6414602 A NL6414602 A NL 6414602A NL 6414602 A NL6414602 A NL 6414602A NL 6414602 A NL6414602 A NL 6414602A
Authority
NL
Netherlands
Application number
NL6414602A
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
Publication of NL6414602A publication Critical patent/NL6414602A/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E21D23/26—Hydraulic or pneumatic control

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)
  • Fluid-Pressure Circuits (AREA)
NL6414602A 1963-12-24 1964-12-15 NL6414602A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0088877 1963-12-24

Publications (1)

Publication Number Publication Date
NL6414602A true NL6414602A (enrdf_load_html_response) 1965-06-25

Family

ID=7514737

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6414602A NL6414602A (enrdf_load_html_response) 1963-12-24 1964-12-15

Country Status (2)

Country Link
BE (1) BE657410A (enrdf_load_html_response)
NL (1) NL6414602A (enrdf_load_html_response)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2808205C2 (de) * 1978-02-25 1985-10-10 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Hydraulische Steuerung für eine an der Kappe oder an dem Bruchschild eines Schreitausbaus angeordnete Spaltabdeckung

Also Published As

Publication number Publication date
BE657410A (enrdf_load_html_response) 1965-04-16

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