NL251933A - - Google Patents

Info

Publication number
NL251933A
NL251933A NL251933DA NL251933A NL 251933 A NL251933 A NL 251933A NL 251933D A NL251933D A NL 251933DA NL 251933 A NL251933 A NL 251933A
Authority
NL
Netherlands
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 NL251933A publication Critical patent/NL251933A/xx

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
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props

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)
  • Fluid-Damping Devices (AREA)
  • Safety Valves (AREA)
NL251933D 1959-07-03 NL251933A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1959G0027435 DE1241390B (de) 1959-07-03 1959-07-03 Hydraulischer Grubenstempel

Publications (1)

Publication Number Publication Date
NL251933A true NL251933A (enrdf_load_stackoverflow)

Family

ID=7123209

Family Applications (1)

Application Number Title Priority Date Filing Date
NL251933D NL251933A (enrdf_load_stackoverflow) 1959-07-03

Country Status (4)

Country Link
BE (1) BE592567A (enrdf_load_stackoverflow)
DE (1) DE1241390B (enrdf_load_stackoverflow)
GB (1) GB954660A (enrdf_load_stackoverflow)
NL (1) NL251933A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT339237B (de) * 1975-09-09 1977-10-10 Voest Ag Hydraulischer grubenstempel
HU183739B (en) * 1981-12-15 1984-05-28 Tatabanyai Szenbanyak Hydraulic cylinder of combination operation particularly prop

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE899483C (de) * 1953-11-05 Eisenwerk Wanheim G.M.B.H., Duisburg-Wanheim Eiserner Grubenstempel
DE849682C (de) * 1950-10-05 1952-09-18 August Hoch Aus Zylinder und Kolben bestehende Ausbauvorrichtung mit federnder OElbremse
DE928945C (de) * 1951-06-09 1955-06-16 Eisenwerk Wanheim G M B H Verstellbarer hydraulischer Grubenstempel
DE1000315B (de) * 1956-03-23 1957-01-10 Hermann Schwarz K G Mehrteiliges hydraulisches Stuetzelement fuer den Grubenausbau
BE563275A (enrdf_load_stackoverflow) * 1956-12-27

Also Published As

Publication number Publication date
DE1241390B (de) 1967-06-01
BE592567A (fr) 1960-10-02
GB954660A (en) 1964-04-08

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