NL264813A - - Google Patents

Info

Publication number
NL264813A
NL264813A NL264813DA NL264813A NL 264813 A NL264813 A NL 264813A NL 264813D A NL264813D A NL 264813DA NL 264813 A NL264813 A NL 264813A
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 NL264813A publication Critical patent/NL264813A/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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0069—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices without essential advancing shifting devices
    • 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
    • E21D15/15—Means counteracting entry of dirt; Built-in cleaning devices
    • E21D15/155—Built-in cleaning devices
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Prostheses (AREA)
  • Press Drives And Press Lines (AREA)
NL264813D 1960-05-21 NL264813A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH27933A DE1132878B (de) 1960-05-21 1960-05-21 Hydraulisches Stuetzelement fuer den Grubenausbau

Publications (1)

Publication Number Publication Date
NL264813A true NL264813A (enrdf_load_html_response)

Family

ID=7430954

Family Applications (1)

Application Number Title Priority Date Filing Date
NL264813D NL264813A (enrdf_load_html_response) 1960-05-21

Country Status (4)

Country Link
DE (1) DE1132878B (enrdf_load_html_response)
FR (1) FR1289337A (enrdf_load_html_response)
GB (1) GB972367A (enrdf_load_html_response)
NL (1) NL264813A (enrdf_load_html_response)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL300061A (enrdf_load_html_response) * 1963-08-19

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2136080A (en) * 1934-09-19 1938-11-08 Sullivan Machinery Co Hydraulic abutment device
FR1075691A (fr) * 1953-03-16 1954-10-19 Nouvel étançon
DE1023436B (de) * 1955-11-24 1958-01-30 Hermann Schwarz Kommanditgesel Hydraulischer Grubenstempel
BE557875A (enrdf_load_html_response) * 1956-05-28
DE1024465B (de) * 1957-05-23 1958-02-20 Kronprinz Ag Hydraulischer Grubenstempel

Also Published As

Publication number Publication date
DE1132878B (de) 1962-07-12
FR1289337A (fr) 1962-03-30
GB972367A (en) 1964-10-14

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