BE646930A - - Google Patents

Info

Publication number
BE646930A
BE646930A BE646930A BE646930A BE646930A BE 646930 A BE646930 A BE 646930A BE 646930 A BE646930 A BE 646930A BE 646930 A BE646930 A BE 646930A BE 646930 A BE646930 A BE 646930A
Authority
BE
Belgium
Application number
BE646930A
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 BE646930A publication Critical patent/BE646930A/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
    • E21D15/58—Devices for setting props or chocks
    • E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
    • E21D15/586—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded
    • 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)
  • Nozzles (AREA)
BE646930A 1964-04-17 1964-04-23 BE646930A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6404248A NL6404248A (ja) 1964-04-17 1964-04-17

Publications (1)

Publication Number Publication Date
BE646930A true BE646930A (ja) 1964-08-17

Family

ID=19789862

Family Applications (1)

Application Number Title Priority Date Filing Date
BE646930A BE646930A (ja) 1964-04-17 1964-04-23

Country Status (3)

Country Link
BE (1) BE646930A (ja)
GB (1) GB1024268A (ja)
NL (1) NL6404248A (ja)

Also Published As

Publication number Publication date
GB1024268A (en) 1966-03-30
NL6404248A (ja) 1965-10-18

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