BE572255A - - Google Patents

Info

Publication number
BE572255A
BE572255A BE572255A BE572255A BE572255A BE 572255 A BE572255 A BE 572255A BE 572255 A BE572255 A BE 572255A BE 572255 A BE572255 A BE 572255A BE 572255 A BE572255 A BE 572255A
Authority
BE
Belgium
Application number
BE572255A
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 BE572255A publication Critical patent/BE572255A/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
    • E21D15/50—Component parts or details of props
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/515—Particular fluids not covered by any chemical subdivision
    • 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)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)
BE572255A 1957-10-25 1958-10-21 BE572255A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN14244A DE1224684B (de) 1957-10-25 1957-10-25 Hydraulischer Grubenstempel

Publications (1)

Publication Number Publication Date
BE572255A true BE572255A (enrdf_load_html_response) 1958-11-14

Family

ID=7339843

Family Applications (1)

Application Number Title Priority Date Filing Date
BE572255A BE572255A (enrdf_load_html_response) 1957-10-25 1958-10-21

Country Status (4)

Country Link
BE (1) BE572255A (enrdf_load_html_response)
DE (1) DE1224684B (enrdf_load_html_response)
FR (1) FR1207204A (enrdf_load_html_response)
GB (1) GB877345A (enrdf_load_html_response)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357859A (en) * 1981-04-08 1982-11-09 United Technologies Corporation Pressure sensor
IT8223222V0 (it) * 1982-10-18 1982-10-18 Giovanni Trevisan Dispositivo di guida per pistoni di azionatori fluidodinamici, particolarmente del tipo rotante a due pistoni coassiali, muniti di cremagliere.
CN113605941A (zh) * 2021-08-04 2021-11-05 陈立伟 单体螺旋支柱

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
DE1044004B (de) * 1954-05-11 1958-11-20 Maschf Hydraulischer Grubenstempel
DE1009137B (de) * 1955-12-14 1957-05-29 Hermann Schwarz K G Hydraulischer Grubenstempel mit rohrfoermigem Innen- und Aussenteil
BE560360A (enrdf_load_html_response) * 1956-08-29
DE1059383B (de) * 1957-10-15 1959-06-18 Wilhelm Reppel Mehrteiliger hydraulischer Grubenstempel

Also Published As

Publication number Publication date
GB877345A (en) 1961-09-13
FR1207204A (fr) 1960-02-15
DE1224684B (de) 1966-09-15

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