FR1014707A - Perfectionnements aux étais extensibles pour mine - Google Patents

Perfectionnements aux étais extensibles pour mine

Info

Publication number
FR1014707A
FR1014707A FR1014707DA FR1014707A FR 1014707 A FR1014707 A FR 1014707A FR 1014707D A FR1014707D A FR 1014707DA FR 1014707 A FR1014707 A FR 1014707A
Authority
FR
France
Prior art keywords
mine
props
extendable
extendable props
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
English (en)
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mavor and Coulson Ltd
Original Assignee
Mavor and Coulson Ltd
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 by Mavor and Coulson Ltd filed Critical Mavor and Coulson Ltd
Application granted granted Critical
Publication of FR1014707A publication Critical patent/FR1014707A/fr
Expired legal-status Critical Current

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
    • E21D15/45—Hydraulic, pneumatic, or hydraulic-pneumatic props having closed fluid system, e.g. with built-in pumps or accumulators
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G50/00—Production of liquid hydrocarbon mixtures from lower carbon number hydrocarbons, e.g. by oligomerisation
    • C10G50/02—Production of liquid hydrocarbon mixtures from lower carbon number hydrocarbons, e.g. by oligomerisation of hydrocarbon oils for lubricating purposes

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Earth Drilling (AREA)
FR1014707D 1948-08-25 1950-03-15 Perfectionnements aux étais extensibles pour mine Expired FR1014707A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2237248A GB656800A (en) 1948-08-25 1948-08-25 Improvements in or relating to mine props

Publications (1)

Publication Number Publication Date
FR1014707A true FR1014707A (fr) 1952-08-20

Family

ID=10178300

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1014707D Expired FR1014707A (fr) 1948-08-25 1950-03-15 Perfectionnements aux étais extensibles pour mine

Country Status (4)

Country Link
BE (1) BE494657A (en, 2012)
FR (1) FR1014707A (en, 2012)
GB (1) GB656800A (en, 2012)
NL (1) NL69904C (en, 2012)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1195704B (de) * 1963-10-03 1965-07-01 Salzgitter Maschinen Ag Hydraulischer Grubenstempel
CN113685208B (zh) * 2021-07-14 2022-07-22 东北大学 一种流固耦合式多级吸能防冲液压立柱及其工作方法

Also Published As

Publication number Publication date
GB656800A (en) 1951-09-05
NL69904C (en, 2012) 1952-04-13
BE494657A (en, 2012) 1950-07-17

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