FR1376822A - étançon télescopique - Google Patents

étançon télescopique

Info

Publication number
FR1376822A
FR1376822A FR950865A FR950865A FR1376822A FR 1376822 A FR1376822 A FR 1376822A FR 950865 A FR950865 A FR 950865A FR 950865 A FR950865 A FR 950865A FR 1376822 A FR1376822 A FR 1376822A
Authority
FR
France
Prior art keywords
telescopic prop
prop
telescopic
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
FR950865A
Other languages
English (en)
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.)
Guardian Mining Props Ltd
Original Assignee
Guardian Mining Props 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
Priority claimed from GB39568/62A external-priority patent/GB1034334A/en
Application filed by Guardian Mining Props Ltd filed Critical Guardian Mining Props Ltd
Priority to FR950865A priority Critical patent/FR1376822A/fr
Application granted granted Critical
Publication of FR1376822A publication Critical patent/FR1376822A/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
    • E21D15/50—Component parts or details of props
    • E21D15/54—Details of the ends of props
    • E21D15/55—Details of the ends of props of prop heads or feet
    • 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
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/30—Telescopic props with parts held relatively to each other by friction or gripping by means expanded or contracted by pressure applied through the medium of a fluid or quasi- fluid, e.g. rubber
    • E21D15/306—Telescopic props with parts held relatively to each other by friction or gripping by means expanded or contracted by pressure applied through the medium of a fluid or quasi- fluid, e.g. rubber by means of a liquid
    • 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)
FR950865A 1962-10-19 1963-10-17 étançon télescopique Expired FR1376822A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR950865A FR1376822A (fr) 1962-10-19 1963-10-17 étançon télescopique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB39568/62A GB1034334A (en) 1962-10-19 1962-10-19 Telescopic pit prop
FR950865A FR1376822A (fr) 1962-10-19 1963-10-17 étançon télescopique

Publications (1)

Publication Number Publication Date
FR1376822A true FR1376822A (fr) 1964-10-31

Family

ID=26203928

Family Applications (1)

Application Number Title Priority Date Filing Date
FR950865A Expired FR1376822A (fr) 1962-10-19 1963-10-17 étançon télescopique

Country Status (1)

Country Link
FR (1) FR1376822A (fr)

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