FR1363676A - Perfectionnements relatifs à des étais hydrauliques - Google Patents

Perfectionnements relatifs à des étais hydrauliques

Info

Publication number
FR1363676A
FR1363676A FR941758A FR941758A FR1363676A FR 1363676 A FR1363676 A FR 1363676A FR 941758 A FR941758 A FR 941758A FR 941758 A FR941758 A FR 941758A FR 1363676 A FR1363676 A FR 1363676A
Authority
FR
France
Prior art keywords
improvements relating
hydraulic props
props
hydraulic
relating
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
FR941758A
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.)
Dobson Ltd W E & F
WE&F Dobson Ltd
Original Assignee
Dobson Ltd W E & F
WE&F Dobson 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 GB29288/62A external-priority patent/GB1030574A/en
Application filed by Dobson Ltd W E & F, WE&F Dobson Ltd filed Critical Dobson Ltd W E & F
Priority to FR941758A priority Critical patent/FR1363676A/fr
Application granted granted Critical
Publication of FR1363676A publication Critical patent/FR1363676A/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

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)
FR941758A 1962-07-31 1963-07-17 Perfectionnements relatifs à des étais hydrauliques Expired FR1363676A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR941758A FR1363676A (fr) 1962-07-31 1963-07-17 Perfectionnements relatifs à des étais hydrauliques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB29288/62A GB1030574A (en) 1962-07-31 1962-07-31 Improvements in or relating to hydraulic props
FR941758A FR1363676A (fr) 1962-07-31 1963-07-17 Perfectionnements relatifs à des étais hydrauliques

Publications (1)

Publication Number Publication Date
FR1363676A true FR1363676A (fr) 1964-06-12

Family

ID=26202440

Family Applications (1)

Application Number Title Priority Date Filing Date
FR941758A Expired FR1363676A (fr) 1962-07-31 1963-07-17 Perfectionnements relatifs à des étais hydrauliques

Country Status (1)

Country Link
FR (1) FR1363676A (fr)

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