FR1414425A - hydraulic prop - Google Patents

hydraulic prop

Info

Publication number
FR1414425A
FR1414425A FR995383A FR995383A FR1414425A FR 1414425 A FR1414425 A FR 1414425A FR 995383 A FR995383 A FR 995383A FR 995383 A FR995383 A FR 995383A FR 1414425 A FR1414425 A FR 1414425A
Authority
FR
France
Prior art keywords
hydraulic prop
prop
hydraulic
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
FR995383A
Other languages
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.)
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 GB4573163A external-priority patent/GB1085392A/en
Application filed by Dobson Ltd W E & F, WE&F Dobson Ltd filed Critical Dobson Ltd W E & F
Priority to FR995383A priority Critical patent/FR1414425A/en
Application granted granted Critical
Publication of FR1414425A publication Critical patent/FR1414425A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
FR995383A 1963-11-20 1964-11-18 hydraulic prop Expired FR1414425A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR995383A FR1414425A (en) 1963-11-20 1964-11-18 hydraulic prop

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4573163A GB1085392A (en) 1963-11-20 1963-11-20 Improvements in hydraulic props
FR995383A FR1414425A (en) 1963-11-20 1964-11-18 hydraulic prop

Publications (1)

Publication Number Publication Date
FR1414425A true FR1414425A (en) 1965-10-15

Family

ID=26211211

Family Applications (1)

Application Number Title Priority Date Filing Date
FR995383A Expired FR1414425A (en) 1963-11-20 1964-11-18 hydraulic prop

Country Status (1)

Country Link
FR (1) FR1414425A (en)

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