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FR1362825A - mine prop fitted with a removable hydraulic locking device - Google Patents

mine prop fitted with a removable hydraulic locking device

Info

Publication number
FR1362825A
FR1362825A FR939453A FR939453A FR1362825A FR 1362825 A FR1362825 A FR 1362825A FR 939453 A FR939453 A FR 939453A FR 939453 A FR939453 A FR 939453A FR 1362825 A FR1362825 A FR 1362825A
Authority
FR
France
Prior art keywords
fitted
locking device
hydraulic locking
mine prop
removable 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
FR939453A
Other languages
French (fr)
Inventor
Karl Gerlach
Hans Gerlach
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
Priority to FR939453A priority Critical patent/FR1362825A/en
Application granted granted Critical
Publication of FR1362825A publication Critical patent/FR1362825A/en
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
    • E21D15/58—Devices for setting props or chocks
    • E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
    • E21D15/586—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded
    • E21D15/588—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded the lock also being activated

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)
FR939453A 1963-06-26 1963-06-26 mine prop fitted with a removable hydraulic locking device Expired FR1362825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR939453A FR1362825A (en) 1963-06-26 1963-06-26 mine prop fitted with a removable hydraulic locking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR939453A FR1362825A (en) 1963-06-26 1963-06-26 mine prop fitted with a removable hydraulic locking device

Publications (1)

Publication Number Publication Date
FR1362825A true FR1362825A (en) 1964-06-05

Family

ID=8806991

Family Applications (1)

Application Number Title Priority Date Filing Date
FR939453A Expired FR1362825A (en) 1963-06-26 1963-06-26 mine prop fitted with a removable hydraulic locking device

Country Status (1)

Country Link
FR (1) FR1362825A (en)

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