BE526490A - - Google Patents

Info

Publication number
BE526490A
BE526490A BE526490DA BE526490A BE 526490 A BE526490 A BE 526490A BE 526490D A BE526490D A BE 526490DA BE 526490 A BE526490 A BE 526490A
Authority
BE
Belgium
Prior art keywords
piston
lifting device
pressure
valve
pump
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE526490A publication Critical patent/BE526490A/fr

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
    • E21D15/58—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Reciprocating Pumps (AREA)
BE526490D BE526490A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
BE526490A true BE526490A (enrdf_load_stackoverflow)

Family

ID=160437

Family Applications (1)

Application Number Title Priority Date Filing Date
BE526490D BE526490A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
BE (1) BE526490A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126820B (de) * 1956-09-19 1962-04-05 Becorit Grubenausbau Gmbh Hydraulischer Grubenstempel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126820B (de) * 1956-09-19 1962-04-05 Becorit Grubenausbau Gmbh Hydraulischer Grubenstempel

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