DE1071630B - - Google Patents

Info

Publication number
DE1071630B
DE1071630B DENDAT1071630D DE1071630DA DE1071630B DE 1071630 B DE1071630 B DE 1071630B DE NDAT1071630 D DENDAT1071630 D DE NDAT1071630D DE 1071630D A DE1071630D A DE 1071630DA DE 1071630 B DE1071630 B DE 1071630B
Authority
DE
Germany
Prior art keywords
bore
valve
section
punch
interior
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.)
Pending
Application number
DENDAT1071630D
Other languages
German (de)
English (en)
Publication date
Publication of DE1071630B publication Critical patent/DE1071630B/de
Pending 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
    • 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)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
DENDAT1071630D Pending DE1071630B (OSRAM)

Publications (1)

Publication Number Publication Date
DE1071630B true DE1071630B (OSRAM) 1959-12-24

Family

ID=596278

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT1071630D Pending DE1071630B (OSRAM)

Country Status (1)

Country Link
DE (1) DE1071630B (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152080B (de) * 1960-02-17 1963-08-01 Salzgitter Maschinen Ag Hydraulischer Grubenstempel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152080B (de) * 1960-02-17 1963-08-01 Salzgitter Maschinen Ag Hydraulischer Grubenstempel

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