GB1025772A - Hydraulic pit prop - Google Patents

Hydraulic pit prop

Info

Publication number
GB1025772A
GB1025772A GB420663A GB420663A GB1025772A GB 1025772 A GB1025772 A GB 1025772A GB 420663 A GB420663 A GB 420663A GB 420663 A GB420663 A GB 420663A GB 1025772 A GB1025772 A GB 1025772A
Authority
GB
United Kingdom
Prior art keywords
collar
hydraulic
hydraulic pit
feb
pit prop
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
GB420663A
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.)
BWG Bergwerk und Walzwerk Maschinenbau GmbH
Original Assignee
BWG Bergwerk und Walzwerk Maschinenbau GmbH
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 by BWG Bergwerk und Walzwerk Maschinenbau GmbH filed Critical BWG Bergwerk und Walzwerk Maschinenbau GmbH
Publication of GB1025772A publication Critical patent/GB1025772A/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
    • E21D15/14—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)
  • Sealing Devices (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
GB420663A 1962-02-05 1963-02-01 Hydraulic pit prop Expired GB1025772A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0065814 1962-02-05

Publications (1)

Publication Number Publication Date
GB1025772A true GB1025772A (en) 1966-04-14

Family

ID=6974920

Family Applications (1)

Application Number Title Priority Date Filing Date
GB420663A Expired GB1025772A (en) 1962-02-05 1963-02-01 Hydraulic pit prop

Country Status (3)

Country Link
BE (1) BE627892A (fi)
GB (1) GB1025772A (fi)
NL (1) NL277527A (fi)

Also Published As

Publication number Publication date
NL277527A (fi)
BE627892A (fi)

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