ZA718168B - Hydraulic roof support frames - Google Patents

Hydraulic roof support frames

Info

Publication number
ZA718168B
ZA718168B ZA718168A ZA718168A ZA718168B ZA 718168 B ZA718168 B ZA 718168B ZA 718168 A ZA718168 A ZA 718168A ZA 718168 A ZA718168 A ZA 718168A ZA 718168 B ZA718168 B ZA 718168B
Authority
ZA
South Africa
Prior art keywords
support frames
roof support
hydraulic roof
hydraulic
frames
Prior art date
Application number
ZA718168A
Inventor
J Welzel
H Bull
A Maykemper
Original Assignee
Hemscheidt Maschf Hermann
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 DE19702063466 external-priority patent/DE2063466C3/en
Application filed by Hemscheidt Maschf Hermann filed Critical Hemscheidt Maschf Hermann
Publication of ZA718168B publication Critical patent/ZA718168B/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14—Lining predominantly with metal

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Architecture (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Bridges Or Land Bridges (AREA)
  • Door And Window Frames Mounted To Openings (AREA)
  • Revetment (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Tents Or Canopies (AREA)
ZA718168A 1970-12-23 1971-12-06 Hydraulic roof support frames ZA718168B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702063466 DE2063466C3 (en) 1970-12-23 Hydraulic door frame joint removal

Publications (1)

Publication Number Publication Date
ZA718168B true ZA718168B (en) 1973-08-29

Family

ID=5792006

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA718168A ZA718168B (en) 1970-12-23 1971-12-06 Hydraulic roof support frames

Country Status (6)

Country Link
US (1) US3745772A (en)
JP (1) JPS5136686B1 (en)
FR (1) FR2119373A5 (en)
GB (1) GB1312386A (en)
PL (1) PL77190B1 (en)
ZA (1) ZA718168B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3123970A1 (en) * 1981-06-19 1983-01-05 Röhm GmbH, 6100 Darmstadt "METHOD FOR PRODUCING METHACRYLAMIDES"
GB2123885B (en) * 1982-07-09 1986-02-19 Dowty Mining Equipment Ltd Roof support for use in mines
US5269809A (en) * 1990-07-02 1993-12-14 American Cyanamid Company Locking mechanism for use with a slotted suture anchor
US5538364A (en) * 1995-02-14 1996-07-23 Huntsman; Steven D. Yieldable mine post having a double ball and socket configuration
CN118548076A (en) * 2024-07-29 2024-08-27 广东省建筑设计研究院集团股份有限公司 Conversion braced frame

Also Published As

Publication number Publication date
DE2063466A1 (en) 1972-07-06
DE2063466B2 (en) 1977-01-27
PL77190B1 (en) 1975-04-30
GB1312386A (en) 1973-04-04
US3745772A (en) 1973-07-17
FR2119373A5 (en) 1972-08-04
JPS5136686B1 (en) 1976-10-09

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