ZA92159B - Yieldable roof support system - Google Patents

Yieldable roof support system

Info

Publication number
ZA92159B
ZA92159B ZA92159A ZA92159A ZA92159B ZA 92159 B ZA92159 B ZA 92159B ZA 92159 A ZA92159 A ZA 92159A ZA 92159 A ZA92159 A ZA 92159A ZA 92159 B ZA92159 B ZA 92159B
Authority
ZA
South Africa
Prior art keywords
support system
roof support
yieldable
yieldable roof
support
Prior art date
Application number
ZA92159A
Inventor
Khaled Shawwaf
Shawwaf Khaled
Johann Wlodkowski
Wlodkowski Johann
Thomas Herbst
Herbst Thomas
Ray Brandon
Brandon Ray
Original Assignee
Dyckerhoff & Widmann Ag
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 Dyckerhoff & Widmann Ag filed Critical Dyckerhoff & Widmann Ag
Publication of ZA92159B publication Critical patent/ZA92159B/en

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
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/22—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with member, pin, cross- piece, or the like, ruptured, sheared through, or permanently deformed upon excessive pressure

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)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
ZA92159A 1991-01-22 1992-01-09 Yieldable roof support system ZA92159B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64500091A 1991-01-22 1991-01-22

Publications (1)

Publication Number Publication Date
ZA92159B true ZA92159B (en) 1992-10-28

Family

ID=24587241

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA92159A ZA92159B (en) 1991-01-22 1992-01-09 Yieldable roof support system

Country Status (6)

Country Link
AU (1) AU651653B2 (en)
CA (1) CA2059575A1 (en)
FR (1) FR2671829A1 (en)
GB (1) GB2252114A (en)
PL (1) PL293251A1 (en)
ZA (1) ZA92159B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5314161A (en) * 1992-05-29 1994-05-24 Bochumer Eisenhutte Heintzmann Gmbh & Co. Kg Mine prop
GB2302578B (en) * 1995-06-23 1999-02-17 R G Manufacturing Ltd Nudge bar and energy absorbing device
US9677690B2 (en) 2010-02-08 2017-06-13 Thomas & Betts International, Llc Multi-purpose roof-top support
CN104179366B (en) * 2014-08-21 2016-04-27 四川金锋建设有限公司 Recessed device prevented by large span thin plate

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE875335C (en) * 1950-07-19 1953-04-30 Walter Murmann Flexible multi-part extension stamp
AU542884B2 (en) * 1980-07-31 1985-03-21 Dipl.Ing. Dr. Mont. Franz Powondra Resilient yieldable device
AT376009B (en) * 1982-12-13 1984-10-10 Powondra Franz Dipl Ing Dr METHOD FOR OBTAINING A FLEXIBLE CONNECTION BETWEEN A METALLIC ROD-SHAPED BODY AND A BRACKET THROUGH IT
DE3503012A1 (en) * 1985-01-30 1986-07-31 Dyckerhoff & Widmann AG, 8000 München TENSIONING DEVICE FOR THE TIE LINK OF AN ANCHOR, ESPECIALLY A ROCK ANCHOR

Also Published As

Publication number Publication date
PL293251A1 (en) 1992-10-05
GB9200725D0 (en) 1992-03-11
FR2671829A1 (en) 1992-07-24
CA2059575A1 (en) 1992-07-23
AU1008392A (en) 1992-07-30
AU651653B2 (en) 1994-07-28
GB2252114A (en) 1992-07-29

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