AU1008392A - Yieldable roof support system - Google Patents

Yieldable roof support system

Info

Publication number
AU1008392A
AU1008392A AU10083/92A AU1008392A AU1008392A AU 1008392 A AU1008392 A AU 1008392A AU 10083/92 A AU10083/92 A AU 10083/92A AU 1008392 A AU1008392 A AU 1008392A AU 1008392 A AU1008392 A AU 1008392A
Authority
AU
Australia
Prior art keywords
support system
roof support
yieldable
yieldable roof
support
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.)
Granted
Application number
AU10083/92A
Other versions
AU651653B2 (en
Inventor
Ray Brandon
Thomas Herbst
Khaled Shawwaf
Johann Wlodkowski
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.)
Walter Bau AG
Original Assignee
Dyckerhoff and 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 and Widmann AG filed Critical Dyckerhoff and Widmann AG
Publication of AU1008392A publication Critical patent/AU1008392A/en
Application granted granted Critical
Publication of AU651653B2 publication Critical patent/AU651653B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • E21D15/16—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)
AU10083/92A 1991-01-22 1992-01-07 Yieldable roof support system Ceased AU651653B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64500091A 1991-01-22 1991-01-22
US645000 1991-01-22

Publications (2)

Publication Number Publication Date
AU1008392A true AU1008392A (en) 1992-07-30
AU651653B2 AU651653B2 (en) 1994-07-28

Family

ID=24587241

Family Applications (1)

Application Number Title Priority Date Filing Date
AU10083/92A Ceased AU651653B2 (en) 1991-01-22 1992-01-07 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
GB9200725D0 (en) 1992-03-11
PL293251A1 (en) 1992-10-05
ZA92159B (en) 1992-10-28
FR2671829A1 (en) 1992-07-24
AU651653B2 (en) 1994-07-28
GB2252114A (en) 1992-07-29
CA2059575A1 (en) 1992-07-23

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired