AU681729B2 - Support prop assemblies - Google Patents

Support prop assemblies

Info

Publication number
AU681729B2
AU681729B2 AU10093/95A AU1009395A AU681729B2 AU 681729 B2 AU681729 B2 AU 681729B2 AU 10093/95 A AU10093/95 A AU 10093/95A AU 1009395 A AU1009395 A AU 1009395A AU 681729 B2 AU681729 B2 AU 681729B2
Authority
AU
Australia
Prior art keywords
support prop
prop assemblies
assemblies
support
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.)
Ceased
Application number
AU10093/95A
Other versions
AU1009395A (en
Inventor
Lester H Tupper
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.)
HL and H Timber Products Pty Ltd
Original Assignee
HL&H Timber Products Pty Ltd
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 HL&H Timber Products Pty Ltd filed Critical HL&H Timber Products Pty Ltd
Publication of AU1009395A publication Critical patent/AU1009395A/en
Assigned to HL & H TIMBER PRODUCTS (PROPRIETARY) LIMITED reassignment HL & H TIMBER PRODUCTS (PROPRIETARY) LIMITED Alteration of Name(s) of Applicant(s) under S113 Assignors: STRATA PRODUCTS (USA) INC
Application granted granted Critical
Publication of AU681729B2 publication Critical patent/AU681729B2/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
    • E21D15/50—Component parts or details of props
    • E21D15/54—Details of the ends of props
    • E21D15/55—Details of the ends of props of prop heads or feet
    • 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
    • E21D15/02—Non-telescopic 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)
  • Rod-Shaped Construction Members (AREA)
  • Catching Or Destruction (AREA)
AU10093/95A 1994-01-13 1995-01-10 Support prop assemblies Ceased AU681729B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US181308 1980-08-25
US18130894A 1994-01-13 1994-01-13

Publications (2)

Publication Number Publication Date
AU1009395A AU1009395A (en) 1995-07-20
AU681729B2 true AU681729B2 (en) 1997-09-04

Family

ID=22663738

Family Applications (1)

Application Number Title Priority Date Filing Date
AU10093/95A Ceased AU681729B2 (en) 1994-01-13 1995-01-10 Support prop assemblies

Country Status (4)

Country Link
AU (1) AU681729B2 (en)
CA (1) CA2140121A1 (en)
GB (1) GB2285643B (en)
PL (1) PL306755A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU9043298A (en) * 1997-08-12 1999-03-01 Chengeta, Cuthbert A pre-stressing device for a mine prop
US11053683B2 (en) * 2018-01-24 2021-07-06 Strata Products Worldwide, Llc Apparatus for controlling yield performance of props for roofs, and methods

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132248A (en) * 1982-11-19 1984-07-04 H L & H Timber Products Timber mine prop
US4915339A (en) * 1982-08-06 1990-04-10 H L & H Timer Products (Proprietary) Limited Mine prop

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4915339A (en) * 1982-08-06 1990-04-10 H L & H Timer Products (Proprietary) Limited Mine prop
GB2132248A (en) * 1982-11-19 1984-07-04 H L & H Timber Products Timber mine prop

Also Published As

Publication number Publication date
GB9500499D0 (en) 1995-03-01
GB2285643A (en) 1995-07-19
AU1009395A (en) 1995-07-20
PL306755A1 (en) 1995-07-24
GB2285643B (en) 1997-07-02
CA2140121A1 (en) 1995-07-14

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Legal Events

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