FR2531485B3 - - Google Patents

Info

Publication number
FR2531485B3
FR2531485B3 FR8308631A FR8308631A FR2531485B3 FR 2531485 B3 FR2531485 B3 FR 2531485B3 FR 8308631 A FR8308631 A FR 8308631A FR 8308631 A FR8308631 A FR 8308631A FR 2531485 B3 FR2531485 B3 FR 2531485B3
Authority
FR
France
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
FR8308631A
Other languages
French (fr)
Other versions
FR2531485A1 (fr
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.)
BOTHA RAYMOND
Original Assignee
BOTHA RAYMOND
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 BOTHA RAYMOND filed Critical BOTHA RAYMOND
Publication of FR2531485A1 publication Critical patent/FR2531485A1/fr
Application granted granted Critical
Publication of FR2531485B3 publication Critical patent/FR2531485B3/fr
Granted 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
    • E21D15/02—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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
FR8308631A 1982-08-06 1983-05-25 Etai de bois pour mines Granted FR2531485A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA825699 1982-08-06

Publications (2)

Publication Number Publication Date
FR2531485A1 FR2531485A1 (fr) 1984-02-10
FR2531485B3 true FR2531485B3 (enExample) 1985-05-10

Family

ID=25576203

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8308631A Granted FR2531485A1 (fr) 1982-08-06 1983-05-25 Etai de bois pour mines

Country Status (6)

Country Link
US (1) US4915339A (enExample)
AU (1) AU554264B2 (enExample)
CA (1) CA1190055A (enExample)
DE (1) DE3315243A1 (enExample)
FR (1) FR2531485A1 (enExample)
GB (1) GB2125465B (enExample)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2062879C (en) * 1991-03-13 2005-04-19 Frans Roelof Petrus Pienaar Yieldable load support
AU681729B2 (en) * 1994-01-13 1997-09-04 Hl & H Timber Products (Proprietary) Limited Support prop assemblies
WO2001014692A1 (en) * 1999-08-20 2001-03-01 Jan Hendrik Woller Yielding mine prop
US6910834B2 (en) * 2003-05-27 2005-06-28 Burrell Mining Products, Inc. Mine prop
US8851805B2 (en) 2012-08-30 2014-10-07 Burrell Mining Products, Inc. Telescopic mine roof support
US9903203B2 (en) 2014-08-27 2018-02-27 Burrell Mining Products, Inc. Ventilated mine roof support
US9611738B2 (en) 2014-08-27 2017-04-04 Burrell Mining Products, Inc. Ventilated mine roof support
US10774641B2 (en) * 2016-02-24 2020-09-15 Micon Load support drum with resilient core member
US11053683B2 (en) * 2018-01-24 2021-07-06 Strata Products Worldwide, Llc Apparatus for controlling yield performance of props for roofs, and methods
US10883366B2 (en) 2018-10-24 2021-01-05 Crosscut Enterprises LLC Mine roof support

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE83945C (enExample) *
GB191228784A (en) * 1912-05-20 1913-01-30 Alwin Lantzsch Improvements in Miners' Props.
GB118969A (en) * 1918-01-05 1918-09-19 Mark Fryar Improvements in Pit Props.
GB319091A (en) * 1928-07-09 1929-09-19 Frank Stuart Atkinson Pit and like props and shores
GB814350A (en) * 1956-12-13 1959-06-03 Karl Theodor Jasper Improvements in roof supports for mine workings
DE1238420B (de) * 1964-11-04 1967-04-13 Paurat F Stempel aus Holz fuer den Ausbau von Untertageraeumen, insbesondere fuer den Streckenausbau
DE3066863D1 (en) * 1979-11-02 1984-04-12 Mine Support Syst Pty Ltd Timber prop
US4534531A (en) * 1980-07-22 1985-08-13 Brown Allan H G Elongated prop for supporting a load

Also Published As

Publication number Publication date
US4915339A (en) 1990-04-10
CA1190055A (en) 1985-07-09
GB2125465A (en) 1984-03-07
AU554264B2 (en) 1986-08-14
FR2531485A1 (fr) 1984-02-10
GB8310725D0 (en) 1983-05-25
AU1403483A (en) 1984-02-09
DE3315243A1 (de) 1984-04-05
GB2125465B (en) 1986-03-05

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Legal Events

Date Code Title Description
TP Transmission of property