FR2220665B1 - - Google Patents

Info

Publication number
FR2220665B1
FR2220665B1 FR7408413A FR7408413A FR2220665B1 FR 2220665 B1 FR2220665 B1 FR 2220665B1 FR 7408413 A FR7408413 A FR 7408413A FR 7408413 A FR7408413 A FR 7408413A FR 2220665 B1 FR2220665 B1 FR 2220665B1
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
FR7408413A
Other versions
FR2220665A1 (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.)
MINE SUPPORT SYST Pty Ltd
Original Assignee
MINE SUPPORT SYST 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
Priority claimed from ZA731578A external-priority patent/ZA731578B/xx
Application filed by MINE SUPPORT SYST Pty Ltd filed Critical MINE SUPPORT SYST Pty Ltd
Publication of FR2220665A1 publication Critical patent/FR2220665A1/fr
Application granted granted Critical
Publication of FR2220665B1 publication Critical patent/FR2220665B1/fr
Expired 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
    • E21D15/18—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with one part resting on a supporting medium, e.g. rubber, sand, bitumen, lead, located in the other part, with or without expulsion or displacement of the medium 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)
  • Vibration Dampers (AREA)
  • Lining And Supports For Tunnels (AREA)
FR7408413A 1973-03-07 1974-03-06 Expired FR2220665B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA731578A ZA731578B (en) 1973-03-07 1973-03-07 Compressible mine supports
ZA735579 1973-08-15

Publications (2)

Publication Number Publication Date
FR2220665A1 FR2220665A1 (fr) 1974-10-04
FR2220665B1 true FR2220665B1 (fr) 1978-01-06

Family

ID=27131073

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7408413A Expired FR2220665B1 (fr) 1973-03-07 1974-03-06

Country Status (7)

Country Link
JP (1) JPS5040401A (fr)
AT (1) AT332343B (fr)
AU (1) AU6632974A (fr)
BR (1) BR7401725D0 (fr)
DE (1) DE2410976A1 (fr)
FR (1) FR2220665B1 (fr)
ZM (1) ZM4574A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19503071B4 (de) * 1994-08-25 2004-02-12 Sz Schacht- Und Streckenausbau Gmbh Teleskopstempel für den Einsatz im untertägigen Berg-, Tunnel- und Hochbau
DE60320577T2 (de) * 2002-11-08 2009-07-09 Aveng (Afrika) Ltd. Grubenstempel
US8851805B2 (en) * 2012-08-30 2014-10-07 Burrell Mining Products, Inc. Telescopic mine roof support
US20170130580A1 (en) * 2012-08-30 2017-05-11 Burrell Mining Products, Inc. Telescopic mine roof support
US9611738B2 (en) 2014-08-27 2017-04-04 Burrell Mining Products, Inc. Ventilated mine roof support
US9903203B2 (en) 2014-08-27 2018-02-27 Burrell Mining Products, Inc. Ventilated mine roof support
WO2018017948A1 (fr) * 2016-07-21 2018-01-25 Burrell Mining Products, Inc. Support de toit de mine télescopique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB941768A (en) * 1961-03-06 1963-11-13 Dowty Mining Equipment Ltd Telescopic pit props having external guard shrouds
FR1316824A (fr) * 1962-03-02 1963-02-01 Cadre pour l'exploitation de mines
GB1016292A (en) * 1963-05-15 1966-01-12 Stewarts & Lloyds Ltd A yielding strut
GB1227359A (fr) * 1968-04-01 1971-04-07

Also Published As

Publication number Publication date
JPS5040401A (fr) 1975-04-14
DE2410976A1 (de) 1974-09-12
ATA188774A (de) 1976-01-15
AT332343B (de) 1976-09-27
FR2220665A1 (fr) 1974-10-04
ZM4574A1 (en) 1975-06-23
AU6632974A (en) 1975-09-11
BR7401725D0 (pt) 1974-11-19

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Legal Events

Date Code Title Description
ST Notification of lapse