JPS5040401A - - Google Patents

Info

Publication number
JPS5040401A
JPS5040401A JP49026689A JP2668974A JPS5040401A JP S5040401 A JPS5040401 A JP S5040401A JP 49026689 A JP49026689 A JP 49026689A JP 2668974 A JP2668974 A JP 2668974A JP S5040401 A JPS5040401 A JP S5040401A
Authority
JP
Japan
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.)
Pending
Application number
JP49026689A
Other languages
Japanese (ja)
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 filed Critical
Publication of JPS5040401A publication Critical patent/JPS5040401A/ja
Pending 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)
JP49026689A 1973-03-07 1974-03-07 Pending JPS5040401A (enrdf_load_stackoverflow)

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 (1)

Publication Number Publication Date
JPS5040401A true JPS5040401A (enrdf_load_stackoverflow) 1975-04-14

Family

ID=27131073

Family Applications (1)

Application Number Title Priority Date Filing Date
JP49026689A Pending JPS5040401A (enrdf_load_stackoverflow) 1973-03-07 1974-03-07

Country Status (7)

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

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
ATE393299T1 (de) * 2002-11-08 2008-05-15 Grinaker Lta Ltd Grubenstempel
US20170130580A1 (en) * 2012-08-30 2017-05-11 Burrell Mining Products, Inc. Telescopic mine roof support
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
WO2018017948A1 (en) * 2016-07-21 2018-01-25 Burrell Mining Products, Inc. Telescopic mine roof support

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 (enrdf_load_stackoverflow) * 1968-04-01 1971-04-07

Also Published As

Publication number Publication date
FR2220665A1 (enrdf_load_stackoverflow) 1974-10-04
AU6632974A (en) 1975-09-11
BR7401725D0 (pt) 1974-11-19
ZM4574A1 (en) 1975-06-23
ATA188774A (de) 1976-01-15
DE2410976A1 (de) 1974-09-12
FR2220665B1 (enrdf_load_stackoverflow) 1978-01-06
AT332343B (de) 1976-09-27

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