BR7401725D0 - Aperfeicoamentos em compartimento de carga, e suporte de mina e parafuso de liqacao - Google Patents

Aperfeicoamentos em compartimento de carga, e suporte de mina e parafuso de liqacao

Info

Publication number
BR7401725D0
BR7401725D0 BR1725/74A BR172574A BR7401725D0 BR 7401725 D0 BR7401725 D0 BR 7401725D0 BR 1725/74 A BR1725/74 A BR 1725/74A BR 172574 A BR172574 A BR 172574A BR 7401725 D0 BR7401725 D0 BR 7401725D0
Authority
BR
Brazil
Prior art keywords
load compartment
mine support
liquid screw
screw
liquid
Prior art date
Application number
BR1725/74A
Other languages
English (en)
Portuguese (pt)
Inventor
R Townsend
Original Assignee
Bakke International Sa
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 Bakke International Sa filed Critical Bakke International Sa
Publication of BR7401725D0 publication Critical patent/BR7401725D0/pt

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)
BR1725/74A 1973-03-07 1974-03-07 Aperfeicoamentos em compartimento de carga, e suporte de mina e parafuso de liqacao BR7401725D0 (pt)

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
BR7401725D0 true BR7401725D0 (pt) 1974-11-19

Family

ID=27131073

Family Applications (1)

Application Number Title Priority Date Filing Date
BR1725/74A BR7401725D0 (pt) 1973-03-07 1974-03-07 Aperfeicoamentos em compartimento de carga, e suporte de mina e parafuso de liqacao

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
JPS5040401A (enrdf_load_stackoverflow) 1975-04-14
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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