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AU9152682A - Excessive pressure relief in mine prop - Google Patents

Excessive pressure relief in mine prop

Info

Publication number
AU9152682A
AU9152682A AU91526/82A AU9152682A AU9152682A AU 9152682 A AU9152682 A AU 9152682A AU 91526/82 A AU91526/82 A AU 91526/82A AU 9152682 A AU9152682 A AU 9152682A AU 9152682 A AU9152682 A AU 9152682A
Authority
AU
Australia
Prior art keywords
pressure relief
excessive pressure
mine prop
prop
mine
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.)
Abandoned
Application number
AU91526/82A
Inventor
Tamas Kovacs
Otto Lukonits
Miklos Petrassy
Csaba Pinter
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of AU9152682A publication Critical patent/AU9152682A/en
Abandoned 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
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic 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)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)
  • Prostheses (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
AU91526/82A 1981-12-15 1982-12-14 Excessive pressure relief in mine prop Abandoned AU9152682A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU813767A HU183739B (en) 1981-12-15 1981-12-15 Hydraulic cylinder of combination operation particularly prop
HU376781 1981-12-15

Publications (1)

Publication Number Publication Date
AU9152682A true AU9152682A (en) 1983-06-23

Family

ID=10965396

Family Applications (1)

Application Number Title Priority Date Filing Date
AU91526/82A Abandoned AU9152682A (en) 1981-12-15 1982-12-14 Excessive pressure relief in mine prop

Country Status (9)

Country Link
JP (1) JPS58131401A (en)
AU (1) AU9152682A (en)
CS (1) CS241518B2 (en)
DE (2) DE3246481A1 (en)
FR (1) FR2518163A1 (en)
GB (1) GB2111594B (en)
HU (1) HU183739B (en)
PL (1) PL239587A1 (en)
ZA (1) ZA829170B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3410269A1 (en) * 1984-03-21 1985-09-26 Ecker Maschinenbau GmbH, 6680 Neunkirchen Hydraulic pit prop
PL254324A1 (en) * 1985-07-01 1987-03-09 Katowickie Gwarectwo Weglowe K Roof support for use in crumpable beds
AU2789895A (en) * 1994-06-13 1996-01-05 Contitech Luftfedersysteme Gmbh Mine prop
AU9043298A (en) * 1997-08-12 1999-03-01 Chengeta, Cuthbert A pre-stressing device for a mine prop

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968782C (en) * 1949-05-10 1958-04-10 Kronprinz Ag Hydraulic pit ram
US2753036A (en) * 1952-03-06 1956-07-03 Joy Mfg Co Mine roof support-equipped mining apparatus
NL251933A (en) * 1959-07-03
US3191506A (en) * 1962-03-19 1965-06-29 Ledeen Inc Hydropneumatic prop
US3410549A (en) * 1966-07-05 1968-11-12 Edward G. Cheak Vehicle suspension
DE1959109U (en) * 1966-12-16 1967-04-27 Kloeckner Werke Ag HYDRAULIC PIT STAMP.
FR2181525B1 (en) * 1972-04-27 1976-10-29 Gratzmuller Jean Louis
GB1436416A (en) * 1972-08-11 1976-05-19 Zaklady K Mechanizacyjne Przem Mine support
FR2300894A1 (en) * 1975-02-12 1976-09-10 Bennes Marrel Shock absorber for sledge mounted mine roof support - is membrane pressure accumulator housed inside piston of actuator strut
AT339237B (en) * 1975-09-09 1977-10-10 Voest Ag HYDRAULIC PIT STAMP

Also Published As

Publication number Publication date
HU183739B (en) 1984-05-28
PL239587A1 (en) 1983-08-01
DE3246481A1 (en) 1983-06-23
ZA829170B (en) 1983-10-26
CS241518B2 (en) 1986-03-13
JPS58131401A (en) 1983-08-05
DE8235289U1 (en) 1986-06-05
CS914282A2 (en) 1985-08-15
GB2111594B (en) 1986-02-05
FR2518163A1 (en) 1983-06-17
GB2111594A (en) 1983-07-06

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