GB2111594B - Hydraulic cylinder, in particular prop, with a combined function - Google Patents

Hydraulic cylinder, in particular prop, with a combined function

Info

Publication number
GB2111594B
GB2111594B GB08235619A GB8235619A GB2111594B GB 2111594 B GB2111594 B GB 2111594B GB 08235619 A GB08235619 A GB 08235619A GB 8235619 A GB8235619 A GB 8235619A GB 2111594 B GB2111594 B GB 2111594B
Authority
GB
United Kingdom
Prior art keywords
hydraulic cylinder
combined function
particular prop
prop
combined
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.)
Expired
Application number
GB08235619A
Other versions
GB2111594A (en
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 GB2111594A publication Critical patent/GB2111594A/en
Application granted granted Critical
Publication of GB2111594B publication Critical patent/GB2111594B/en
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
    • E21D15/44—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)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Prostheses (AREA)
GB08235619A 1981-12-15 1982-12-14 Hydraulic cylinder, in particular prop, with a combined function Expired GB2111594B (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
GB2111594A GB2111594A (en) 1983-07-06
GB2111594B true GB2111594B (en) 1986-02-05

Family

ID=10965396

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08235619A Expired GB2111594B (en) 1981-12-15 1982-12-14 Hydraulic cylinder, in particular prop, with a combined function

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
WO1995034743A1 (en) * 1994-06-13 1995-12-21 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
CS914282A2 (en) 1985-08-15
CS241518B2 (en) 1986-03-13
FR2518163A1 (en) 1983-06-17
AU9152682A (en) 1983-06-23
DE3246481A1 (en) 1983-06-23
ZA829170B (en) 1983-10-26
HU183739B (en) 1984-05-28
GB2111594A (en) 1983-07-06
PL239587A1 (en) 1983-08-01
DE8235289U1 (en) 1986-06-05
JPS58131401A (en) 1983-08-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19941214