GB8803351D0 - Mine roof supports - Google Patents

Mine roof supports

Info

Publication number
GB8803351D0
GB8803351D0 GB888803351A GB8803351A GB8803351D0 GB 8803351 D0 GB8803351 D0 GB 8803351D0 GB 888803351 A GB888803351 A GB 888803351A GB 8803351 A GB8803351 A GB 8803351A GB 8803351 D0 GB8803351 D0 GB 8803351D0
Authority
GB
United Kingdom
Prior art keywords
mine roof
roof supports
supports
mine
roof
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.)
Granted
Application number
GB888803351A
Other versions
GB2214963A (en
GB2214963B (en
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.)
Gullick Dobson Ltd
Original Assignee
Gullick Dobson 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
Application filed by Gullick Dobson Ltd filed Critical Gullick Dobson Ltd
Priority to GB8803351A priority Critical patent/GB2214963B/en
Publication of GB8803351D0 publication Critical patent/GB8803351D0/en
Publication of GB2214963A publication Critical patent/GB2214963A/en
Application granted granted Critical
Publication of GB2214963B publication Critical patent/GB2214963B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/0427—Shield operating devices; Hinges therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Bridges Or Land Bridges (AREA)
GB8803351A 1988-02-13 1988-02-13 Mine roof supports Expired - Fee Related GB2214963B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8803351A GB2214963B (en) 1988-02-13 1988-02-13 Mine roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8803351A GB2214963B (en) 1988-02-13 1988-02-13 Mine roof supports

Publications (3)

Publication Number Publication Date
GB8803351D0 true GB8803351D0 (en) 1988-03-16
GB2214963A GB2214963A (en) 1989-09-13
GB2214963B GB2214963B (en) 1992-05-06

Family

ID=10631652

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8803351A Expired - Fee Related GB2214963B (en) 1988-02-13 1988-02-13 Mine roof supports

Country Status (1)

Country Link
GB (1) GB2214963B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL3656976T3 (en) 2012-09-14 2024-03-11 Joy Global Underground Mining Llc Cutter head for mining machine
CN113027448B (en) 2016-01-27 2023-11-17 久益环球地下采矿有限责任公司 Mining machine with multiple cutting heads
PE20190494A1 (en) 2016-08-19 2019-04-09 Joy Global Underground Mining Llc CUTTING AND SUPPORT DEVICE FOR THE SAME
US11391149B2 (en) 2016-08-19 2022-07-19 Joy Global Underground Mining Llc Mining machine with articulating boom and independent material handling system
EP4273364A3 (en) 2016-08-19 2024-03-13 Joy Global Underground Mining LLC Mining machine with articulating boom and independent material handling system
AU2017330397B2 (en) * 2016-09-23 2023-03-02 Joy Global Underground Mining Llc Rock cutting device
EP3814608A4 (en) 2018-07-25 2022-03-23 Joy Global Underground Mining LLC Rock cutting assembly

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2191236B (en) * 1986-06-04 1990-04-04 Gullick Dobson Ltd Mine roof supports
GB2192021B (en) * 1986-06-26 1990-03-21 Gullick Dobson Ltd A roof engaging structure for a mine roof support

Also Published As

Publication number Publication date
GB2214963A (en) 1989-09-13
GB2214963B (en) 1992-05-06

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Legal Events

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

Effective date: 19940213