GB2230043B - A roof support and a roof support assenbly - Google Patents

A roof support and a roof support assenbly

Info

Publication number
GB2230043B
GB2230043B GB9007666A GB9007666A GB2230043B GB 2230043 B GB2230043 B GB 2230043B GB 9007666 A GB9007666 A GB 9007666A GB 9007666 A GB9007666 A GB 9007666A GB 2230043 B GB2230043 B GB 2230043B
Authority
GB
United Kingdom
Prior art keywords
roof support
assenbly
roof
support
support assenbly
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 - Fee Related
Application number
GB9007666A
Other versions
GB2230043A (en
GB9007666D0 (en
Inventor
Richard Arthur Naylor
Peter John Green
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.)
MECO FACE END SYSTEMS Ltd
Original Assignee
MECO FACE END SYSTEMS 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 MECO FACE END SYSTEMS Ltd filed Critical MECO FACE END SYSTEMS Ltd
Publication of GB9007666D0 publication Critical patent/GB9007666D0/en
Publication of GB2230043A publication Critical patent/GB2230043A/en
Application granted granted Critical
Publication of GB2230043B publication Critical patent/GB2230043B/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
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • 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
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
GB9007666A 1989-04-05 1990-04-04 A roof support and a roof support assenbly Expired - Fee Related GB2230043B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898907637A GB8907637D0 (en) 1989-04-05 1989-04-05 A gate end roof support assembly

Publications (3)

Publication Number Publication Date
GB9007666D0 GB9007666D0 (en) 1990-05-30
GB2230043A GB2230043A (en) 1990-10-10
GB2230043B true GB2230043B (en) 1993-03-24

Family

ID=10654484

Family Applications (2)

Application Number Title Priority Date Filing Date
GB898907637A Pending GB8907637D0 (en) 1989-04-05 1989-04-05 A gate end roof support assembly
GB9007666A Expired - Fee Related GB2230043B (en) 1989-04-05 1990-04-04 A roof support and a roof support assenbly

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB898907637A Pending GB8907637D0 (en) 1989-04-05 1989-04-05 A gate end roof support assembly

Country Status (1)

Country Link
GB (2) GB8907637D0 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2006864A (en) * 1977-10-08 1979-05-10 Bochumer Eisen Heintzmann Self-advancing auxiliary support for the transition area longwall gallery
GB2191236A (en) * 1986-06-04 1987-12-09 Gullick Dobson Ltd Movable hydraulic jacks on mine roof support

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2006864A (en) * 1977-10-08 1979-05-10 Bochumer Eisen Heintzmann Self-advancing auxiliary support for the transition area longwall gallery
GB2191236A (en) * 1986-06-04 1987-12-09 Gullick Dobson Ltd Movable hydraulic jacks on mine roof support

Also Published As

Publication number Publication date
GB2230043A (en) 1990-10-10
GB9007666D0 (en) 1990-05-30
GB8907637D0 (en) 1989-05-17

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Legal Events

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

Effective date: 19940404