GB2220022B - Mine roof support - Google Patents

Mine roof support

Info

Publication number
GB2220022B
GB2220022B GB8815085A GB8815085A GB2220022B GB 2220022 B GB2220022 B GB 2220022B GB 8815085 A GB8815085 A GB 8815085A GB 8815085 A GB8815085 A GB 8815085A GB 2220022 B GB2220022 B GB 2220022B
Authority
GB
United Kingdom
Prior art keywords
roof support
mine roof
mine
support
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.)
Expired - Fee Related
Application number
GB8815085A
Other versions
GB8815085D0 (en
GB2220022A (en
Inventor
Peter John Green
Richard Arthur Naylor
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.)
DOWTY HUCKNALL Ltd
MECO FACE END SYSTEMS Ltd
Original Assignee
DOWTY HUCKNALL Ltd
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 DOWTY HUCKNALL Ltd, MECO FACE END SYSTEMS Ltd filed Critical DOWTY HUCKNALL Ltd
Priority to GB8815085A priority Critical patent/GB2220022B/en
Publication of GB8815085D0 publication Critical patent/GB8815085D0/en
Publication of GB2220022A publication Critical patent/GB2220022A/en
Application granted granted Critical
Publication of GB2220022B publication Critical patent/GB2220022B/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
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement

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)
  • Body Structure For Vehicles (AREA)
GB8815085A 1988-06-24 1988-06-24 Mine roof support Expired - Fee Related GB2220022B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8815085A GB2220022B (en) 1988-06-24 1988-06-24 Mine roof support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8815085A GB2220022B (en) 1988-06-24 1988-06-24 Mine roof support

Publications (3)

Publication Number Publication Date
GB8815085D0 GB8815085D0 (en) 1988-08-03
GB2220022A GB2220022A (en) 1989-12-28
GB2220022B true GB2220022B (en) 1992-06-10

Family

ID=10639305

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8815085A Expired - Fee Related GB2220022B (en) 1988-06-24 1988-06-24 Mine roof support

Country Status (1)

Country Link
GB (1) GB2220022B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1364221A (en) * 1973-01-18 1974-08-21 Podmoskovny Ni Pk Ugolny Inst Hydraulically controlled roof support
GB1583647A (en) * 1976-09-24 1981-01-28 Huwood Ltd Mine roof supports
GB2082236A (en) * 1980-08-06 1982-03-03 Dowty Mining Equipment Ltd Mine roof support with cantilever extension on roof plate
GB2115048A (en) * 1982-02-02 1983-09-01 Dobson Park Ind Mine roof supports
GB2196371A (en) * 1986-10-15 1988-04-27 Gullick Dobson Ltd Constant pressure mine roof support canopy extension

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1364221A (en) * 1973-01-18 1974-08-21 Podmoskovny Ni Pk Ugolny Inst Hydraulically controlled roof support
GB1583647A (en) * 1976-09-24 1981-01-28 Huwood Ltd Mine roof supports
GB2082236A (en) * 1980-08-06 1982-03-03 Dowty Mining Equipment Ltd Mine roof support with cantilever extension on roof plate
GB2115048A (en) * 1982-02-02 1983-09-01 Dobson Park Ind Mine roof supports
GB2196371A (en) * 1986-10-15 1988-04-27 Gullick Dobson Ltd Constant pressure mine roof support canopy extension

Also Published As

Publication number Publication date
GB8815085D0 (en) 1988-08-03
GB2220022A (en) 1989-12-28

Similar Documents

Publication Publication Date Title
GB2152570B (en) Mine roof support unit
GB8925547D0 (en) Mine roof support assembly
GB2231610B (en) Mine roof supports
GB2214963B (en) Mine roof supports
GB2239286B (en) Mine roof support
GB8615666D0 (en) Mine roof supports
GB2191236B (en) Mine roof supports
ZA912383B (en) Mine roof support
GB2236788B (en) Mine roof supports
GB2235234B (en) Mine roof supports
GB2196371B (en) Mine roof supports
GB2237318B (en) A mine roof support
GB2188665B (en) Mine roof supports
GB2201713B (en) Mine roof support
GB2220022B (en) Mine roof support
ZA898459B (en) Mine roof support
GB8800442D0 (en) Mine roof supports
GB8822262D0 (en) Mine roof support assemblies
ZA909073B (en) Mine roof support
ZA909381B (en) Mine roof support
PL270685A1 (en) Longwall roof support unit
GB8718767D0 (en) Mine roof support
GB2201986B (en) Mine roof supports
PL273731A3 (en) Self-advancing roof supports
GB8918085D0 (en) Mine roof supports

Legal Events

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

Effective date: 19930624