GB8803275D0 - Mine roof support - Google Patents

Mine roof support

Info

Publication number
GB8803275D0
GB8803275D0 GB888803275A GB8803275A GB8803275D0 GB 8803275 D0 GB8803275 D0 GB 8803275D0 GB 888803275 A GB888803275 A GB 888803275A GB 8803275 A GB8803275 A GB 8803275A GB 8803275 D0 GB8803275 D0 GB 8803275D0
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.)
Granted
Application number
GB888803275A
Other versions
GB2201713A (en
GB2201713B (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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment 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 Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Publication of GB8803275D0 publication Critical patent/GB8803275D0/en
Publication of GB2201713A publication Critical patent/GB2201713A/en
Application granted granted Critical
Publication of GB2201713B publication Critical patent/GB2201713B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21D23/0454—Trailing plates; Coal face or goaf side sprags

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)
  • Earth Drilling (AREA)
  • Tents Or Canopies (AREA)
  • Revetment (AREA)
GB8803275A 1987-02-14 1988-02-12 Mine roof support Expired - Lifetime GB2201713B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878703496A GB8703496D0 (en) 1987-02-14 1987-02-14 Mine roof support

Publications (3)

Publication Number Publication Date
GB8803275D0 true GB8803275D0 (en) 1988-03-09
GB2201713A GB2201713A (en) 1988-09-07
GB2201713B GB2201713B (en) 1990-09-26

Family

ID=10612365

Family Applications (2)

Application Number Title Priority Date Filing Date
GB878703496A Pending GB8703496D0 (en) 1987-02-14 1987-02-14 Mine roof support
GB8803275A Expired - Lifetime GB2201713B (en) 1987-02-14 1988-02-12 Mine roof support

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB878703496A Pending GB8703496D0 (en) 1987-02-14 1987-02-14 Mine roof support

Country Status (2)

Country Link
DE (1) DE3804472C2 (en)
GB (2) GB8703496D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214216B (en) * 1988-01-09 1992-02-05 Gullick Dobson Ltd Mine roof supports and sprags therefor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1416211A (en) * 1973-02-12 1975-12-03 Taiheiyo Coal Mining Co Ltd Self-advancing roof support incorporating a wall protector
DE2420244A1 (en) * 1974-04-26 1975-11-06 Rheinstahl Ag Roof support over mining machine - has face support which swings back to rest against roof support carrier arm
SU840388A1 (en) * 1979-02-12 1981-06-23 Подмосковный Научно-Исследовательскийи Проектно-Конструкторский Угольныйинститут Top of power roof support unit
AT360935B (en) * 1979-05-03 1981-02-10 Voest Alpine Ag EXTENSION BLOCK
GB2052615B (en) * 1979-06-21 1983-03-16 Hemscheidt Maschf Hermann Hydraulic roof-support frame
DE3115984A1 (en) * 1981-04-22 1982-11-25 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen CAP ACTUATOR
SU1010286A1 (en) * 1981-08-21 1983-04-07 Шахта "Новомосковская" Производственного Объединения "Новомосковскуголь" Arrangement for supporting roof and working-face

Also Published As

Publication number Publication date
GB2201713A (en) 1988-09-07
GB2201713B (en) 1990-09-26
DE3804472A1 (en) 1988-08-25
GB8703496D0 (en) 1987-03-18
DE3804472C2 (en) 1996-09-19

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20080211