GB2208404B - Roof supports - Google Patents

Roof supports

Info

Publication number
GB2208404B
GB2208404B GB8815630A GB8815630A GB2208404B GB 2208404 B GB2208404 B GB 2208404B GB 8815630 A GB8815630 A GB 8815630A GB 8815630 A GB8815630 A GB 8815630A GB 2208404 B GB2208404 B GB 2208404B
Authority
GB
United Kingdom
Prior art keywords
roof supports
roof
supports
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
GB8815630A
Other versions
GB2208404A (en
GB8815630D0 (en
Inventor
John Hirst Walker
Edmund Douglas Bradley
David Chandler
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
Meco Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment Ltd
Meco 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, Meco Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Publication of GB8815630D0 publication Critical patent/GB8815630D0/en
Publication of GB2208404A publication Critical patent/GB2208404A/en
Application granted granted Critical
Publication of GB2208404B publication Critical patent/GB2208404B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D23/0436—Means for inclining the base member of the support
GB8815630A 1987-07-04 1988-06-30 Roof supports Expired - Fee Related GB2208404B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878715774A GB8715774D0 (en) 1987-07-04 1987-07-04 Roof supports

Publications (3)

Publication Number Publication Date
GB8815630D0 GB8815630D0 (en) 1988-08-03
GB2208404A GB2208404A (en) 1989-03-30
GB2208404B true GB2208404B (en) 1991-10-16

Family

ID=10620097

Family Applications (2)

Application Number Title Priority Date Filing Date
GB878715774A Pending GB8715774D0 (en) 1987-07-04 1987-07-04 Roof supports
GB8815630A Expired - Fee Related GB2208404B (en) 1987-07-04 1988-06-30 Roof supports

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB878715774A Pending GB8715774D0 (en) 1987-07-04 1987-07-04 Roof supports

Country Status (2)

Country Link
DE (1) DE3822618A1 (en)
GB (2) GB8715774D0 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1049431A (en) * 1965-01-06 1966-11-30 Gullick Ltd Improvements in or relating to mine roof supports
GB1093395A (en) * 1964-05-11 1967-11-29 Gewerk Eisenhuette Westfalia Advancing hydraulic support assembly
GB1105723A (en) * 1965-11-17 1968-03-13 Gullick Ltd Improvements in or relating to mine roof supports
GB1124191A (en) * 1965-01-15 1968-08-21 Gullick Ltd Improvements in or relating to mine roof supports
GB1205154A (en) * 1968-08-20 1970-09-16 Gullick Ltd Improvements in or relating to mine roof supports
GB2180285A (en) * 1985-08-22 1987-03-25 Oroszlanyi Szenbanyak Self advancing lifting toe support for underground longwall working
GB2197679A (en) * 1986-11-19 1988-05-25 Dowty Mining Equipment Ltd Mine roof supports with lifting toe on base

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1093395A (en) * 1964-05-11 1967-11-29 Gewerk Eisenhuette Westfalia Advancing hydraulic support assembly
GB1049431A (en) * 1965-01-06 1966-11-30 Gullick Ltd Improvements in or relating to mine roof supports
GB1124191A (en) * 1965-01-15 1968-08-21 Gullick Ltd Improvements in or relating to mine roof supports
GB1105723A (en) * 1965-11-17 1968-03-13 Gullick Ltd Improvements in or relating to mine roof supports
GB1205154A (en) * 1968-08-20 1970-09-16 Gullick Ltd Improvements in or relating to mine roof supports
GB2180285A (en) * 1985-08-22 1987-03-25 Oroszlanyi Szenbanyak Self advancing lifting toe support for underground longwall working
GB2197679A (en) * 1986-11-19 1988-05-25 Dowty Mining Equipment Ltd Mine roof supports with lifting toe on base

Also Published As

Publication number Publication date
GB8715774D0 (en) 1987-08-12
DE3822618A1 (en) 1989-01-12
GB2208404A (en) 1989-03-30
GB8815630D0 (en) 1988-08-03

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Legal Events

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

Effective date: 19930630