GB2197679B - Mine roof support assemblies - Google Patents

Mine roof support assemblies

Info

Publication number
GB2197679B
GB2197679B GB8727060A GB8727060A GB2197679B GB 2197679 B GB2197679 B GB 2197679B GB 8727060 A GB8727060 A GB 8727060A GB 8727060 A GB8727060 A GB 8727060A GB 2197679 B GB2197679 B GB 2197679B
Authority
GB
United Kingdom
Prior art keywords
roof support
support assemblies
mine roof
mine
assemblies
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
GB8727060A
Other versions
GB2197679A (en
GB8727060D0 (en
Inventor
Geraint Jones
Stephen Arthur Brown
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 GB8727060D0 publication Critical patent/GB8727060D0/en
Publication of GB2197679A publication Critical patent/GB2197679A/en
Application granted granted Critical
Publication of GB2197679B publication Critical patent/GB2197679B/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
GB8727060A 1986-11-19 1987-11-19 Mine roof support assemblies Expired - Fee Related GB2197679B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868627652A GB8627652D0 (en) 1986-11-19 1986-11-19 Mine roof support assemblies

Publications (3)

Publication Number Publication Date
GB8727060D0 GB8727060D0 (en) 1987-12-23
GB2197679A GB2197679A (en) 1988-05-25
GB2197679B true GB2197679B (en) 1990-02-14

Family

ID=10607584

Family Applications (2)

Application Number Title Priority Date Filing Date
GB868627652A Pending GB8627652D0 (en) 1986-11-19 1986-11-19 Mine roof support assemblies
GB8727060A Expired - Fee Related GB2197679B (en) 1986-11-19 1987-11-19 Mine roof support assemblies

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB868627652A Pending GB8627652D0 (en) 1986-11-19 1986-11-19 Mine roof support assemblies

Country Status (2)

Country Link
DE (1) DE3739221A1 (en)
GB (2) GB8627652D0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8715774D0 (en) * 1987-07-04 1987-08-12 Dowty Mining Equipment Ltd Roof supports
CN102943679B (en) * 2012-11-01 2015-06-03 中煤北京煤矿机械有限责任公司 Hydraulic bracket and outer bottom adjusting mechanism of hydraulic bracket
WO2015038089A1 (en) * 2013-09-13 2015-03-19 Общество С Ограниченной Ответственностью "Корум Групп" Mechanized support section
CN103821548B (en) * 2014-01-22 2016-01-20 三一重型装备有限公司 A kind of bottom raising mechanism and hydraulic support

Also Published As

Publication number Publication date
GB8627652D0 (en) 1986-12-17
GB2197679A (en) 1988-05-25
GB8727060D0 (en) 1987-12-23
DE3739221A1 (en) 1988-06-01

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Legal Events

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

Effective date: 19941119