GB2044332B - Mine-roof supports - Google Patents

Mine-roof supports

Info

Publication number
GB2044332B
GB2044332B GB7908419A GB7908419A GB2044332B GB 2044332 B GB2044332 B GB 2044332B GB 7908419 A GB7908419 A GB 7908419A GB 7908419 A GB7908419 A GB 7908419A GB 2044332 B GB2044332 B GB 2044332B
Authority
GB
United Kingdom
Prior art keywords
mine
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
Application number
GB7908419A
Other versions
GB2044332A (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.)
Joy Global Industries Ltd
Original Assignee
Dobson Park Industries 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 Dobson Park Industries Ltd filed Critical Dobson Park Industries Ltd
Priority to GB7908419A priority Critical patent/GB2044332B/en
Publication of GB2044332A publication Critical patent/GB2044332A/en
Application granted granted Critical
Publication of GB2044332B publication Critical patent/GB2044332B/en
Expired 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
GB7908419A 1979-03-09 1979-03-09 Mine-roof supports Expired GB2044332B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7908419A GB2044332B (en) 1979-03-09 1979-03-09 Mine-roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7908419A GB2044332B (en) 1979-03-09 1979-03-09 Mine-roof supports

Publications (2)

Publication Number Publication Date
GB2044332A GB2044332A (en) 1980-10-15
GB2044332B true GB2044332B (en) 1982-12-01

Family

ID=10503766

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7908419A Expired GB2044332B (en) 1979-03-09 1979-03-09 Mine-roof supports

Country Status (1)

Country Link
GB (1) GB2044332B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8401972U1 (en) * 1983-02-04 1984-04-26 I.P.E. Nuova Bialetti S.p.A. Industria Prodotti Elettrodomestici, Crusinallo di Omegna, Novara Household appliance for the pre-treatment of food
CN111706378B (en) * 2020-06-28 2022-09-27 中煤科工开采研究院有限公司 Hydraulic support for end of thin coal seam

Also Published As

Publication number Publication date
GB2044332A (en) 1980-10-15

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Legal Events

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