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GB1391331A - Mine roof supports - Google Patents

Mine roof supports

Info

Publication number
GB1391331A
GB1391331A GB800172A GB800172A GB1391331A GB 1391331 A GB1391331 A GB 1391331A GB 800172 A GB800172 A GB 800172A GB 800172 A GB800172 A GB 800172A GB 1391331 A GB1391331 A GB 1391331A
Authority
GB
United Kingdom
Prior art keywords
mine roof
roof support
feb
hydraulic
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
GB800172A
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.)
University of Surrey
Original Assignee
University of Surrey
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 University of Surrey filed Critical University of Surrey
Priority to GB800172A priority Critical patent/GB1391331A/en
Publication of GB1391331A publication Critical patent/GB1391331A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Tents Or Canopies (AREA)

Abstract

1391331 Mine roof support COAL INDUSTRY (PATENTS) Ltd 20 Feb 1973 [22 Feb 1972] 8001/72 Heading E1P A hydraulic mine roof support such as a hydraulic roof support frame adapted to be advanced by a ram has its upper beam 2 provided with at least one resilient component 9 having an open recess. The component 9 may be made of rubber or synthetic rubber and secured to the beam 2 by a bolted plate 10 engaging side flanges thereof or disposed within the hollow section, see Fig. 4 (not shown). The components 9 may be disposed transverse to the beam or arranged in herring-bone fashion thereon for details of which the Specification and remaining drawings, (not shown), should be referred to.
GB800172A 1972-02-22 1972-02-22 Mine roof supports Expired GB1391331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB800172A GB1391331A (en) 1972-02-22 1972-02-22 Mine roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB800172A GB1391331A (en) 1972-02-22 1972-02-22 Mine roof supports

Publications (1)

Publication Number Publication Date
GB1391331A true GB1391331A (en) 1975-04-23

Family

ID=9843885

Family Applications (1)

Application Number Title Priority Date Filing Date
GB800172A Expired GB1391331A (en) 1972-02-22 1972-02-22 Mine roof supports

Country Status (1)

Country Link
GB (1) GB1391331A (en)

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Legal Events

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