GB2167109B - Control system for multi-leg mine roof supports, and valve arrangement for such system - Google Patents

Control system for multi-leg mine roof supports, and valve arrangement for such system

Info

Publication number
GB2167109B
GB2167109B GB08527965A GB8527965A GB2167109B GB 2167109 B GB2167109 B GB 2167109B GB 08527965 A GB08527965 A GB 08527965A GB 8527965 A GB8527965 A GB 8527965A GB 2167109 B GB2167109 B GB 2167109B
Authority
GB
United Kingdom
Prior art keywords
valve arrangement
mine roof
control system
roof supports
leg
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
GB08527965A
Other versions
GB2167109A (en
GB8527965D0 (en
Inventor
Russell Stuart Turner
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.)
Fletcher Sutcliffe Wild Ltd
Original Assignee
Fletcher Sutcliffe Wild 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 Fletcher Sutcliffe Wild Ltd filed Critical Fletcher Sutcliffe Wild Ltd
Publication of GB8527965D0 publication Critical patent/GB8527965D0/en
Publication of GB2167109A publication Critical patent/GB2167109A/en
Application granted granted Critical
Publication of GB2167109B publication Critical patent/GB2167109B/en
Expired 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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E21D23/26—Hydraulic or pneumatic control

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)
  • Safety Valves (AREA)
GB08527965A 1984-11-14 1985-11-13 Control system for multi-leg mine roof supports, and valve arrangement for such system Expired GB2167109B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB848428788A GB8428788D0 (en) 1984-11-14 1984-11-14 Control system

Publications (3)

Publication Number Publication Date
GB8527965D0 GB8527965D0 (en) 1985-12-18
GB2167109A GB2167109A (en) 1986-05-21
GB2167109B true GB2167109B (en) 1987-07-29

Family

ID=10569723

Family Applications (2)

Application Number Title Priority Date Filing Date
GB848428788A Pending GB8428788D0 (en) 1984-11-14 1984-11-14 Control system
GB08527965A Expired GB2167109B (en) 1984-11-14 1985-11-13 Control system for multi-leg mine roof supports, and valve arrangement for such system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB848428788A Pending GB8428788D0 (en) 1984-11-14 1984-11-14 Control system

Country Status (1)

Country Link
GB (2) GB8428788D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3546278C1 (en) * 1985-12-28 1987-07-02 Bergwerksverband Gmbh Repositioning control for longwall construction

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2042035B (en) * 1979-02-06 1983-05-05 Fletcher Sutcliffe Wild Ltd Prop control system
US4226558A (en) * 1979-02-16 1980-10-07 Fletcher Sutcliffe Wild Limited Control system

Also Published As

Publication number Publication date
GB8428788D0 (en) 1984-12-27
GB2167109A (en) 1986-05-21
GB8527965D0 (en) 1985-12-18

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Legal Events

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

Effective date: 19931113