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GB8531101D0 - Control valve & system - Google Patents

Control valve & system

Info

Publication number
GB8531101D0
GB8531101D0 GB858531101A GB8531101A GB8531101D0 GB 8531101 D0 GB8531101 D0 GB 8531101D0 GB 858531101 A GB858531101 A GB 858531101A GB 8531101 A GB8531101 A GB 8531101A GB 8531101 D0 GB8531101 D0 GB 8531101D0
Authority
GB
United Kingdom
Prior art keywords
control valve
valve
control
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.)
Withdrawn
Application number
GB858531101A
Other versions
GB2169022A (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.)
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 GB8531101D0 publication Critical patent/GB8531101D0/en
Publication of GB2169022A publication Critical patent/GB2169022A/en
Withdrawn legal-status Critical Current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)
  • Check Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
GB08531101A 1984-12-22 1985-12-18 Control valve and control system for multi-leg mine roof supports Withdrawn GB2169022A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB848432568A GB8432568D0 (en) 1984-12-22 1984-12-22 Control valve

Publications (2)

Publication Number Publication Date
GB8531101D0 true GB8531101D0 (en) 1986-01-29
GB2169022A GB2169022A (en) 1986-07-02

Family

ID=10571689

Family Applications (2)

Application Number Title Priority Date Filing Date
GB848432568A Pending GB8432568D0 (en) 1984-12-22 1984-12-22 Control valve
GB08531101A Withdrawn GB2169022A (en) 1984-12-22 1985-12-18 Control valve and control system for multi-leg mine roof supports

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB848432568A Pending GB8432568D0 (en) 1984-12-22 1984-12-22 Control valve

Country Status (1)

Country Link
GB (2) GB8432568D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107762542A (en) * 2017-10-26 2018-03-06 鸿大智能机械有限公司 The regulator of automatic unloading hydraulic control one-way valve

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
GB8432568D0 (en) 1985-02-06
GB2169022A (en) 1986-07-02

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)