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GB2123117B - Valve assemblies - Google Patents

Valve assemblies

Info

Publication number
GB2123117B
GB2123117B GB08219534A GB8219534A GB2123117B GB 2123117 B GB2123117 B GB 2123117B GB 08219534 A GB08219534 A GB 08219534A GB 8219534 A GB8219534 A GB 8219534A GB 2123117 B GB2123117 B GB 2123117B
Authority
GB
United Kingdom
Prior art keywords
valve assemblies
assemblies
valve
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
GB08219534A
Other versions
GB2123117A (en
Inventor
Anthony George Hall
John Marsh
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 GB08219534A priority Critical patent/GB2123117B/en
Priority to FR8310446A priority patent/FR2529946B1/en
Priority to DE19833324237 priority patent/DE3324237A1/en
Publication of GB2123117A publication Critical patent/GB2123117A/en
Application granted granted Critical
Publication of GB2123117B publication Critical patent/GB2123117B/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
    • 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

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)
  • Mechanically-Actuated Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
GB08219534A 1982-07-06 1982-07-06 Valve assemblies Expired GB2123117B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB08219534A GB2123117B (en) 1982-07-06 1982-07-06 Valve assemblies
FR8310446A FR2529946B1 (en) 1982-07-06 1983-06-24 VALVE ASSEMBLIES
DE19833324237 DE3324237A1 (en) 1982-07-06 1983-07-06 VALVE ARRANGEMENT, ESPECIALLY FOR HYDRAULIC PIT REMOVAL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08219534A GB2123117B (en) 1982-07-06 1982-07-06 Valve assemblies

Publications (2)

Publication Number Publication Date
GB2123117A GB2123117A (en) 1984-01-25
GB2123117B true GB2123117B (en) 1986-01-29

Family

ID=10531501

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08219534A Expired GB2123117B (en) 1982-07-06 1982-07-06 Valve assemblies

Country Status (3)

Country Link
DE (1) DE3324237A1 (en)
FR (1) FR2529946B1 (en)
GB (1) GB2123117B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103032090A (en) * 2012-12-12 2013-04-10 乐清市东风煤矿设备有限公司 Hydraulic control directional control valve
AU2015389133B2 (en) * 2015-04-01 2020-09-03 Sandvik Intellectual Property Ab Control unit for mining machine

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB851023A (en) * 1957-09-04 1960-10-12 Lansing Bagnall Ltd Improvements in or relating to valve systems for pressure fluid circuits
DE1400568A1 (en) * 1960-03-24 1969-02-06 Aurora Corp Valve device
GB1169361A (en) * 1965-09-14 1969-11-05 Dobson Ltd W E & F Improvements in Fluid Valve Means for Mine Roof Supports
DE7013582U (en) * 1970-04-14 1970-09-10 Hemscheidt Maschf Hermann STEPPING REMOVAL UNIT WITH CONTROL DEVICE.
DE2517327A1 (en) * 1975-04-18 1976-10-28 Wabco Westinghouse Gmbh MANUAL CONTROL VALVE FOR A HYDRAULIC CONTROL DEVICE
GB1529994A (en) * 1975-11-25 1978-10-25 Hemscheidt Maschf Hermann Hydraulic controller for example for use with hydraulic mine-roof supports
DE2622285C3 (en) * 1976-05-19 1978-11-09 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Push-button control device for hydraulic support
DE2640185C3 (en) * 1976-09-07 1986-07-10 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Multiple control unit for hydraulic support
DE2700829C2 (en) * 1977-01-11 1986-04-17 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Hydraulic extension control
GB1598322A (en) * 1977-06-30 1981-09-16 Hotpoint Ltd Drive mechanisms
DE2745631B1 (en) * 1977-10-11 1979-02-08 Hemscheidt Maschf Hermann Multiple control unit for hydraulic step extension
DE2838374B1 (en) * 1978-09-02 1980-01-10 Hemscheidt Maschf Hermann Neighbor control for hydraulic step extension frames
DE3012291A1 (en) * 1980-03-29 1981-10-15 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen CONTROL VALVE DEVICE, IN PARTICULAR FOR UNDERGROUND REMOVAL CONTROL
US4342335A (en) * 1980-10-23 1982-08-03 Koehring Company Hydraulic valve detent mechanism

Also Published As

Publication number Publication date
FR2529946A1 (en) 1984-01-13
DE3324237A1 (en) 1984-02-02
FR2529946B1 (en) 1988-05-20
GB2123117A (en) 1984-01-25

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Legal Events

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