GB9719967D0 - Improvements in and relating to a hydraulic control system - Google Patents

Improvements in and relating to a hydraulic control system

Info

Publication number
GB9719967D0
GB9719967D0 GBGB9719967.3A GB9719967A GB9719967D0 GB 9719967 D0 GB9719967 D0 GB 9719967D0 GB 9719967 A GB9719967 A GB 9719967A GB 9719967 D0 GB9719967 D0 GB 9719967D0
Authority
GB
United Kingdom
Prior art keywords
relating
control system
hydraulic control
hydraulic
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Withdrawn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
GBGB9719967.3A
Other versions
GB2329428A (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 MINING MACHINERY Ltd
Original Assignee
JOY MINING MACHINERY 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 JOY MINING MACHINERY Ltd filed Critical JOY MINING MACHINERY Ltd
Priority to GB9719967A priority Critical patent/GB2329428A/en
Publication of GB9719967D0 publication Critical patent/GB9719967D0/en
Priority to DE1998142717 priority patent/DE19842717A1/en
Priority to AU86087/98A priority patent/AU8608798A/en
Publication of GB2329428A publication Critical patent/GB2329428A/en
Withdrawn legal-status Critical Current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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • 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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E21D23/26—Hydraulic or pneumatic control
GB9719967A 1997-09-20 1997-09-20 Improvements in and relating to a hydraulic control system Withdrawn GB2329428A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB9719967A GB2329428A (en) 1997-09-20 1997-09-20 Improvements in and relating to a hydraulic control system
DE1998142717 DE19842717A1 (en) 1997-09-20 1998-09-17 Hydraulic control system
AU86087/98A AU8608798A (en) 1997-09-20 1998-09-18 Improvements in and relating to a hydraulic control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9719967A GB2329428A (en) 1997-09-20 1997-09-20 Improvements in and relating to a hydraulic control system

Publications (2)

Publication Number Publication Date
GB9719967D0 true GB9719967D0 (en) 1997-11-19
GB2329428A GB2329428A (en) 1999-03-24

Family

ID=10819344

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9719967A Withdrawn GB2329428A (en) 1997-09-20 1997-09-20 Improvements in and relating to a hydraulic control system

Country Status (3)

Country Link
AU (1) AU8608798A (en)
DE (1) DE19842717A1 (en)
GB (1) GB2329428A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103147779A (en) * 2013-03-15 2013-06-12 中国矿业大学 Overall top beam statically indeterminate hydraulic bracket

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB930201A (en) * 1900-01-01
GB781644A (en) * 1954-05-07 1957-08-21 Klockner Bergbau Victor Ickern Combined hydraulic cylinder and reversing cock therefor
GB935843A (en) * 1960-05-20 1963-09-04 Bwg Bergwerk Walzwerk A travelling support frame for the support of galleries in mines
DE1152376B (en) * 1960-08-05 1963-08-08 Bwg Bergwerk Walzwerk Hydraulic pit ram with enlarged stroke
GB1086532A (en) * 1964-01-18 1967-10-11 Dobson Ltd W E & F Improvements in and relating to hydraulic mine roof supports
GB1464557A (en) * 1974-04-16 1977-02-16 Dowty Mining Equipment Ltd Fluid pressure apparatus
AT339237B (en) * 1975-09-09 1977-10-10 Voest Ag HYDRAULIC PIT STAMP
GB9625635D0 (en) * 1996-12-10 1997-01-29 Joy Mining Machinery Valves

Also Published As

Publication number Publication date
DE19842717A1 (en) 1999-03-25
GB2329428A (en) 1999-03-24
AU8608798A (en) 1999-04-01

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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)