[go: up one dir, main page]

AU497008B2 - Hydrautic apparatus - Google Patents

Hydrautic apparatus

Info

Publication number
AU497008B2
AU497008B2 AU55527/73A AU5552773A AU497008B2 AU 497008 B2 AU497008 B2 AU 497008B2 AU 55527/73 A AU55527/73 A AU 55527/73A AU 5552773 A AU5552773 A AU 5552773A AU 497008 B2 AU497008 B2 AU 497008B2
Authority
AU
Australia
Prior art keywords
hydrautic
hydrautic apparatus
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
AU55527/73A
Other versions
AU5552773A (en
Inventor
Ra Gibbins
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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment 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 Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to AU55527/73A priority Critical patent/AU497008B2/en
Publication of AU5552773A publication Critical patent/AU5552773A/en
Application granted granted Critical
Publication of AU497008B2 publication Critical patent/AU497008B2/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
    • E21D23/18—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms
    • E21D23/20—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms for sequential movement, e.g. one behind the other
    • 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)
AU55527/73A 1973-05-10 1973-05-10 Hydrautic apparatus Expired AU497008B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU55527/73A AU497008B2 (en) 1973-05-10 1973-05-10 Hydrautic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU55527/73A AU497008B2 (en) 1973-05-10 1973-05-10 Hydrautic apparatus

Publications (2)

Publication Number Publication Date
AU5552773A AU5552773A (en) 1974-11-14
AU497008B2 true AU497008B2 (en) 1978-11-23

Family

ID=3741254

Family Applications (1)

Application Number Title Priority Date Filing Date
AU55527/73A Expired AU497008B2 (en) 1973-05-10 1973-05-10 Hydrautic apparatus

Country Status (1)

Country Link
AU (1) AU497008B2 (en)

Also Published As

Publication number Publication date
AU5552773A (en) 1974-11-14

Similar Documents

Publication Publication Date Title
HK17483A (en) Thin sheet-sorting apparatus
AU469266B2 (en) Drier-mixing apparatus
CA1013101A (en) Shampooing apparatus
CA976116A (en) Vehicle-towing apparatus
CA1001672A (en) Transfer apparatus
CA1012040A (en) Chipping apparatus
CA1030753A (en) Development apparatus
CA1007384A (en) Radiographic apparatus
CA992474A (en) Plugging apparatus
AU473389B2 (en) Drawing apparatus
CA1004132A (en) Wrapping apparatus
CA1030400A (en) Transfer apparatus
CA983965A (en) Ball-firing device
CA1011118A (en) Dust-repelling apparatus
CA1007837A (en) Assembly apparatus
CA1026512A (en) Post-forming apparatus
CA981081A (en) Embossing apparatus
CA1033308A (en) Floating-matter removing apparatus
CA982969A (en) Tabulating apparatus
AU482321B2 (en) Web-stretching apparatus
CA1001728A (en) Shielding apparatus
SU601152A1 (en) Nut-tightening device
CA1035560A (en) Strand-crimping apparatus
AU475385B2 (en) Cleansing apparatus
AU497008B2 (en) Hydrautic apparatus