ZA892468B - Improvements in or relating to cutting elements foactuator and communication system r rotary drill bits - Google Patents

Improvements in or relating to cutting elements foactuator and communication system r rotary drill bits

Info

Publication number
ZA892468B
ZA892468B ZA892468A ZA892468A ZA892468B ZA 892468 B ZA892468 B ZA 892468B ZA 892468 A ZA892468 A ZA 892468A ZA 892468 A ZA892468 A ZA 892468A ZA 892468 B ZA892468 B ZA 892468B
Authority
ZA
South Africa
Prior art keywords
foactuator
relating
communication system
cutting elements
drill bits
Prior art date
Application number
ZA892468A
Other languages
English (en)
Inventor
Graham Alexander Munro Murdoch
John Denzil Barr
Denzil Barr John
Alexander Munro Murdoch Graham
Thomas Alexander Newton Jr
Alexander Newton Thomas Jr
Original Assignee
Uniscan Ltd
Reed Tool Co
Magellan Technology Pty Ltd Fo
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 Uniscan Ltd, Reed Tool Co, Magellan Technology Pty Ltd Fo filed Critical Uniscan Ltd
Publication of ZA892468B publication Critical patent/ZA892468B/xx

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
    • B61L23/002—Control or safety means for heart-points and crossings of aerial railways, funicular rack-railway
    • B61L23/005—Automatic control or safety means for points for operator-less railway, e.g. transportation systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/04—Indicating or recording train identities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/04—Indicating or recording train identities
    • B61L25/043—Indicating or recording train identities using inductive tags
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J2200/00—Indexing scheme relating to tuning resonant circuits and selecting resonant circuits
    • H03J2200/10—Tuning of a resonator by means of digitally controlled capacitor bank

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Health & Medical Sciences (AREA)
  • Transportation (AREA)
  • Near-Field Transmission Systems (AREA)
  • Networks Using Active Elements (AREA)
  • Lock And Its Accessories (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Earth Drilling (AREA)
  • Transmitters (AREA)
ZA892468A 1988-04-11 1989-04-04 Improvements in or relating to cutting elements foactuator and communication system r rotary drill bits ZA892468B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPI768388 1988-04-11

Publications (1)

Publication Number Publication Date
ZA892468B true ZA892468B (en) 1989-12-27

Family

ID=3773014

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA892468A ZA892468B (en) 1988-04-11 1989-04-04 Improvements in or relating to cutting elements foactuator and communication system r rotary drill bits

Country Status (8)

Country Link
EP (2) EP0609964A3 (xx)
JP (1) JPH03505148A (xx)
AT (1) ATE115792T1 (xx)
AU (1) AU624377B2 (xx)
CA (2) CA1338675C (xx)
DE (1) DE68920038T2 (xx)
WO (1) WO1989010030A1 (xx)
ZA (1) ZA892468B (xx)

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Also Published As

Publication number Publication date
CA1340489C (en) 1999-04-06
EP0409880A4 (en) 1991-07-10
ATE115792T1 (de) 1994-12-15
EP0409880B1 (en) 1994-12-14
AU624377B2 (en) 1992-06-11
DE68920038D1 (de) 1995-01-26
DE68920038T2 (de) 1995-08-03
AU3429889A (en) 1989-11-03
EP0409880A1 (en) 1991-01-30
WO1989010030A1 (en) 1989-10-19
EP0609964A2 (en) 1994-08-10
JPH03505148A (ja) 1991-11-07
EP0609964A3 (en) 1994-08-31
CA1338675C (en) 1996-10-22

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