ZA7158B - Method of coding track circuits and permitting the transmission of information to a vehicle moving along a railway track,and receivers for putting this method into practice - Google Patents

Method of coding track circuits and permitting the transmission of information to a vehicle moving along a railway track,and receivers for putting this method into practice

Info

Publication number
ZA7158B
ZA7158B ZA710058A ZA7158A ZA7158B ZA 7158 B ZA7158 B ZA 7158B ZA 710058 A ZA710058 A ZA 710058A ZA 7158 A ZA7158 A ZA 7158A ZA 7158 B ZA7158 B ZA 7158B
Authority
ZA
South Africa
Prior art keywords
receivers
permitting
putting
practice
transmission
Prior art date
Application number
ZA710058A
Inventor
G Alt
Original Assignee
Co De Signaux Et D Entreprises
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 Co De Signaux Et D Entreprises filed Critical Co De Signaux Et D Entreprises
Publication of ZA7158B publication Critical patent/ZA7158B/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/008—Drilling ice or a formation covered by ice
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/14—Drilling by use of heat, e.g. flame drilling

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Tents Or Canopies (AREA)
  • Drying Of Solid Materials (AREA)
ZA710058A 1971-01-07 1971-01-05 Method of coding track circuits and permitting the transmission of information to a vehicle moving along a railway track,and receivers for putting this method into practice ZA7158B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7100325A FR2166393A5 (en) 1971-01-07 1971-01-07

Publications (1)

Publication Number Publication Date
ZA7158B true ZA7158B (en) 1971-11-24

Family

ID=9069913

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA710058A ZA7158B (en) 1971-01-07 1971-01-05 Method of coding track circuits and permitting the transmission of information to a vehicle moving along a railway track,and receivers for putting this method into practice

Country Status (5)

Country Link
CA (1) CA977737A (en)
FR (1) FR2166393A5 (en)
GB (1) GB1315921A (en)
NO (1) NO129017B (en)
ZA (1) ZA7158B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4923019A (en) * 1989-02-28 1990-05-08 Arctic Systems Limited Thermochemical penetrator for ice and frozen soils
GB9013661D0 (en) * 1990-06-19 2001-10-31 Marconi Gec Ltd Improvements relating to ice penetrating devices
DE10332571B3 (en) * 2003-07-13 2004-11-25 Stiftung Alfred-Wegener-Institut Für Polar- Und Meeresforschung Thermic drilling method for forming borehole in ice with initial formation of pilot bore and subsequent formation of main borehole via melting/rinsing drill head supplied with pressurized hot water
FR2964141B1 (en) * 2010-09-01 2013-09-27 Boma Construction DEVICE AND METHOD FOR DRILLING A HOLE IN A THICK LAYER OF ICE
CN102839918B (en) * 2012-09-13 2014-07-16 吉林大学 Ice directional drilling hot-melt drill
DE102018003378A1 (en) * 2018-04-25 2019-10-31 Rheinisch-Westfälische Technische Hochschule (Rwth) Aachen Melting head of an ice-melting device

Also Published As

Publication number Publication date
FR2166393A5 (en) 1973-08-17
GB1315921A (en) 1973-05-09
CA977737A (en) 1975-11-11
NO129017B (en) 1974-02-11

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