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FR928347A - Improvements to devices for detecting ferrous or magnetic bodies or irregularities which exist in ferrous or magnetic objects - Google Patents

Improvements to devices for detecting ferrous or magnetic bodies or irregularities which exist in ferrous or magnetic objects

Info

Publication number
FR928347A
FR928347A FR928347DA FR928347A FR 928347 A FR928347 A FR 928347A FR 928347D A FR928347D A FR 928347DA FR 928347 A FR928347 A FR 928347A
Authority
FR
France
Prior art keywords
ferrous
magnetic
irregularities
exist
devices
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
Other languages
French (fr)
Inventor
Charles-Roger Fevrot
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 filed Critical
Application granted granted Critical
Publication of FR928347A publication Critical patent/FR928347A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
    • G01V3/105—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
    • G01V3/107—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops using compensating coil or loop arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
FR928347D 1946-05-20 1946-05-20 Improvements to devices for detecting ferrous or magnetic bodies or irregularities which exist in ferrous or magnetic objects Expired FR928347A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR928347T 1946-05-20

Publications (1)

Publication Number Publication Date
FR928347A true FR928347A (en) 1947-11-25

Family

ID=9441703

Family Applications (1)

Application Number Title Priority Date Filing Date
FR928347D Expired FR928347A (en) 1946-05-20 1946-05-20 Improvements to devices for detecting ferrous or magnetic bodies or irregularities which exist in ferrous or magnetic objects

Country Status (1)

Country Link
FR (1) FR928347A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2379077A1 (en) * 1977-02-01 1978-08-25 Imp Metal Ind Kynoch Ltd METHOD AND APPARATUS FOR DETECTION OF FERROMAGNETIC MATERIAL IN A MASS OF NON-FERROMAGNETIC MATERIAL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2379077A1 (en) * 1977-02-01 1978-08-25 Imp Metal Ind Kynoch Ltd METHOD AND APPARATUS FOR DETECTION OF FERROMAGNETIC MATERIAL IN A MASS OF NON-FERROMAGNETIC MATERIAL

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