FR1168757A - Electronic device for the detection of metallic objects - Google Patents

Electronic device for the detection of metallic objects

Info

Publication number
FR1168757A
FR1168757A FR1168757DA FR1168757A FR 1168757 A FR1168757 A FR 1168757A FR 1168757D A FR1168757D A FR 1168757DA FR 1168757 A FR1168757 A FR 1168757A
Authority
FR
France
Prior art keywords
detection
electronic device
metallic objects
metallic
objects
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)
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.)
Compagnie des Freins et Signaux Westinghouse SA
Original Assignee
Compagnie des Freins et Signaux Westinghouse SA
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 Compagnie des Freins et Signaux Westinghouse SA filed Critical Compagnie des Freins et Signaux Westinghouse SA
Application granted granted Critical
Publication of FR1168757A publication Critical patent/FR1168757A/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
    • G01V3/101—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 by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil
    • G01V3/102—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 by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil by measuring amplitude

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)
FR1168757D 1957-03-02 1957-03-02 Electronic device for the detection of metallic objects Expired FR1168757A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1168757T 1957-03-02

Publications (1)

Publication Number Publication Date
FR1168757A true FR1168757A (en) 1958-12-16

Family

ID=9656190

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1168757D Expired FR1168757A (en) 1957-03-02 1957-03-02 Electronic device for the detection of metallic objects

Country Status (1)

Country Link
FR (1) FR1168757A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3226634A (en) * 1961-03-23 1965-12-28 Frank M Shoemaker Transistorized metal detector with temperature compensation means
US3503007A (en) * 1967-09-20 1970-03-24 Buchungsmachinenwerk Karl Marx Controllable oscillator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3226634A (en) * 1961-03-23 1965-12-28 Frank M Shoemaker Transistorized metal detector with temperature compensation means
US3503007A (en) * 1967-09-20 1970-03-24 Buchungsmachinenwerk Karl Marx Controllable oscillator

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