GB2097933B - Means for detecting a metallic object - Google Patents

Means for detecting a metallic object

Info

Publication number
GB2097933B
GB2097933B GB8211642A GB8211642A GB2097933B GB 2097933 B GB2097933 B GB 2097933B GB 8211642 A GB8211642 A GB 8211642A GB 8211642 A GB8211642 A GB 8211642A GB 2097933 B GB2097933 B GB 2097933B
Authority
GB
United Kingdom
Prior art keywords
detecting
metallic object
metallic
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
GB8211642A
Other versions
GB2097933A (en
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.)
Saab Bofors AB
Original Assignee
Bofors AB
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 Bofors AB filed Critical Bofors AB
Publication of GB2097933A publication Critical patent/GB2097933A/en
Application granted granted Critical
Publication of GB2097933B publication Critical patent/GB2097933B/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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electromagnetism (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
GB8211642A 1981-05-06 1982-04-22 Means for detecting a metallic object Expired GB2097933B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8102827A SE426269B (en) 1981-05-06 1981-05-06 DEVICE FOR THE DETECTION OF METAL FORMS

Publications (2)

Publication Number Publication Date
GB2097933A GB2097933A (en) 1982-11-10
GB2097933B true GB2097933B (en) 1985-05-15

Family

ID=20343740

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8211642A Expired GB2097933B (en) 1981-05-06 1982-04-22 Means for detecting a metallic object

Country Status (11)

Country Link
JP (1) JPS57192887A (en)
BE (1) BE893088A (en)
CA (1) CA1198165A (en)
CH (1) CH656231A5 (en)
DE (1) DE3217033A1 (en)
FR (1) FR2505508B1 (en)
GB (1) GB2097933B (en)
IT (1) IT1147941B (en)
NL (1) NL8201811A (en)
NO (1) NO821485L (en)
SE (1) SE426269B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59141001A (en) * 1983-02-01 1984-08-13 Mitsubishi Electric Corp Detecting method for effective end position of metallic pipe
SE470289B (en) * 1992-11-04 1994-01-10 Bofors Ab Magnetic zone tube
US5426363A (en) * 1993-04-26 1995-06-20 Kabushiki Kaisha Honda Denshi Giken Object detecting device
WO2009155668A1 (en) * 2008-06-27 2009-12-30 Minelab Electronics Pty Limited Constant current metal detector with driven transmit coil

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB835128A (en) * 1955-09-17 1960-05-18 Asea Ab Apparatus for examining a substance utilising the effect of the substance on the q factor of a resonant circuit
DE2052989C3 (en) * 1970-10-30 1973-11-08 Guenther Dipl.-Ing. 2209 Sushoern Weber Switching device triggered by one or more moving objects
GB1448877A (en) * 1973-09-04 1976-09-08 Weber G Electronic switching device for sensing a body and for converting such sensing into an electrical signal
GB1561641A (en) * 1976-08-05 1980-02-27 Redland Automation Ltd Presence detector apparatus
LU75628A1 (en) * 1976-08-19 1978-04-13
DE2722511A1 (en) * 1977-05-18 1978-11-30 Voll Walter METAL DETECTOR
DE2722498C3 (en) * 1977-05-18 1982-02-04 Walter Ing.(Grad.) 8728 Hassfurt Voll Device on a motor vehicle for displaying a minimum distance

Also Published As

Publication number Publication date
BE893088A (en) 1982-08-30
FR2505508B1 (en) 1985-11-29
IT1147941B (en) 1986-11-26
DE3217033C2 (en) 1991-01-03
JPS57192887A (en) 1982-11-27
NL8201811A (en) 1982-12-01
CH656231A5 (en) 1986-06-13
NO821485L (en) 1982-11-08
GB2097933A (en) 1982-11-10
SE8102827L (en) 1982-11-07
SE426269B (en) 1982-12-20
DE3217033A1 (en) 1982-11-25
IT8248333A0 (en) 1982-05-05
FR2505508A1 (en) 1982-11-12
CA1198165A (en) 1985-12-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930422