GB8729174D0 - Search coil assembly for metal detectors & method for making same - Google Patents

Search coil assembly for metal detectors & method for making same

Info

Publication number
GB8729174D0
GB8729174D0 GB878729174A GB8729174A GB8729174D0 GB 8729174 D0 GB8729174 D0 GB 8729174D0 GB 878729174 A GB878729174 A GB 878729174A GB 8729174 A GB8729174 A GB 8729174A GB 8729174 D0 GB8729174 D0 GB 8729174D0
Authority
GB
United Kingdom
Prior art keywords
coil assembly
making same
search coil
metal detectors
detectors
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.)
Granted
Application number
GB878729174A
Other versions
GB2205409B (en
GB2205409A (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.)
Barkley and Dexter Laboratories Inc
Original Assignee
Barkley and Dexter Laboratories Inc
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
Priority claimed from US07/056,241 external-priority patent/US4833773A/en
Priority claimed from US07/086,650 external-priority patent/US4819321A/en
Application filed by Barkley and Dexter Laboratories Inc filed Critical Barkley and Dexter Laboratories Inc
Publication of GB8729174D0 publication Critical patent/GB8729174D0/en
Publication of GB2205409A publication Critical patent/GB2205409A/en
Application granted granted Critical
Publication of GB2205409B publication Critical patent/GB2205409B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures
GB8729174A 1987-06-01 1987-12-15 Search coil assembly for metal detectors and method for making same Expired - Fee Related GB2205409B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/056,241 US4833773A (en) 1987-06-01 1987-06-01 Method for making search coil assembly for metal detectors
US07/086,650 US4819321A (en) 1987-08-18 1987-08-18 Method for making the search coil assembly for metal detectors

Publications (3)

Publication Number Publication Date
GB8729174D0 true GB8729174D0 (en) 1988-01-27
GB2205409A GB2205409A (en) 1988-12-07
GB2205409B GB2205409B (en) 1991-02-13

Family

ID=26735139

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8729173A Expired - Fee Related GB2205408B (en) 1987-06-01 1987-12-15 Search coil assembly for metal detectors and method for making same
GB8729174A Expired - Fee Related GB2205409B (en) 1987-06-01 1987-12-15 Search coil assembly for metal detectors and method for making same

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB8729173A Expired - Fee Related GB2205408B (en) 1987-06-01 1987-12-15 Search coil assembly for metal detectors and method for making same

Country Status (1)

Country Link
GB (2) GB2205408B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232254A (en) * 1989-05-30 1990-12-05 Barkley & Dexter Lab Inc Search coil assembly for metal detectors and method for making such an assembly
DE3920081A1 (en) * 1989-06-20 1991-01-03 Foerster Inst Dr Friedrich SEARCH COIL ARRANGEMENT
GB2253057A (en) * 1990-09-11 1992-08-26 Barkley & Dexter Lab Inc Search coil assembly with low resistance coils and method for making same
US5307042A (en) * 1992-02-19 1994-04-26 B&D Liquidation Corp. Search coil frame assembly for metal and method for making same
DE10011500A1 (en) * 2000-03-09 2001-09-13 Abb Research Ltd Winding for system for generating magnetic field, has several individual winding section areas of predetermined length and width, electrically interconnected, enclosing defined shape space
GB2545710B (en) * 2015-12-23 2020-09-23 Illinois Tool Works Metal detector

Also Published As

Publication number Publication date
GB2205408A (en) 1988-12-07
GB2205408B (en) 1991-02-13
GB8729173D0 (en) 1988-01-27
GB2205409B (en) 1991-02-13
GB2205409A (en) 1988-12-07

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Legal Events

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

Effective date: 19921215