SE361949B - - Google Patents

Info

Publication number
SE361949B
SE361949B SE880170A SE880170A SE361949B SE 361949 B SE361949 B SE 361949B SE 880170 A SE880170 A SE 880170A SE 880170 A SE880170 A SE 880170A SE 361949 B SE361949 B SE 361949B
Authority
SE
Sweden
Application number
SE880170A
Inventor
Y Brown
Original Assignee
Y Brown
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 Y Brown filed Critical Y Brown
Publication of SE361949B publication Critical patent/SE361949B/xx

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • 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
SE880170A 1969-06-26 1970-06-25 SE361949B (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
AU5707769 1969-06-26
AU5707869 1969-06-26
AU5780069 1969-07-11
AU5912369 1969-08-06
AU6556369 1969-12-22
AUPA005870 1970-01-12

Publications (1)

Publication Number Publication Date
SE361949B true SE361949B (de) 1973-11-19

Family

ID=27542766

Family Applications (1)

Application Number Title Priority Date Filing Date
SE880170A SE361949B (de) 1969-06-26 1970-06-25

Country Status (5)

Country Link
DE (1) DE2031523C3 (de)
FR (1) FR2054591A1 (de)
GB (1) GB1320153A (de)
IL (1) IL34799A (de)
SE (1) SE361949B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2314509A1 (fr) * 1975-06-11 1977-01-07 Dumesnil Gerard Procede et dispositif pour la detection de corps ferromagnetiques a fort champ coercitif notamment pour controler les acces aux lieux publics
DE3100936C2 (de) * 1980-01-15 1985-10-31 Matsushita Electric Works, Ltd., Kadoma, Osaka Eindringlingwarnanlage
FR2510764A1 (fr) * 1981-07-30 1983-02-04 Franquet Leon Dispositif de detection d'objets metalliques, tels que des armes a feu, et sas d'acces de locaux equipes de tels dispositifs
GB2220444A (en) * 1988-07-06 1990-01-10 Paul Francis Creer Revolving security door
AU2001220416A1 (en) * 2000-10-04 2002-04-15 Adt Security Services, Inc. Ingress/egress control system for airport concourses and other access controlledareas

Also Published As

Publication number Publication date
DE2031523C3 (de) 1976-01-08
GB1320153A (en) 1973-06-13
DE2031523B2 (de) 1975-04-30
DE2031523A1 (de) 1971-02-25
FR2054591A1 (de) 1971-04-23
IL34799A (en) 1973-01-30

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