FR2054591A1 - - Google Patents

Info

Publication number
FR2054591A1
FR2054591A1 FR7023730A FR7023730A FR2054591A1 FR 2054591 A1 FR2054591 A1 FR 2054591A1 FR 7023730 A FR7023730 A FR 7023730A FR 7023730 A FR7023730 A FR 7023730A FR 2054591 A1 FR2054591 A1 FR 2054591A1
Authority
FR
France
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.)
Pending
Application number
FR7023730A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2054591A1 publication Critical patent/FR2054591A1/fr
Pending legal-status Critical Current

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
FR7023730A 1969-06-26 1970-06-26 Pending FR2054591A1 (fr)

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
FR2054591A1 true FR2054591A1 (fr) 1971-04-23

Family

ID=27542766

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7023730A Pending FR2054591A1 (fr) 1969-06-26 1970-06-26

Country Status (5)

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

Cited By (3)

* 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
FR2473764A1 (fr) * 1980-01-15 1981-07-17 Matsushita Electric Works Ltd Systeme avertisseur d'intrusion
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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220444A (en) * 1988-07-06 1990-01-10 Paul Francis Creer Revolving security door
WO2002029744A1 (fr) * 2000-10-04 2002-04-11 Adt Security Services, Inc. Systeme de commande d'entree/sortie pour halls d'aeroport et autres zones a acces controle

Cited By (3)

* 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
FR2473764A1 (fr) * 1980-01-15 1981-07-17 Matsushita Electric Works Ltd Systeme avertisseur d'intrusion
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

Also Published As

Publication number Publication date
DE2031523B2 (fr) 1975-04-30
DE2031523A1 (de) 1971-02-25
GB1320153A (en) 1973-06-13
DE2031523C3 (de) 1976-01-08
IL34799A (en) 1973-01-30
SE361949B (fr) 1973-11-19

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Legal Events

Date Code Title Description
AR Application made for restoration
JD Different final judgements