BE809070Q - IMPROVEMENTS IN ELECTROMAGNETIC DEVICES SUITABLE FOR DETECTION OF METAL OBJECTS - Google Patents
IMPROVEMENTS IN ELECTROMAGNETIC DEVICES SUITABLE FOR DETECTION OF METAL OBJECTSInfo
- Publication number
- BE809070Q BE809070Q BE6044401A BE6044401A BE809070Q BE 809070 Q BE809070 Q BE 809070Q BE 6044401 A BE6044401 A BE 6044401A BE 6044401 A BE6044401 A BE 6044401A BE 809070 Q BE809070 Q BE 809070Q
- Authority
- BE
- Belgium
- Prior art keywords
- detection
- devices suitable
- metal objects
- electromagnetic devices
- electromagnetic
- Prior art date
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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7001481A FR2076468A5 (en) | 1970-01-14 | 1970-01-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE809070Q true BE809070Q (en) | 1974-04-16 |
Family
ID=9049109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE6044401A BE809070Q (en) | 1970-01-14 | 1973-12-21 | IMPROVEMENTS IN ELECTROMAGNETIC DEVICES SUITABLE FOR DETECTION OF METAL OBJECTS |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE809070Q (en) |
FR (1) | FR2076468A5 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4135184A (en) * | 1977-08-31 | 1979-01-16 | Knogo Corporation | Electronic theft detection system for monitoring wide passageways |
ZA889254B (en) * | 1987-12-10 | 1990-08-29 | Uniscan Ltd | Powering and communication apparatus and method(s) |
AU2002365033A1 (en) | 2001-10-25 | 2003-06-17 | The Johns Hopkins University | Wide area metal detection (wamd) system and method for security screening crowds |
WO2008028487A1 (en) * | 2006-09-07 | 2008-03-13 | Alert Metalguard Aps | A system and a method for electronically monitoring goods |
-
1970
- 1970-01-14 FR FR7001481A patent/FR2076468A5/fr not_active Expired
-
1973
- 1973-12-21 BE BE6044401A patent/BE809070Q/en active
Also Published As
Publication number | Publication date |
---|---|
FR2076468A5 (en) | 1971-10-15 |
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