FR2459474A1 - Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications - Google Patents
Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications Download PDFInfo
- Publication number
- FR2459474A1 FR2459474A1 FR7916813A FR7916813A FR2459474A1 FR 2459474 A1 FR2459474 A1 FR 2459474A1 FR 7916813 A FR7916813 A FR 7916813A FR 7916813 A FR7916813 A FR 7916813A FR 2459474 A1 FR2459474 A1 FR 2459474A1
- Authority
- FR
- France
- Prior art keywords
- balancing
- animals
- wood
- oscillator
- metal
- 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
Links
- 239000002184 metal Substances 0.000 title abstract description 8
- 229910052751 metal Inorganic materials 0.000 title abstract description 8
- 241001465754 Metazoa Species 0.000 title abstract description 3
- 239000002023 wood Substances 0.000 title description 3
- 230000006698 induction Effects 0.000 claims description 10
- 238000001356 surgical procedure Methods 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 claims 2
- 230000008447 perception Effects 0.000 claims 1
- 230000001939 inductive effect Effects 0.000 abstract 1
- 230000002277 temperature effect Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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
- G01V3/107—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 using compensating coil or loop arrangements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Measurement Of Current Or Voltage (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7916813A FR2459474A1 (fr) | 1979-06-19 | 1979-06-19 | Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7916813A FR2459474A1 (fr) | 1979-06-19 | 1979-06-19 | Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2459474A1 true FR2459474A1 (fr) | 1981-01-09 |
| FR2459474B1 FR2459474B1 (enExample) | 1984-06-01 |
Family
ID=9227262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7916813A Granted FR2459474A1 (fr) | 1979-06-19 | 1979-06-19 | Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2459474A1 (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2505167A1 (fr) * | 1981-05-07 | 1982-11-12 | Mac Cormick Lab Inc | Circuit et procede de determination de la position d'un dispositif dans un tissu biologique |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2575447A (en) * | 1947-10-04 | 1951-11-20 | Rca Corp | Fail-safe feature for balanced bridge indicators |
| US2711510A (en) * | 1950-06-21 | 1955-06-21 | Rca Corp | Metal detector balance controls |
| US3758849A (en) * | 1972-03-31 | 1973-09-11 | Sperry Rand Corp | Metal detector system having identical balanced field coil system on opposite sides of a detection zone |
-
1979
- 1979-06-19 FR FR7916813A patent/FR2459474A1/fr active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2575447A (en) * | 1947-10-04 | 1951-11-20 | Rca Corp | Fail-safe feature for balanced bridge indicators |
| US2711510A (en) * | 1950-06-21 | 1955-06-21 | Rca Corp | Metal detector balance controls |
| US3758849A (en) * | 1972-03-31 | 1973-09-11 | Sperry Rand Corp | Metal detector system having identical balanced field coil system on opposite sides of a detection zone |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2505167A1 (fr) * | 1981-05-07 | 1982-11-12 | Mac Cormick Lab Inc | Circuit et procede de determination de la position d'un dispositif dans un tissu biologique |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2459474B1 (enExample) | 1984-06-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TP | Transmission of property | ||
| ST | Notification of lapse |