Patent US3403329A successfully refreshed from Google Patents.
US3403329A
Expired / Lapsed
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Flux-gate magnetometer with magnetic amplifier
Assignee: United States Department of the Navy
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Filing: 1963-11-29
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Granted: 1968-09-24
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Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 William A Geyger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:55
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/04; G01R33/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A FLUX-GATE MAGNETOMETER: (A) A SATURABLE CORE OPERATED IN MAGNETIC SATURATION HAVING (1) MEANS FOR GENERATING A D.C. VOLTAGE OUTPUT PROPORTIONAL TO DETECTED D.C. MAGNETIC FIELD WHEN SIMULTANEOUSLY ENERGIZED BY BOTH SAID D.C. MAGNETIC FIELD AND AN A.C. MAGNETIC FIELD, (2) FIRST MEANS FOR SIMULTANEOUSLY GENERATING AN A.C. MAGNETIC FIELD AND CONTROLLING THE SWITCHING RATE OF A D.C. POWER SOURCE, (B) A POLARITY REVERSIBLE POWER SOURCE HAVING (1) A SOURCE OF D.C. POWER, (2) AND SWITCHING MEANS CONNECTING BETWEEN SAID D.C. SOURCE OF POWER AND SAID FIRST MEANS FOR ALTERNATELY SWITCHING THE POLARITY OF D.C. POWER SUPPLIED TO SAID FIRST MEANS,
Claim 2
Dependent Claim
102 words
IN A FLUX-GATE MAGNETOMETER: (A) A SATURABLE CORE OPERATED IN MAGNETIC SATURATION HAVING (1) MEANS FOR GENERATING A D.C. VOLTAGE OUTPUT PROPORTIONAL TO DETECTED D.C. MAGNETIC FIELD WHEN SIMULTANEOUSLY ENERGIZED BY BOTH SAID D.C. MAGNETIC FIELD AND AN A.C. MAGNETIC FIELD, (2) FIRST MEANS FOR SIMULTANEOUSLY GENERATING AN A.C. MAGNETIC FIELD AND CONTROLLING THE SWITCHING RATE OF A D.C. POWER SOURCE, (B) A POLARITY REVERSIBLE POWER SOURCE HAVING (1) A SOURCE OF D.C. POWER, (2) AND SWITCHING MEANS CONNECTING BETWEEN SAID D.C. SOURCE OF POWER AND SAID FIRST MEANS FOR ALTERNATELY SWITCHING THE POLARITY OF D.C. POWER SUPPLIED TO SAID FIRST MEANS,
References Cited (Backward Citations)
US3040248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |