US3657641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anisotropic thin film plated wire magnetometer utilizing a coil of plated wire having a plurality of turns
Assignee: Honeywell Inc
•
Filing: 1970-06-11
•
Granted: 1972-04-18
•
Expires: 1990-06-11
Abstract
Abstract A thin film plated wire magnetometer in which the plated wire configurations are arranged to provide a very sensitive and compact instrument. The device is sensitive to magnetic field variations in the order of a fraction of one gamma. A plated wire is wound a number of turns around a cylindrical or rectangular core, the plated wire acting as both sensor material and pickup coil. A high frequency energized driver coil is wound over the plated wire sensor coil, in one embodiment the driver coil is a toroidal winding.
Inventors
- 👤 Vahram S Kardashian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:49
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/04; G01R33/05
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
A plated wire type of magnetometer wherein the sensing element is of a plated wire employing a metallic core plated with a thin film of ferromagnetic material, the magnetometer comprising: sensing element means comprising a first coil of plated wire having a plurality of turns of said plated wire, said coil terminating at a first pair of terminals; means including a source of high frequency carrier energy connected to said sensing element means; said sensing element means providing an output signal which is a function of the ambient magnetic field intensity; and means including detector means connected to said sensing element means to receive said output signal and provide an indication thereof.
Claim 2
Dependent Claim
112 words
A plated wire type of magnetometer wherein the sensing element is of a plated wire employing a metallic core plated with a thin film of ferromagnetic material, the magnetometer comprising: sensing element means comprising a first coil of plated wire having a plurality of turns of said plated wire, said coil terminating at a first pair of terminals; means including a source of high frequency carrier energy connected to said sensing element means; said sensing element means providing an output signal which is a function of the ambient magnetic field intensity; and means including detector means connected to said sensing element means to receive said output signal and provide an indication thereof.
Claim 3
Dependent Claim
70 words
The magnetometer in accordance with claim 1 said sensing element means comprising: second coil means wound around said plated wire coil, said second coil means having a second pair of terminals; said source of high frequency energy being connected to one pair of said first and second pairs of terminals and said means including detector means being connected to the other pair of said first and second pairs of terminals.
Claim 4
Dependent Claim
47 words
The magnetometer of claim 2 wherein said sensing element means comprises said first coil of plated wire wound on a thin rectangular form and wherein said second coil means terminals are connected to said source of high frequency energy which comprises a sine wave source of energy.
Claim 5
Dependent Claim
35 words
The magnetometer of claim 2 wherein said sensing element means comprises said first coil of plated wire wound on a cylindrical form and wherein said second coil means is wound toroidally around said first coil.
Claim 6
Dependent Claim
29 words
The magnetometer of claim 4 wherein said source of high frequency carrier energy comprises a periodic pulse source which initiates damped high frequency oscillations in said second coil means.
Claim 7
Dependent Claim
34 words
The magnetometer in accordance with claim 1 wherein said first coil, said means including a source of high frequency energy and said means including detector means are interconnected at said first pair of terminals.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |