Patent US4292590A successfully refreshed from Google Patents.
US4292590A
Expired / Lapsed
US
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Magnetometer apparatus with detector immobilized in wax
Assignee: HOPE INDUSTRIES Inc A CORP OF PENNSYLVANIA
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Filing: 1979-11-13
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Granted: 1981-09-29
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Expires: 1999-11-13
Abstract
Abstract A magnetometer assembly wherein a magnetometer detector suspended from a gimbal is immersed in a wax so as to immobilize the detector. Desired gimbal operation is achieved by heating the wax in the vicinity of the detector.
Inventors
- 👤 James H. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:34
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/04; G01R33/045; G12; G12B; G12B5/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
104 words
A magnetometer assembly comprising: (a) a housing; (b) a magnetometer detector disposed within said housing to sense external magnetic disturbances; (c) support means for supporting said detector and being of the type which allows said detector to swing freely so as to assume a vertical orientation; (d) said detector being suspended in a material which is a solid at the normal operating temperature of said detector so as to prevent swinging movement of said detector but is a liquid at a relatively higher temperature so as to allow swinging movement of said detector; and (e) means for heating said material to said higher temperature.
Claim 2
Dependent Claim
104 words
A magnetometer assembly comprising: (a) a housing; (b) a magnetometer detector disposed within said housing to sense external magnetic disturbances; (c) support means for supporting said detector and being of the type which allows said detector to swing freely so as to assume a vertical orientation; (d) said detector being suspended in a material which is a solid at the normal operating temperature of said detector so as to prevent swinging movement of said detector but is a liquid at a relatively higher temperature so as to allow swinging movement of said detector; and (e) means for heating said material to said higher temperature.
Claim 3
Dependent Claim
32 words
Apparatus according to claim 1 wherein: (a) said support means is a gimbal which allows rotation of said detector about two mutually perpendicular axes; and wherein, (b) said material covers said gimbal.
Claim 4
Dependent Claim
12 words
Apparatus according to claim 1 wherein: (a) said material is a wax.
Claim 5
Dependent Claim
47 words
Apparatus according to claim 1 wherein: (a) said detector includes an electrical coil normally used for nulling the effects of the earth's magnetism; and which includes; (b) means for supplying said coil with electrical energy to generate heat of sufficient values so as to liquify said material.
Claim 6
Dependent Claim
19 words
Apparatus according to claim 1 wherein: (a) said means for heating includes a heating coil disposed within said housing.
Claim 7
Dependent Claim
14 words
Apparatus according to claim 5 wherein: (a) said coil is disposed around said detector.
Claim 8
Dependent Claim
14 words
Apparatus according to claim 6 wherein: (a) said coil is spaced from said detector.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |